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NFS Client Updates for Linux 6.3

Browse Source 
New Features:
   * Convert the read and write paths to use folios
 
 Bugfixes and Cleanups:
   * Fix tracepoint state manager flag printing
   * Fix disabling swap files
   * Fix NFSv4 client identifier sysfs path in the documentation
   * Don't clear NFS_CAP_COPY if server returns NFS4ERR_OFFLOAD_DENIED
   * Treat GETDEVICEINFO errors as a layout failure
   * Replace kmap_atomic() calls with kmap_local_page()
   * Constify sunrpc sysfs kobj_type structures
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Merge tag 'nfs-for-6.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client updates from Anna Schumaker:
 "New Features:

   - Convert the read and write paths to use folios

  Bugfixes and Cleanups:

   - Fix tracepoint state manager flag printing

   - Fix disabling swap files

   - Fix NFSv4 client identifier sysfs path in the documentation

   - Don't clear NFS_CAP_COPY if server returns NFS4ERR_OFFLOAD_DENIED

   - Treat GETDEVICEINFO errors as a layout failure

   - Replace kmap_atomic() calls with kmap_local_page()

   - Constify sunrpc sysfs kobj_type structures"

* tag 'nfs-for-6.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (25 commits)
  fs/nfs: Replace kmap_atomic() with kmap_local_page() in dir.c
  pNFS/filelayout: treat GETDEVICEINFO errors as layout failure
  Documentation: Fix sysfs path for the NFSv4 client identifier
  nfs42: do not fail with EIO if ssc returns NFS4ERR_OFFLOAD_DENIED
  NFS: fix disabling of swap
  SUNRPC: make kobj_type structures constant
  nfs4trace: fix state manager flag printing
  NFS: Remove unnecessary check in nfs_read_folio()
  NFS: Improve tracing of nfs_wb_folio()
  NFS: Enable tracing of nfs_invalidate_folio() and nfs_launder_folio()
  NFS: fix up nfs_release_folio() to try to release the page
  NFS: Clean up O_DIRECT request allocation
  NFS: Fix up nfs_vm_page_mkwrite() for folios
  NFS: Convert nfs_write_begin/end to use folios
  NFS: Remove unused function nfs_wb_page()
  NFS: Convert buffered writes to use folios
  NFS: Convert the function nfs_wb_page() to use folios
  NFS: Convert buffered reads to use folios
  NFS: Add a helper nfs_wb_folio()
  NFS: Convert the remaining pagelist helper functions to support folios
  ...
This commit is contained in:
Linus Torvalds 2023-02-22 14:47:20 -08:00
commit d8ca6dbb8d
20 changed files with 698 additions and 434 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/filesystems/nfs/client-identifier.rst
View File

@ -152,7 +152,7 @@ string:
via the kernel command line, or when the "nfs" module is
loaded.
/sys/fs/nfs/client/net/identifier
/sys/fs/nfs/net/nfs_client/identifier
This virtual file, available since Linux 5.3, is local to the
network namespace in which it is accessed and so can provide
distinction between network namespaces (containers) when the
@ -164,7 +164,7 @@ then that uniquifier can be used. For example, a uniquifier might
be formed at boot using the container's internal identifier:
sha256sum /etc/machine-id | awk '{print $1}' \\
> /sys/fs/nfs/client/net/identifier
> /sys/fs/nfs/net/nfs_client/identifier
Security considerations
-----------------------

28
fs/nfs/dir.c
View File

@ -203,14 +203,14 @@ static void nfs_readdir_page_init_array(struct page *page, u64 last_cookie,
{
struct nfs_cache_array *array;
array = kmap_atomic(page);
array = kmap_local_page(page);
array->change_attr = change_attr;
array->last_cookie = last_cookie;
array->size = 0;
array->page_full = 0;
array->page_is_eof = 0;
array->cookies_are_ordered = 1;
kunmap_atomic(array);
kunmap_local(array);
}
/*
@ -221,11 +221,11 @@ static void nfs_readdir_clear_array(struct page *page)
struct nfs_cache_array *array;
unsigned int i;
array = kmap_atomic(page);
array = kmap_local_page(page);
for (i = 0; i < array->size; i++)
kfree(array->array[i].name);
array->size = 0;
kunmap_atomic(array);
kunmap_local(array);
}
static void nfs_readdir_free_folio(struct folio *folio)
@ -371,14 +371,14 @@ static pgoff_t nfs_readdir_page_cookie_hash(u64 cookie)
static bool nfs_readdir_page_validate(struct page *page, u64 last_cookie,
u64 change_attr)
{
struct nfs_cache_array *array = kmap_atomic(page);
struct nfs_cache_array *array = kmap_local_page(page);
int ret = true;
if (array->change_attr != change_attr)
ret = false;
if (nfs_readdir_array_index_cookie(array) != last_cookie)
ret = false;
kunmap_atomic(array);
kunmap_local(array);
return ret;
}
@ -418,9 +418,9 @@ static u64 nfs_readdir_page_last_cookie(struct page *page)
struct nfs_cache_array *array;
u64 ret;
array = kmap_atomic(page);
array = kmap_local_page(page);
ret = array->last_cookie;
kunmap_atomic(array);
kunmap_local(array);
return ret;
}
@ -429,9 +429,9 @@ static bool nfs_readdir_page_needs_filling(struct page *page)
struct nfs_cache_array *array;
bool ret;
array = kmap_atomic(page);
array = kmap_local_page(page);
ret = !nfs_readdir_array_is_full(array);
kunmap_atomic(array);
kunmap_local(array);
return ret;
}
@ -439,9 +439,9 @@ static void nfs_readdir_page_set_eof(struct page *page)
{
struct nfs_cache_array *array;
array = kmap_atomic(page);
array = kmap_local_page(page);
nfs_readdir_array_set_eof(array);
kunmap_atomic(array);
kunmap_local(array);
}
static struct page *nfs_readdir_page_get_next(struct address_space *mapping,
@ -568,14 +568,14 @@ static int nfs_readdir_search_array(struct nfs_readdir_descriptor *desc)
struct nfs_cache_array *array;
int status;
array = kmap_atomic(desc->page);
array = kmap_local_page(desc->page);
if (desc->dir_cookie == 0)
status = nfs_readdir_search_for_pos(array, desc);
else
status = nfs_readdir_search_for_cookie(array, desc);
kunmap_atomic(array);
kunmap_local(array);
return status;
}

12
fs/nfs/direct.c
View File

@ -343,14 +343,12 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
struct nfs_page *req;
unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase);
/* XXX do we need to do the eof zeroing found in async_filler? */
req = nfs_create_request(dreq->ctx, pagevec[i],
pgbase, req_len);
req = nfs_page_create_from_page(dreq->ctx, pagevec[i],
pgbase, pos, req_len);
if (IS_ERR(req)) {
result = PTR_ERR(req);
break;
}
req->wb_index = pos >> PAGE_SHIFT;
req->wb_offset = pos & ~PAGE_MASK;
if (!nfs_pageio_add_request(&desc, req)) {
result = desc.pg_error;
nfs_release_request(req);
@ -802,8 +800,8 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
struct nfs_page *req;
unsigned int req_len = min_t(size_t, bytes, PAGE_SIZE - pgbase);
req = nfs_create_request(dreq->ctx, pagevec[i],
pgbase, req_len);
req = nfs_page_create_from_page(dreq->ctx, pagevec[i],
pgbase, pos, req_len);
if (IS_ERR(req)) {
result = PTR_ERR(req);
break;
@ -816,8 +814,6 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
}
nfs_lock_request(req);
req->wb_index = pos >> PAGE_SHIFT;
req->wb_offset = pos & ~PAGE_MASK;
if (!nfs_pageio_add_request(&desc, req)) {
result = desc.pg_error;
nfs_unlock_and_release_request(req);

124
fs/nfs/file.c
View File

@ -277,27 +277,28 @@ EXPORT_SYMBOL_GPL(nfs_file_fsync);
* and that the new data won't completely replace the old data in
* that range of the file.
*/
static bool nfs_full_page_write(struct page *page, loff_t pos, unsigned int len)
static bool nfs_folio_is_full_write(struct folio *folio, loff_t pos,
unsigned int len)
{
unsigned int pglen = nfs_page_length(page);
unsigned int offset = pos & (PAGE_SIZE - 1);
unsigned int pglen = nfs_folio_length(folio);
unsigned int offset = offset_in_folio(folio, pos);
unsigned int end = offset + len;
return !pglen || (end >= pglen && !offset);
}
static bool nfs_want_read_modify_write(struct file *file, struct page *page,
loff_t pos, unsigned int len)
static bool nfs_want_read_modify_write(struct file *file, struct folio *folio,
loff_t pos, unsigned int len)
{
/*
* Up-to-date pages, those with ongoing or full-page write
* don't need read/modify/write
*/
if (PageUptodate(page) || PagePrivate(page) ||
nfs_full_page_write(page, pos, len))
if (folio_test_uptodate(folio) || folio_test_private(folio) ||
nfs_folio_is_full_write(folio, pos, len))
return false;
if (pnfs_ld_read_whole_page(file->f_mapping->host))
if (pnfs_ld_read_whole_page(file_inode(file)))
return true;
/* Open for reading too? */
if (file->f_mode & FMODE_READ)
@ -305,6 +306,15 @@ static bool nfs_want_read_modify_write(struct file *file, struct page *page,
return false;
}
static struct folio *
nfs_folio_grab_cache_write_begin(struct address_space *mapping, pgoff_t index)
{
unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
return __filemap_get_folio(mapping, index, fgp_flags,
mapping_gfp_mask(mapping));
}
/*
* This does the "real" work of the write. We must allocate and lock the
* page to be sent back to the generic routine, which then copies the
@ -314,32 +324,31 @@ static bool nfs_want_read_modify_write(struct file *file, struct page *page,
* increment the page use counts until he is done with the page.
*/
static int nfs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len,
struct page **pagep, void **fsdata)
loff_t pos, unsigned len, struct page **pagep,
void **fsdata)
{
int ret;
pgoff_t index = pos >> PAGE_SHIFT;
struct page *page;
struct folio *folio;
int once_thru = 0;
int ret;
dfprintk(PAGECACHE, "NFS: write_begin(%pD2(%lu), %u@%lld)\n",
file, mapping->host->i_ino, len, (long long) pos);
start:
page = grab_cache_page_write_begin(mapping, index);
if (!page)
folio = nfs_folio_grab_cache_write_begin(mapping, pos >> PAGE_SHIFT);
if (!folio)
return -ENOMEM;
*pagep = page;
*pagep = &folio->page;
ret = nfs_flush_incompatible(file, page);
ret = nfs_flush_incompatible(file, folio);
if (ret) {
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
} else if (!once_thru &&
nfs_want_read_modify_write(file, page, pos, len)) {
nfs_want_read_modify_write(file, folio, pos, len)) {
once_thru = 1;
ret = nfs_read_folio(file, page_folio(page));
put_page(page);
ret = nfs_read_folio(file, folio);
folio_put(folio);
if (!ret)
goto start;
}
@ -347,11 +356,12 @@ static int nfs_write_begin(struct file *file, struct address_space *mapping,
}
static int nfs_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
unsigned offset = pos & (PAGE_SIZE - 1);
struct nfs_open_context *ctx = nfs_file_open_context(file);
struct folio *folio = page_folio(page);
unsigned offset = offset_in_folio(folio, pos);
int status;
dfprintk(PAGECACHE, "NFS: write_end(%pD2(%lu), %u@%lld)\n",
@ -361,26 +371,26 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
* Zero any uninitialised parts of the page, and then mark the page
* as up to date if it turns out that we're extending the file.
*/
if (!PageUptodate(page)) {
unsigned pglen = nfs_page_length(page);
if (!folio_test_uptodate(folio)) {
size_t fsize = folio_size(folio);
unsigned pglen = nfs_folio_length(folio);
unsigned end = offset + copied;
if (pglen == 0) {
zero_user_segments(page, 0, offset,
end, PAGE_SIZE);
SetPageUptodate(page);
folio_zero_segments(folio, 0, offset, end, fsize);
folio_mark_uptodate(folio);
} else if (end >= pglen) {
zero_user_segment(page, end, PAGE_SIZE);
folio_zero_segment(folio, end, fsize);
if (offset == 0)
SetPageUptodate(page);
folio_mark_uptodate(folio);
} else
zero_user_segment(page, pglen, PAGE_SIZE);
folio_zero_segment(folio, pglen, fsize);
}
status = nfs_updatepage(file, page, offset, copied);
status = nfs_update_folio(file, folio, offset, copied);
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
if (status < 0)
return status;
@ -402,14 +412,16 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
static void nfs_invalidate_folio(struct folio *folio, size_t offset,
size_t length)
{
struct inode *inode = folio_file_mapping(folio)->host;
dfprintk(PAGECACHE, "NFS: invalidate_folio(%lu, %zu, %zu)\n",
folio->index, offset, length);
if (offset != 0 || length < folio_size(folio))
return;
/* Cancel any unstarted writes on this page */
nfs_wb_folio_cancel(folio->mapping->host, folio);
nfs_wb_folio_cancel(inode, folio);
folio_wait_fscache(folio);
trace_nfs_invalidate_folio(inode, folio);
}
/*
@ -423,8 +435,13 @@ static bool nfs_release_folio(struct folio *folio, gfp_t gfp)
dfprintk(PAGECACHE, "NFS: release_folio(%p)\n", folio);
/* If the private flag is set, then the folio is not freeable */
if (folio_test_private(folio))
return false;
if (folio_test_private(folio)) {
if ((current_gfp_context(gfp) & GFP_KERNEL) != GFP_KERNEL ||
current_is_kswapd())
return false;
if (nfs_wb_folio(folio_file_mapping(folio)->host, folio) < 0)
return false;
}
return nfs_fscache_release_folio(folio, gfp);
}
@ -465,12 +482,15 @@ static void nfs_check_dirty_writeback(struct folio *folio,
static int nfs_launder_folio(struct folio *folio)
{
struct inode *inode = folio->mapping->host;
int ret;
dfprintk(PAGECACHE, "NFS: launder_folio(%ld, %llu)\n",
inode->i_ino, folio_pos(folio));
folio_wait_fscache(folio);
return nfs_wb_page(inode, &folio->page);
ret = nfs_wb_folio(inode, folio);
trace_nfs_launder_folio_done(inode, folio, ret);
return ret;
}
static int nfs_swap_activate(struct swap_info_struct *sis, struct file *file,
@ -547,22 +567,22 @@ const struct address_space_operations nfs_file_aops = {
*/
static vm_fault_t nfs_vm_page_mkwrite(struct vm_fault *vmf)
{
struct page *page = vmf->page;
struct file *filp = vmf->vma->vm_file;
struct inode *inode = file_inode(filp);
unsigned pagelen;
vm_fault_t ret = VM_FAULT_NOPAGE;
struct address_space *mapping;
struct folio *folio = page_folio(vmf->page);
dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%pD2(%lu), offset %lld)\n",
filp, filp->f_mapping->host->i_ino,
(long long)page_offset(page));
filp, filp->f_mapping->host->i_ino,
(long long)folio_file_pos(folio));
sb_start_pagefault(inode->i_sb);
/* make sure the cache has finished storing the page */
if (PageFsCache(page) &&
wait_on_page_fscache_killable(vmf->page) < 0) {
if (folio_test_fscache(folio) &&
folio_wait_fscache_killable(folio) < 0) {
ret = VM_FAULT_RETRY;
goto out;
}
@ -571,25 +591,25 @@ static vm_fault_t nfs_vm_page_mkwrite(struct vm_fault *vmf)
nfs_wait_bit_killable,
TASK_KILLABLE|TASK_FREEZABLE_UNSAFE);
lock_page(page);
mapping = page_file_mapping(page);
folio_lock(folio);
mapping = folio_file_mapping(folio);
if (mapping != inode->i_mapping)
goto out_unlock;
wait_on_page_writeback(page);
folio_wait_writeback(folio);
pagelen = nfs_page_length(page);
pagelen = nfs_folio_length(folio);
if (pagelen == 0)
goto out_unlock;
ret = VM_FAULT_LOCKED;
if (nfs_flush_incompatible(filp, page) == 0 &&
nfs_updatepage(filp, page, 0, pagelen) == 0)
if (nfs_flush_incompatible(filp, folio) == 0 &&
nfs_update_folio(filp, folio, 0, pagelen) == 0)
goto out;
ret = VM_FAULT_SIGBUS;
out_unlock:
unlock_page(page);
folio_unlock(folio);
out:
sb_end_pagefault(inode->i_sb);
return ret;

2
fs/nfs/filelayout/filelayout.c
View File

@ -862,6 +862,8 @@ fl_pnfs_update_layout(struct inode *ino,
status = filelayout_check_deviceid(lo, fl, gfp_flags);
if (status) {
pnfs_error_mark_layout_for_return(ino, lseg);
pnfs_set_lo_fail(lseg);
pnfs_put_lseg(lseg);
lseg = NULL;
}

38
fs/nfs/internal.h
View File

@ -760,17 +760,18 @@ void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize)
* Record the page as unstable (an extra writeback period) and mark its
* inode as dirty.
*/
static inline
void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo)
static inline void nfs_folio_mark_unstable(struct folio *folio,
struct nfs_commit_info *cinfo)
{
if (!cinfo->dreq) {
struct inode *inode = page_file_mapping(page)->host;
if (folio && !cinfo->dreq) {
struct inode *inode = folio_file_mapping(folio)->host;
long nr = folio_nr_pages(folio);
/* This page is really still in write-back - just that the
* writeback is happening on the server now.
*/
inc_node_page_state(page, NR_WRITEBACK);
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
node_stat_mod_folio(folio, NR_WRITEBACK, nr);
wb_stat_mod(&inode_to_bdi(inode)->wb, WB_WRITEBACK, nr);
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
}
}
@ -794,6 +795,24 @@ unsigned int nfs_page_length(struct page *page)
return 0;
}
/*
* Determine the number of bytes of data the page contains
*/
static inline size_t nfs_folio_length(struct folio *folio)
{
loff_t i_size = i_size_read(folio_file_mapping(folio)->host);
if (i_size > 0) {
pgoff_t index = folio_index(folio) >> folio_order(folio);
pgoff_t end_index = (i_size - 1) >> folio_shift(folio);
if (index < end_index)
return folio_size(folio);
if (index == end_index)
return offset_in_folio(folio, i_size - 1) + 1;
}
return 0;
}
/*
* Convert a umode to a dirent->d_type
*/
@ -807,11 +826,10 @@ unsigned char nfs_umode_to_dtype(umode_t mode)
* Determine the number of pages in an array of length 'len' and
* with a base offset of 'base'
*/
static inline
unsigned int nfs_page_array_len(unsigned int base, size_t len)
static inline unsigned int nfs_page_array_len(unsigned int base, size_t len)
{
return ((unsigned long)len + (unsigned long)base +
PAGE_SIZE - 1) >> PAGE_SHIFT;
return ((unsigned long)len + (unsigned long)base + PAGE_SIZE - 1) >>
PAGE_SHIFT;
}
/*

3
fs/nfs/nfs42proc.c
View File

@ -460,7 +460,8 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
if (err >= 0)
break;
if (err == -ENOTSUPP &&
if ((err == -ENOTSUPP ||
err == -NFS4ERR_OFFLOAD_DENIED) &&
nfs42_files_from_same_server(src, dst)) {
err = -EOPNOTSUPP;
break;

4
fs/nfs/nfs4proc.c
View File

@ -10604,7 +10604,9 @@ static void nfs4_disable_swap(struct inode *inode)
/* The state manager thread will now exit once it is
* woken.
*/
wake_up_var(&NFS_SERVER(inode)->nfs_client->cl_state);
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
nfs4_schedule_state_manager(clp);
}
static const struct inode_operations nfs4_dir_inode_operations = {

42
fs/nfs/nfs4trace.h
View File

@ -292,32 +292,34 @@ TRACE_DEFINE_ENUM(NFS4CLNT_MOVED);
TRACE_DEFINE_ENUM(NFS4CLNT_LEASE_MOVED);
TRACE_DEFINE_ENUM(NFS4CLNT_DELEGATION_EXPIRED);
TRACE_DEFINE_ENUM(NFS4CLNT_RUN_MANAGER);
TRACE_DEFINE_ENUM(NFS4CLNT_MANAGER_AVAILABLE);
TRACE_DEFINE_ENUM(NFS4CLNT_RECALL_RUNNING);
TRACE_DEFINE_ENUM(NFS4CLNT_RECALL_ANY_LAYOUT_READ);
TRACE_DEFINE_ENUM(NFS4CLNT_RECALL_ANY_LAYOUT_RW);
TRACE_DEFINE_ENUM(NFS4CLNT_DELEGRETURN_DELAYED);
#define show_nfs4_clp_state(state) \
__print_flags(state, "|", \
{ NFS4CLNT_MANAGER_RUNNING, "MANAGER_RUNNING" }, \
{ NFS4CLNT_CHECK_LEASE, "CHECK_LEASE" }, \
{ NFS4CLNT_LEASE_EXPIRED, "LEASE_EXPIRED" }, \
{ NFS4CLNT_RECLAIM_REBOOT, "RECLAIM_REBOOT" }, \
{ NFS4CLNT_RECLAIM_NOGRACE, "RECLAIM_NOGRACE" }, \
{ NFS4CLNT_DELEGRETURN, "DELEGRETURN" }, \
{ NFS4CLNT_SESSION_RESET, "SESSION_RESET" }, \
{ NFS4CLNT_LEASE_CONFIRM, "LEASE_CONFIRM" }, \
{ NFS4CLNT_SERVER_SCOPE_MISMATCH, \
"SERVER_SCOPE_MISMATCH" }, \
{ NFS4CLNT_PURGE_STATE, "PURGE_STATE" }, \
{ NFS4CLNT_BIND_CONN_TO_SESSION, \
"BIND_CONN_TO_SESSION" }, \
{ NFS4CLNT_MOVED, "MOVED" }, \
{ NFS4CLNT_LEASE_MOVED, "LEASE_MOVED" }, \
{ NFS4CLNT_DELEGATION_EXPIRED, "DELEGATION_EXPIRED" }, \
{ NFS4CLNT_RUN_MANAGER, "RUN_MANAGER" }, \
{ NFS4CLNT_RECALL_RUNNING, "RECALL_RUNNING" }, \
{ NFS4CLNT_RECALL_ANY_LAYOUT_READ, "RECALL_ANY_LAYOUT_READ" }, \
{ NFS4CLNT_RECALL_ANY_LAYOUT_RW, "RECALL_ANY_LAYOUT_RW" })
{ BIT(NFS4CLNT_MANAGER_RUNNING), "MANAGER_RUNNING" }, \
{ BIT(NFS4CLNT_CHECK_LEASE), "CHECK_LEASE" }, \
{ BIT(NFS4CLNT_LEASE_EXPIRED), "LEASE_EXPIRED" }, \
{ BIT(NFS4CLNT_RECLAIM_REBOOT), "RECLAIM_REBOOT" }, \
{ BIT(NFS4CLNT_RECLAIM_NOGRACE), "RECLAIM_NOGRACE" }, \
{ BIT(NFS4CLNT_DELEGRETURN), "DELEGRETURN" }, \
{ BIT(NFS4CLNT_SESSION_RESET), "SESSION_RESET" }, \
{ BIT(NFS4CLNT_LEASE_CONFIRM), "LEASE_CONFIRM" }, \
{ BIT(NFS4CLNT_SERVER_SCOPE_MISMATCH), "SERVER_SCOPE_MISMATCH" }, \
{ BIT(NFS4CLNT_PURGE_STATE), "PURGE_STATE" }, \
{ BIT(NFS4CLNT_BIND_CONN_TO_SESSION), "BIND_CONN_TO_SESSION" }, \
{ BIT(NFS4CLNT_MOVED), "MOVED" }, \
{ BIT(NFS4CLNT_LEASE_MOVED), "LEASE_MOVED" }, \
{ BIT(NFS4CLNT_DELEGATION_EXPIRED), "DELEGATION_EXPIRED" }, \
{ BIT(NFS4CLNT_RUN_MANAGER), "RUN_MANAGER" }, \
{ BIT(NFS4CLNT_MANAGER_AVAILABLE), "MANAGER_AVAILABLE" }, \
{ BIT(NFS4CLNT_RECALL_RUNNING), "RECALL_RUNNING" }, \
{ BIT(NFS4CLNT_RECALL_ANY_LAYOUT_READ), "RECALL_ANY_LAYOUT_READ" }, \
{ BIT(NFS4CLNT_RECALL_ANY_LAYOUT_RW), "RECALL_ANY_LAYOUT_RW" }, \
{ BIT(NFS4CLNT_DELEGRETURN_DELAYED), "DELERETURN_DELAYED" })
TRACE_EVENT(nfs4_state_mgr,
TP_PROTO(

58
fs/nfs/nfstrace.h
View File

@ -152,8 +152,6 @@ DEFINE_NFS_INODE_EVENT(nfs_getattr_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_getattr_exit);
DEFINE_NFS_INODE_EVENT(nfs_setattr_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_setattr_exit);
DEFINE_NFS_INODE_EVENT(nfs_writeback_page_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_writeback_page_exit);
DEFINE_NFS_INODE_EVENT(nfs_writeback_inode_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_writeback_inode_exit);
DEFINE_NFS_INODE_EVENT(nfs_fsync_enter);
@ -933,13 +931,13 @@ TRACE_EVENT(nfs_sillyrename_unlink,
)
);
TRACE_EVENT(nfs_aop_readpage,
DECLARE_EVENT_CLASS(nfs_folio_event,
TP_PROTO(
const struct inode *inode,
struct page *page
struct folio *folio
),
TP_ARGS(inode, page),
TP_ARGS(inode, folio),
TP_STRUCT__entry(
__field(dev_t, dev)
@ -947,6 +945,7 @@ TRACE_EVENT(nfs_aop_readpage,
__field(u64, fileid)
__field(u64, version)
__field(loff_t, offset)
__field(u32, count)
),
TP_fast_assign(
@ -956,26 +955,36 @@ TRACE_EVENT(nfs_aop_readpage,
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->version = inode_peek_iversion_raw(inode);
__entry->offset = page_index(page) << PAGE_SHIFT;
__entry->offset = folio_file_pos(folio);
__entry->count = nfs_folio_length(folio);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu offset=%lld",
"fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu "
"offset=%lld count=%u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle, __entry->version,
__entry->offset
__entry->offset, __entry->count
)
);
TRACE_EVENT(nfs_aop_readpage_done,
#define DEFINE_NFS_FOLIO_EVENT(name) \
DEFINE_EVENT(nfs_folio_event, name, \
TP_PROTO( \
const struct inode *inode, \
struct folio *folio \
), \
TP_ARGS(inode, folio))
DECLARE_EVENT_CLASS(nfs_folio_event_done,
TP_PROTO(
const struct inode *inode,
struct page *page,
struct folio *folio,
int ret
),
TP_ARGS(inode, page, ret),
TP_ARGS(inode, folio, ret),
TP_STRUCT__entry(
__field(dev_t, dev)
@ -984,6 +993,7 @@ TRACE_EVENT(nfs_aop_readpage_done,
__field(u64, fileid)
__field(u64, version)
__field(loff_t, offset)
__field(u32, count)
),
TP_fast_assign(
@ -993,19 +1003,39 @@ TRACE_EVENT(nfs_aop_readpage_done,
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->version = inode_peek_iversion_raw(inode);
__entry->offset = page_index(page) << PAGE_SHIFT;
__entry->offset = folio_file_pos(folio);
__entry->count = nfs_folio_length(folio);
__entry->ret = ret;
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu offset=%lld ret=%d",
"fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu "
"offset=%lld count=%u ret=%d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle, __entry->version,
__entry->offset, __entry->ret
__entry->offset, __entry->count, __entry->ret
)
);
#define DEFINE_NFS_FOLIO_EVENT_DONE(name) \
DEFINE_EVENT(nfs_folio_event_done, name, \
TP_PROTO( \
const struct inode *inode, \
struct folio *folio, \
int ret \
), \
TP_ARGS(inode, folio, ret))
DEFINE_NFS_FOLIO_EVENT(nfs_aop_readpage);
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_aop_readpage_done);
DEFINE_NFS_FOLIO_EVENT(nfs_writeback_folio);
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_writeback_folio_done);
DEFINE_NFS_FOLIO_EVENT(nfs_invalidate_folio);
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_launder_folio_done);
TRACE_EVENT(nfs_aop_readahead,
TP_PROTO(
const struct inode *inode,

217
fs/nfs/pagelist.c
View File

@ -32,6 +32,42 @@
static struct kmem_cache *nfs_page_cachep;
static const struct rpc_call_ops nfs_pgio_common_ops;
struct nfs_page_iter_page {
const struct nfs_page *req;
size_t count;
};
static void nfs_page_iter_page_init(struct nfs_page_iter_page *i,
const struct nfs_page *req)
{
i->req = req;
i->count = 0;
}
static void nfs_page_iter_page_advance(struct nfs_page_iter_page *i, size_t sz)
{
const struct nfs_page *req = i->req;
size_t tmp = i->count + sz;
i->count = (tmp < req->wb_bytes) ? tmp : req->wb_bytes;
}
static struct page *nfs_page_iter_page_get(struct nfs_page_iter_page *i)
{
const struct nfs_page *req = i->req;
struct page *page;
if (i->count != req->wb_bytes) {
size_t base = i->count + req->wb_pgbase;
size_t len = PAGE_SIZE - offset_in_page(base);
page = nfs_page_to_page(req, base);
nfs_page_iter_page_advance(i, len);
return page;
}
return NULL;
}
static struct nfs_pgio_mirror *
nfs_pgio_get_mirror(struct nfs_pageio_descriptor *desc, u32 idx)
{
@ -391,7 +427,7 @@ nfs_page_group_init(struct nfs_page *req, struct nfs_page *prev)
* has extra ref from the write/commit path to handle handoff
* between write and commit lists. */
if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) {
inode = page_file_mapping(req->wb_page)->host;
inode = nfs_page_to_inode(req);
set_bit(PG_INODE_REF, &req->wb_flags);
kref_get(&req->wb_kref);
atomic_long_inc(&NFS_I(inode)->nrequests);
@ -431,10 +467,9 @@ nfs_page_group_destroy(struct kref *kref)
nfs_release_request(head);
}
static struct nfs_page *
__nfs_create_request(struct nfs_lock_context *l_ctx, struct page *page,
unsigned int pgbase, unsigned int offset,
unsigned int count)
static struct nfs_page *nfs_page_create(struct nfs_lock_context *l_ctx,
unsigned int pgbase, pgoff_t index,
unsigned int offset, unsigned int count)
{
struct nfs_page *req;
struct nfs_open_context *ctx = l_ctx->open_context;
@ -453,42 +488,90 @@ __nfs_create_request(struct nfs_lock_context *l_ctx, struct page *page,
/* Initialize the request struct. Initially, we assume a
* long write-back delay. This will be adjusted in
* update_nfs_request below if the region is not locked. */
req->wb_page = page;
if (page) {
req->wb_index = page_index(page);
get_page(page);
}
req->wb_offset = offset;
req->wb_pgbase = pgbase;
req->wb_bytes = count;
req->wb_pgbase = pgbase;
req->wb_index = index;
req->wb_offset = offset;
req->wb_bytes = count;
kref_init(&req->wb_kref);
req->wb_nio = 0;
return req;
}
static void nfs_page_assign_folio(struct nfs_page *req, struct folio *folio)
{
if (folio != NULL) {
req->wb_folio = folio;
folio_get(folio);
set_bit(PG_FOLIO, &req->wb_flags);
}
}
static void nfs_page_assign_page(struct nfs_page *req, struct page *page)
{
if (page != NULL) {
req->wb_page = page;
get_page(page);
}
}
/**
* nfs_create_request - Create an NFS read/write request.
* nfs_page_create_from_page - Create an NFS read/write request.
* @ctx: open context to use
* @page: page to write
* @offset: starting offset within the page for the write
* @pgbase: starting offset within the page for the write
* @offset: file offset for the write
* @count: number of bytes to read/write
*
* The page must be locked by the caller. This makes sure we never
* create two different requests for the same page.
* User should ensure it is safe to sleep in this function.
*/
struct nfs_page *
nfs_create_request(struct nfs_open_context *ctx, struct page *page,
unsigned int offset, unsigned int count)
struct nfs_page *nfs_page_create_from_page(struct nfs_open_context *ctx,
struct page *page,
unsigned int pgbase, loff_t offset,
unsigned int count)
{
struct nfs_lock_context *l_ctx = nfs_get_lock_context(ctx);
struct nfs_page *ret;
if (IS_ERR(l_ctx))
return ERR_CAST(l_ctx);
ret = __nfs_create_request(l_ctx, page, offset, offset, count);
if (!IS_ERR(ret))
ret = nfs_page_create(l_ctx, pgbase, offset >> PAGE_SHIFT,
offset_in_page(offset), count);
if (!IS_ERR(ret)) {
nfs_page_assign_page(ret, page);
nfs_page_group_init(ret, NULL);
}
nfs_put_lock_context(l_ctx);
return ret;
}
/**
* nfs_page_create_from_folio - Create an NFS read/write request.
* @ctx: open context to use
* @folio: folio to write
* @offset: starting offset within the folio for the write
* @count: number of bytes to read/write
*
* The page must be locked by the caller. This makes sure we never
* create two different requests for the same page.
* User should ensure it is safe to sleep in this function.
*/
struct nfs_page *nfs_page_create_from_folio(struct nfs_open_context *ctx,
struct folio *folio,
unsigned int offset,
unsigned int count)
{
struct nfs_lock_context *l_ctx = nfs_get_lock_context(ctx);
struct nfs_page *ret;
if (IS_ERR(l_ctx))
return ERR_CAST(l_ctx);
ret = nfs_page_create(l_ctx, offset, folio_index(folio), offset, count);
if (!IS_ERR(ret)) {
nfs_page_assign_folio(ret, folio);
nfs_page_group_init(ret, NULL);
}
nfs_put_lock_context(l_ctx);
return ret;
}
@ -501,10 +584,16 @@ nfs_create_subreq(struct nfs_page *req,
{
struct nfs_page *last;
struct nfs_page *ret;
struct folio *folio = nfs_page_to_folio(req);
struct page *page = nfs_page_to_page(req, pgbase);
ret = __nfs_create_request(req->wb_lock_context, req->wb_page,
pgbase, offset, count);
ret = nfs_page_create(req->wb_lock_context, pgbase, req->wb_index,
offset, count);
if (!IS_ERR(ret)) {
if (folio)
nfs_page_assign_folio(ret, folio);
else
nfs_page_assign_page(ret, page);
/* find the last request */
for (last = req->wb_head;
last->wb_this_page != req->wb_head;
@ -512,7 +601,6 @@ nfs_create_subreq(struct nfs_page *req,
;
nfs_lock_request(ret);
ret->wb_index = req->wb_index;
nfs_page_group_init(ret, last);
ret->wb_nio = req->wb_nio;
}
@ -551,11 +639,16 @@ void nfs_unlock_and_release_request(struct nfs_page *req)
*/
static void nfs_clear_request(struct nfs_page *req)
{
struct folio *folio = nfs_page_to_folio(req);
struct page *page = req->wb_page;
struct nfs_lock_context *l_ctx = req->wb_lock_context;
struct nfs_open_context *ctx;
if (page != NULL) {
if (folio != NULL) {
folio_put(folio);
req->wb_folio = NULL;
clear_bit(PG_FOLIO, &req->wb_flags);
} else if (page != NULL) {
put_page(page);
req->wb_page = NULL;
}
@ -693,13 +786,14 @@ EXPORT_SYMBOL_GPL(nfs_pgio_header_free);
/**
* nfs_pgio_rpcsetup - Set up arguments for a pageio call
* @hdr: The pageio hdr
* @pgbase: base
* @count: Number of bytes to read
* @how: How to commit data (writes only)
* @cinfo: Commit information for the call (writes only)
*/
static void nfs_pgio_rpcsetup(struct nfs_pgio_header *hdr,
unsigned int count,
int how, struct nfs_commit_info *cinfo)
static void nfs_pgio_rpcsetup(struct nfs_pgio_header *hdr, unsigned int pgbase,
unsigned int count, int how,
struct nfs_commit_info *cinfo)
{
struct nfs_page *req = hdr->req;
@ -710,7 +804,7 @@ static void nfs_pgio_rpcsetup(struct nfs_pgio_header *hdr,
hdr->args.offset = req_offset(req);
/* pnfs_set_layoutcommit needs this */
hdr->mds_offset = hdr->args.offset;
hdr->args.pgbase = req->wb_pgbase;
hdr->args.pgbase = pgbase;
hdr->args.pages = hdr->page_array.pagevec;
hdr->args.count = count;
hdr->args.context = get_nfs_open_context(nfs_req_openctx(req));
@ -896,9 +990,10 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc,
struct nfs_commit_info cinfo;
struct nfs_page_array *pg_array = &hdr->page_array;
unsigned int pagecount, pageused;
unsigned int pg_base = offset_in_page(mirror->pg_base);
gfp_t gfp_flags = nfs_io_gfp_mask();
pagecount = nfs_page_array_len(mirror->pg_base, mirror->pg_count);
pagecount = nfs_page_array_len(pg_base, mirror->pg_count);
pg_array->npages = pagecount;
if (pagecount <= ARRAY_SIZE(pg_array->page_array))
@ -918,16 +1013,26 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc,
last_page = NULL;
pageused = 0;
while (!list_empty(head)) {
struct nfs_page_iter_page i;
struct page *page;
req = nfs_list_entry(head->next);
nfs_list_move_request(req, &hdr->pages);
if (!last_page || last_page != req->wb_page) {
pageused++;
if (pageused > pagecount)
break;
*pages++ = last_page = req->wb_page;
if (req->wb_pgbase == 0)
last_page = NULL;
nfs_page_iter_page_init(&i, req);
while ((page = nfs_page_iter_page_get(&i)) != NULL) {
if (last_page != page) {
pageused++;
if (pageused > pagecount)
goto full;
*pages++ = last_page = page;
}
}
}
full:
if (WARN_ON_ONCE(pageused != pagecount)) {
nfs_pgio_error(hdr);
desc->pg_error = -EINVAL;
@ -939,7 +1044,8 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc,
desc->pg_ioflags &= ~FLUSH_COND_STABLE;
/* Set up the argument struct */
nfs_pgio_rpcsetup(hdr, mirror->pg_count, desc->pg_ioflags, &cinfo);
nfs_pgio_rpcsetup(hdr, pg_base, mirror->pg_count, desc->pg_ioflags,
&cinfo);
desc->pg_rpc_callops = &nfs_pgio_common_ops;
return 0;
}
@ -1035,6 +1141,24 @@ static bool nfs_match_lock_context(const struct nfs_lock_context *l1,
return l1->lockowner == l2->lockowner;
}
static bool nfs_page_is_contiguous(const struct nfs_page *prev,
const struct nfs_page *req)
{
size_t prev_end = prev->wb_pgbase + prev->wb_bytes;
if (req_offset(req) != req_offset(prev) + prev->wb_bytes)
return false;
if (req->wb_pgbase == 0)
return prev_end == nfs_page_max_length(prev);
if (req->wb_pgbase == prev_end) {
struct folio *folio = nfs_page_to_folio(req);
if (folio)
return folio == nfs_page_to_folio(prev);
return req->wb_page == prev->wb_page;
}
return false;
}
/**
* nfs_coalesce_size - test two requests for compatibility
* @prev: pointer to nfs_page
@ -1063,16 +1187,8 @@ static unsigned int nfs_coalesce_size(struct nfs_page *prev,
!nfs_match_lock_context(req->wb_lock_context,
prev->wb_lock_context))
return 0;
if (req_offset(req) != req_offset(prev) + prev->wb_bytes)
if (!nfs_page_is_contiguous(prev, req))
return 0;
if (req->wb_page == prev->wb_page) {
if (req->wb_pgbase != prev->wb_pgbase + prev->wb_bytes)
return 0;
} else {
if (req->wb_pgbase != 0 ||
prev->wb_pgbase + prev->wb_bytes != PAGE_SIZE)
return 0;
}
}
return pgio->pg_ops->pg_test(pgio, prev, req);
}
@ -1412,16 +1528,21 @@ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index)
{
struct nfs_pgio_mirror *mirror;
struct nfs_page *prev;
struct folio *folio;
u32 midx;
for (midx = 0; midx < desc->pg_mirror_count; midx++) {
mirror = nfs_pgio_get_mirror(desc, midx);
if (!list_empty(&mirror->pg_list)) {
prev = nfs_list_entry(mirror->pg_list.prev);
if (index != prev->wb_index + 1) {
nfs_pageio_complete(desc);
break;
}
folio = nfs_page_to_folio(prev);
if (folio) {
if (index == folio_next_index(folio))
continue;
} else if (index == prev->wb_index + 1)
continue;
nfs_pageio_complete(desc);
break;
}
}
}

2
fs/nfs/pnfs.c
View File

@ -511,7 +511,7 @@ pnfs_layout_io_set_failed(struct pnfs_layout_hdr *lo, u32 iomode)
spin_lock(&inode->i_lock);
pnfs_layout_set_fail_bit(lo, pnfs_iomode_to_fail_bit(iomode));
pnfs_mark_matching_lsegs_invalid(lo, &head, &range, 0);
pnfs_mark_matching_lsegs_return(lo, &head, &range, 0);
spin_unlock(&inode->i_lock);
pnfs_free_lseg_list(&head);
dprintk("%s Setting layout IOMODE_%s fail bit\n", __func__,

10
fs/nfs/pnfs.h
View File

@ -193,7 +193,7 @@ struct pnfs_commit_ops {
void (*recover_commit_reqs) (struct list_head *list,
struct nfs_commit_info *cinfo);
struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,
struct page *page);
struct folio *folio);
};
struct pnfs_layout_hdr {
@ -395,7 +395,7 @@ void pnfs_generic_rw_release(void *data);
void pnfs_generic_recover_commit_reqs(struct list_head *dst,
struct nfs_commit_info *cinfo);
struct nfs_page *pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo,
struct page *page);
struct folio *folio);
int pnfs_generic_commit_pagelist(struct inode *inode,
struct list_head *mds_pages,
int how,
@ -557,13 +557,13 @@ pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)
static inline struct nfs_page *
pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
struct page *page)
struct folio *folio)
{
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
if (!fl_cinfo->ops || !fl_cinfo->ops->search_commit_reqs)
return NULL;
return fl_cinfo->ops->search_commit_reqs(cinfo, page);
return fl_cinfo->ops->search_commit_reqs(cinfo, folio);
}
/* Should the pNFS client commit and return the layout upon a setattr */
@ -864,7 +864,7 @@ pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)
static inline struct nfs_page *
pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
struct page *page)
struct folio *folio)
{
return NULL;
}

18
fs/nfs/pnfs_nfs.c
View File

@ -353,7 +353,7 @@ EXPORT_SYMBOL_GPL(pnfs_generic_recover_commit_reqs);
static struct nfs_page *
pnfs_bucket_search_commit_reqs(struct pnfs_commit_bucket *buckets,
unsigned int nbuckets, struct page *page)
unsigned int nbuckets, struct folio *folio)
{
struct nfs_page *req;
struct pnfs_commit_bucket *b;
@ -363,11 +363,11 @@ pnfs_bucket_search_commit_reqs(struct pnfs_commit_bucket *buckets,
* request is found */
for (i = 0, b = buckets; i < nbuckets; i++, b++) {
list_for_each_entry(req, &b->written, wb_list) {
if (req->wb_page == page)
if (nfs_page_to_folio(req) == folio)
return req->wb_head;
}
list_for_each_entry(req, &b->committing, wb_list) {
if (req->wb_page == page)
if (nfs_page_to_folio(req) == folio)
return req->wb_head;
}
}
@ -375,14 +375,14 @@ pnfs_bucket_search_commit_reqs(struct pnfs_commit_bucket *buckets,
}
/* pnfs_generic_search_commit_reqs - Search lists in @cinfo for the head request
* for @page
* for @folio
* @cinfo - commit info for current inode
* @page - page to search for matching head request
* @folio - page to search for matching head request
*
* Return: the head request if one is found, otherwise %NULL.
*/
struct nfs_page *
pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page)
struct nfs_page *pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo,
struct folio *folio)
{
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
struct pnfs_commit_array *array;
@ -390,7 +390,7 @@ pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page
list_for_each_entry(array, &fl_cinfo->commits, cinfo_list) {
req = pnfs_bucket_search_commit_reqs(array->buckets,
array->nbuckets, page);
array->nbuckets, folio);
if (req)
return req;
}
@ -1180,7 +1180,7 @@ pnfs_layout_mark_request_commit(struct nfs_page *req,
nfs_request_add_commit_list_locked(req, list, cinfo);
mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);
nfs_mark_page_unstable(req->wb_page, cinfo);
nfs_folio_mark_unstable(nfs_page_to_folio(req), cinfo);
return;
out_resched:
mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);

94
fs/nfs/read.c
View File

@ -49,12 +49,11 @@ static void nfs_readhdr_free(struct nfs_pgio_header *rhdr)
kmem_cache_free(nfs_rdata_cachep, rhdr);
}
static
int nfs_return_empty_page(struct page *page)
static int nfs_return_empty_folio(struct folio *folio)
{
zero_user(page, 0, PAGE_SIZE);
SetPageUptodate(page);
unlock_page(page);
folio_zero_segment(folio, 0, folio_size(folio));
folio_mark_uptodate(folio);
folio_unlock(folio);
return 0;
}
@ -111,18 +110,18 @@ EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds);
static void nfs_readpage_release(struct nfs_page *req, int error)
{
struct inode *inode = d_inode(nfs_req_openctx(req)->dentry);
struct page *page = req->wb_page;
struct folio *folio = nfs_page_to_folio(req);
dprintk("NFS: read done (%s/%llu %d@%lld)\n", inode->i_sb->s_id,
(unsigned long long)NFS_FILEID(inode), req->wb_bytes,
(long long)req_offset(req));
if (nfs_error_is_fatal_on_server(error) && error != -ETIMEDOUT)
SetPageError(page);
folio_set_error(folio);
if (nfs_page_group_sync_on_bit(req, PG_UNLOCKPAGE)) {
if (PageUptodate(page))
nfs_fscache_write_page(inode, page);
unlock_page(page);
if (folio_test_uptodate(folio))
nfs_fscache_write_page(inode, &folio->page);
folio_unlock(folio);
}
nfs_release_request(req);
}
@ -135,7 +134,7 @@ struct nfs_readdesc {
static void nfs_page_group_set_uptodate(struct nfs_page *req)
{
if (nfs_page_group_sync_on_bit(req, PG_UPTODATE))
SetPageUptodate(req->wb_page);
folio_mark_uptodate(nfs_page_to_folio(req));
}
static void nfs_read_completion(struct nfs_pgio_header *hdr)
@ -147,7 +146,7 @@ static void nfs_read_completion(struct nfs_pgio_header *hdr)
goto out;
while (!list_empty(&hdr->pages)) {
struct nfs_page *req = nfs_list_entry(hdr->pages.next);
struct page *page = req->wb_page;
struct folio *folio = nfs_page_to_folio(req);
unsigned long start = req->wb_pgbase;
unsigned long end = req->wb_pgbase + req->wb_bytes;
@ -157,14 +156,14 @@ static void nfs_read_completion(struct nfs_pgio_header *hdr)
if (bytes > hdr->good_bytes) {
/* nothing in this request was good, so zero
* the full extent of the request */
zero_user_segment(page, start, end);
folio_zero_segment(folio, start, end);
} else if (hdr->good_bytes - bytes < req->wb_bytes) {
/* part of this request has good bytes, but
* not all. zero the bad bytes */
start += hdr->good_bytes - bytes;
WARN_ON(start < req->wb_pgbase);
zero_user_segment(page, start, end);
folio_zero_segment(folio, start, end);
}
}
error = 0;
@ -281,33 +280,34 @@ static void nfs_readpage_result(struct rpc_task *task,
nfs_readpage_retry(task, hdr);
}
static int
readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
static int readpage_async_filler(struct nfs_readdesc *desc, struct folio *folio)
{
struct inode *inode = page_file_mapping(page)->host;
unsigned int rsize = NFS_SERVER(inode)->rsize;
struct inode *inode = folio_file_mapping(folio)->host;
struct nfs_server *server = NFS_SERVER(inode);
size_t fsize = folio_size(folio);
unsigned int rsize = server->rsize;
struct nfs_page *new;
unsigned int len, aligned_len;
int error;
len = nfs_page_length(page);
len = nfs_folio_length(folio);
if (len == 0)
return nfs_return_empty_page(page);
return nfs_return_empty_folio(folio);
aligned_len = min_t(unsigned int, ALIGN(len, rsize), PAGE_SIZE);
aligned_len = min_t(unsigned int, ALIGN(len, rsize), fsize);
if (!IS_SYNC(page->mapping->host)) {
error = nfs_fscache_read_page(page->mapping->host, page);
if (!IS_SYNC(inode)) {
error = nfs_fscache_read_page(inode, &folio->page);
if (error == 0)
goto out_unlock;
}
new = nfs_create_request(desc->ctx, page, 0, aligned_len);
new = nfs_page_create_from_folio(desc->ctx, folio, 0, aligned_len);
if (IS_ERR(new))
goto out_error;
if (len < PAGE_SIZE)
zero_user_segment(page, len, PAGE_SIZE);
if (len < fsize)
folio_zero_segment(folio, len, fsize);
if (!nfs_pageio_add_request(&desc->pgio, new)) {
nfs_list_remove_request(new);
error = desc->pgio.pg_error;
@ -318,7 +318,7 @@ readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
out_error:
error = PTR_ERR(new);
out_unlock:
unlock_page(page);
folio_unlock(folio);
out:
return error;
}
@ -331,61 +331,54 @@ readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
*/
int nfs_read_folio(struct file *file, struct folio *folio)
{
struct page *page = &folio->page;
struct nfs_readdesc desc;
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = file_inode(file);
int ret;
trace_nfs_aop_readpage(inode, page);
trace_nfs_aop_readpage(inode, folio);
nfs_inc_stats(inode, NFSIOS_VFSREADPAGE);
/*
* Try to flush any pending writes to the file..
*
* NOTE! Because we own the page lock, there cannot
* NOTE! Because we own the folio lock, there cannot
* be any new pending writes generated at this point
* for this page (other pages can be written to).
* for this folio (other folios can be written to).
*/
ret = nfs_wb_page(inode, page);
ret = nfs_wb_folio(inode, folio);
if (ret)
goto out_unlock;
if (PageUptodate(page))
if (folio_test_uptodate(folio))
goto out_unlock;
ret = -ESTALE;
if (NFS_STALE(inode))
goto out_unlock;
if (file == NULL) {
ret = -EBADF;
desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
if (desc.ctx == NULL)
goto out_unlock;
} else
desc.ctx = get_nfs_open_context(nfs_file_open_context(file));
desc.ctx = get_nfs_open_context(nfs_file_open_context(file));
xchg(&desc.ctx->error, 0);
nfs_pageio_init_read(&desc.pgio, inode, false,
&nfs_async_read_completion_ops);
ret = readpage_async_filler(&desc, page);
ret = readpage_async_filler(&desc, folio);
if (ret)
goto out;
nfs_pageio_complete_read(&desc.pgio);
ret = desc.pgio.pg_error < 0 ? desc.pgio.pg_error : 0;
if (!ret) {
ret = wait_on_page_locked_killable(page);
if (!PageUptodate(page) && !ret)
ret = folio_wait_locked_killable(folio);
if (!folio_test_uptodate(folio) && !ret)
ret = xchg(&desc.ctx->error, 0);
}
out:
put_nfs_open_context(desc.ctx);
trace_nfs_aop_readpage_done(inode, page, ret);
trace_nfs_aop_readpage_done(inode, folio, ret);
return ret;
out_unlock:
unlock_page(page);
trace_nfs_aop_readpage_done(inode, page, ret);
folio_unlock(folio);
trace_nfs_aop_readpage_done(inode, folio, ret);
return ret;
}
@ -395,7 +388,7 @@ void nfs_readahead(struct readahead_control *ractl)
struct file *file = ractl->file;
struct nfs_readdesc desc;
struct inode *inode = ractl->mapping->host;
struct page *page;
struct folio *folio;
int ret;
trace_nfs_aop_readahead(inode, readahead_pos(ractl), nr_pages);
@ -416,9 +409,8 @@ void nfs_readahead(struct readahead_control *ractl)
nfs_pageio_init_read(&desc.pgio, inode, false,
&nfs_async_read_completion_ops);
while ((page = readahead_page(ractl)) != NULL) {
ret = readpage_async_filler(&desc, page);
put_page(page);
while ((folio = readahead_folio(ractl)) != NULL) {
ret = readpage_async_filler(&desc, folio);
if (ret)
break;
}

380
fs/nfs/write.c
View File

@ -64,7 +64,7 @@ static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo,
struct inode *inode);
static struct nfs_page *
nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi,
struct page *page);
struct folio *folio);
static struct kmem_cache *nfs_wdata_cachep;
static mempool_t *nfs_wdata_mempool;
@ -171,31 +171,28 @@ nfs_cancel_remove_inode(struct nfs_page *req, struct inode *inode)
return 0;
}
static struct nfs_page *
nfs_page_private_request(struct page *page)
static struct nfs_page *nfs_folio_private_request(struct folio *folio)
{
if (!PagePrivate(page))
return NULL;
return (struct nfs_page *)page_private(page);
return folio_get_private(folio);
}
/*
* nfs_page_find_head_request_locked - find head request associated with @page
/**
* nfs_folio_find_private_request - find head request associated with a folio
* @folio: pointer to folio
*
* must be called while holding the inode lock.
*
* returns matching head request with reference held, or NULL if not found.
*/
static struct nfs_page *
nfs_page_find_private_request(struct page *page)
static struct nfs_page *nfs_folio_find_private_request(struct folio *folio)
{
struct address_space *mapping = page_file_mapping(page);
struct address_space *mapping = folio_file_mapping(folio);
struct nfs_page *req;
if (!PagePrivate(page))
if (!folio_test_private(folio))
return NULL;
spin_lock(&mapping->private_lock);
req = nfs_page_private_request(page);
req = nfs_folio_private_request(folio);
if (req) {
WARN_ON_ONCE(req->wb_head != req);
kref_get(&req->wb_kref);
@ -204,18 +201,17 @@ nfs_page_find_private_request(struct page *page)
return req;
}
static struct nfs_page *
nfs_page_find_swap_request(struct page *page)
static struct nfs_page *nfs_folio_find_swap_request(struct folio *folio)
{
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = folio_file_mapping(folio)->host;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_page *req = NULL;
if (!PageSwapCache(page))
if (!folio_test_swapcache(folio))
return NULL;
mutex_lock(&nfsi->commit_mutex);
if (PageSwapCache(page)) {
if (folio_test_swapcache(folio)) {
req = nfs_page_search_commits_for_head_request_locked(nfsi,
page);
folio);
if (req) {
WARN_ON_ONCE(req->wb_head != req);
kref_get(&req->wb_kref);
@ -225,29 +221,30 @@ nfs_page_find_swap_request(struct page *page)
return req;
}
/*
* nfs_page_find_head_request - find head request associated with @page
/**
* nfs_folio_find_head_request - find head request associated with a folio
* @folio: pointer to folio
*
* returns matching head request with reference held, or NULL if not found.
*/
static struct nfs_page *nfs_page_find_head_request(struct page *page)
static struct nfs_page *nfs_folio_find_head_request(struct folio *folio)
{
struct nfs_page *req;
req = nfs_page_find_private_request(page);
req = nfs_folio_find_private_request(folio);
if (!req)
req = nfs_page_find_swap_request(page);
req = nfs_folio_find_swap_request(folio);
return req;
}
static struct nfs_page *nfs_find_and_lock_page_request(struct page *page)
static struct nfs_page *nfs_folio_find_and_lock_request(struct folio *folio)
{
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = folio_file_mapping(folio)->host;
struct nfs_page *req, *head;
int ret;
for (;;) {
req = nfs_page_find_head_request(page);
req = nfs_folio_find_head_request(folio);
if (!req)
return req;
head = nfs_page_group_lock_head(req);
@ -261,9 +258,9 @@ static struct nfs_page *nfs_find_and_lock_page_request(struct page *page)
return ERR_PTR(ret);
}
/* Ensure that nobody removed the request before we locked it */
if (head == nfs_page_private_request(page))
if (head == nfs_folio_private_request(folio))
break;
if (PageSwapCache(page))
if (folio_test_swapcache(folio))
break;
nfs_unlock_and_release_request(head);
}
@ -271,18 +268,19 @@ static struct nfs_page *nfs_find_and_lock_page_request(struct page *page)
}
/* Adjust the file length if we're writing beyond the end */
static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int count)
static void nfs_grow_file(struct folio *folio, unsigned int offset,
unsigned int count)
{
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = folio_file_mapping(folio)->host;
loff_t end, i_size;
pgoff_t end_index;
spin_lock(&inode->i_lock);
i_size = i_size_read(inode);
end_index = (i_size - 1) >> PAGE_SHIFT;
if (i_size > 0 && page_index(page) < end_index)
end_index = ((i_size - 1) >> folio_shift(folio)) << folio_order(folio);
if (i_size > 0 && folio_index(folio) < end_index)
goto out;
end = page_file_offset(page) + ((loff_t)offset+count);
end = folio_file_pos(folio) + (loff_t)offset + (loff_t)count;
if (i_size >= end)
goto out;
trace_nfs_size_grow(inode, end);
@ -308,11 +306,11 @@ static void nfs_set_pageerror(struct address_space *mapping)
spin_unlock(&inode->i_lock);
}
static void nfs_mapping_set_error(struct page *page, int error)
static void nfs_mapping_set_error(struct folio *folio, int error)
{
struct address_space *mapping = page_file_mapping(page);
struct address_space *mapping = folio_file_mapping(folio);
SetPageError(page);
folio_set_error(folio);
filemap_set_wb_err(mapping, error);
if (mapping->host)
errseq_set(&mapping->host->i_sb->s_wb_err,
@ -359,9 +357,9 @@ nfs_page_group_search_locked(struct nfs_page *head, unsigned int page_offset)
*/
static bool nfs_page_group_covers_page(struct nfs_page *req)
{
unsigned int len = nfs_folio_length(nfs_page_to_folio(req));
struct nfs_page *tmp;
unsigned int pos = 0;
unsigned int len = nfs_page_length(req->wb_page);
nfs_page_group_lock(req);
@ -381,11 +379,13 @@ static bool nfs_page_group_covers_page(struct nfs_page *req)
*/
static void nfs_mark_uptodate(struct nfs_page *req)
{
if (PageUptodate(req->wb_page))
struct folio *folio = nfs_page_to_folio(req);
if (folio_test_uptodate(folio))
return;
if (!nfs_page_group_covers_page(req))
return;
SetPageUptodate(req->wb_page);
folio_mark_uptodate(folio);
}
static int wb_priority(struct writeback_control *wbc)
@ -407,35 +407,34 @@ int nfs_congestion_kb;
#define NFS_CONGESTION_OFF_THRESH \
(NFS_CONGESTION_ON_THRESH - (NFS_CONGESTION_ON_THRESH >> 2))
static void nfs_set_page_writeback(struct page *page)
static void nfs_folio_set_writeback(struct folio *folio)
{
struct inode *inode = page_file_mapping(page)->host;
struct nfs_server *nfss = NFS_SERVER(inode);
int ret = test_set_page_writeback(page);
struct nfs_server *nfss = NFS_SERVER(folio_file_mapping(folio)->host);
WARN_ON_ONCE(ret != 0);
if (atomic_long_inc_return(&nfss->writeback) >
NFS_CONGESTION_ON_THRESH)
folio_start_writeback(folio);
if (atomic_long_inc_return(&nfss->writeback) > NFS_CONGESTION_ON_THRESH)
nfss->write_congested = 1;
}
static void nfs_end_page_writeback(struct nfs_page *req)
static void nfs_folio_end_writeback(struct folio *folio)
{
struct inode *inode = page_file_mapping(req->wb_page)->host;
struct nfs_server *nfss = NFS_SERVER(inode);
bool is_done;
struct nfs_server *nfss = NFS_SERVER(folio_file_mapping(folio)->host);
is_done = nfs_page_group_sync_on_bit(req, PG_WB_END);
nfs_unlock_request(req);
if (!is_done)
return;
end_page_writeback(req->wb_page);
if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
folio_end_writeback(folio);
if (atomic_long_dec_return(&nfss->writeback) <
NFS_CONGESTION_OFF_THRESH)
nfss->write_congested = 0;
}
static void nfs_page_end_writeback(struct nfs_page *req)
{
if (nfs_page_group_sync_on_bit(req, PG_WB_END)) {
nfs_unlock_request(req);
nfs_folio_end_writeback(nfs_page_to_folio(req));
} else
nfs_unlock_request(req);
}
/*
* nfs_destroy_unlinked_subrequests - destroy recently unlinked subrequests
*
@ -550,7 +549,7 @@ nfs_join_page_group(struct nfs_page *head, struct inode *inode)
/*
* nfs_lock_and_join_requests - join all subreqs to the head req
* @page: the page used to lookup the "page group" of nfs_page structures
* @folio: the folio used to lookup the "page group" of nfs_page structures
*
* This function joins all sub requests to the head request by first
* locking all requests in the group, cancelling any pending operations
@ -560,13 +559,12 @@ nfs_join_page_group(struct nfs_page *head, struct inode *inode)
*
* Returns a locked, referenced pointer to the head request - which after
* this call is guaranteed to be the only request associated with the page.
* Returns NULL if no requests are found for @page, or a ERR_PTR if an
* Returns NULL if no requests are found for @folio, or a ERR_PTR if an
* error was encountered.
*/
static struct nfs_page *
nfs_lock_and_join_requests(struct page *page)
static struct nfs_page *nfs_lock_and_join_requests(struct folio *folio)
{
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = folio_file_mapping(folio)->host;
struct nfs_page *head;
int ret;
@ -575,7 +573,7 @@ nfs_lock_and_join_requests(struct page *page)
* reference to the whole page group - the group will not be destroyed
* until the head reference is released.
*/
head = nfs_find_and_lock_page_request(page);
head = nfs_folio_find_and_lock_request(folio);
if (IS_ERR_OR_NULL(head))
return head;
@ -593,11 +591,10 @@ nfs_lock_and_join_requests(struct page *page)
static void nfs_write_error(struct nfs_page *req, int error)
{
trace_nfs_write_error(page_file_mapping(req->wb_page)->host, req,
error);
nfs_mapping_set_error(req->wb_page, error);
trace_nfs_write_error(nfs_page_to_inode(req), req, error);
nfs_mapping_set_error(nfs_page_to_folio(req), error);
nfs_inode_remove_request(req);
nfs_end_page_writeback(req);
nfs_page_end_writeback(req);
nfs_release_request(req);
}
@ -605,21 +602,21 @@ static void nfs_write_error(struct nfs_page *req, int error)
* Find an associated nfs write request, and prepare to flush it out
* May return an error if the user signalled nfs_wait_on_request().
*/
static int nfs_page_async_flush(struct page *page,
static int nfs_page_async_flush(struct folio *folio,
struct writeback_control *wbc,
struct nfs_pageio_descriptor *pgio)
{
struct nfs_page *req;
int ret = 0;
req = nfs_lock_and_join_requests(page);
req = nfs_lock_and_join_requests(folio);
if (!req)
goto out;
ret = PTR_ERR(req);
if (IS_ERR(req))
goto out;
nfs_set_page_writeback(page);
nfs_folio_set_writeback(folio);
WARN_ON_ONCE(test_bit(PG_CLEAN, &req->wb_flags));
/* If there is a fatal error that covers this write, just exit */
@ -637,12 +634,12 @@ static int nfs_page_async_flush(struct page *page,
goto out_launder;
if (wbc->sync_mode == WB_SYNC_NONE)
ret = AOP_WRITEPAGE_ACTIVATE;
redirty_page_for_writepage(wbc, page);
folio_redirty_for_writepage(wbc, folio);
nfs_redirty_request(req);
pgio->pg_error = 0;
} else
nfs_add_stats(page_file_mapping(page)->host,
NFSIOS_WRITEPAGES, 1);
nfs_add_stats(folio_file_mapping(folio)->host,
NFSIOS_WRITEPAGES, 1);
out:
return ret;
out_launder:
@ -650,21 +647,21 @@ static int nfs_page_async_flush(struct page *page,
return 0;
}
static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
static int nfs_do_writepage(struct folio *folio, struct writeback_control *wbc,
struct nfs_pageio_descriptor *pgio)
{
nfs_pageio_cond_complete(pgio, page_index(page));
return nfs_page_async_flush(page, wbc, pgio);
nfs_pageio_cond_complete(pgio, folio_index(folio));
return nfs_page_async_flush(folio, wbc, pgio);
}
/*
* Write an mmapped page to the server.
*/
static int nfs_writepage_locked(struct page *page,
static int nfs_writepage_locked(struct folio *folio,
struct writeback_control *wbc)
{
struct nfs_pageio_descriptor pgio;
struct inode *inode = page_file_mapping(page)->host;
struct inode *inode = folio_file_mapping(folio)->host;
int err;
if (wbc->sync_mode == WB_SYNC_NONE &&
@ -672,9 +669,9 @@ static int nfs_writepage_locked(struct page *page,
return AOP_WRITEPAGE_ACTIVATE;
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE);
nfs_pageio_init_write(&pgio, inode, 0,
false, &nfs_async_write_completion_ops);
err = nfs_do_writepage(page, wbc, &pgio);
nfs_pageio_init_write(&pgio, inode, 0, false,
&nfs_async_write_completion_ops);
err = nfs_do_writepage(folio, wbc, &pgio);
pgio.pg_error = 0;
nfs_pageio_complete(&pgio);
return err;
@ -682,19 +679,22 @@ static int nfs_writepage_locked(struct page *page,
int nfs_writepage(struct page *page, struct writeback_control *wbc)
{
struct folio *folio = page_folio(page);
int ret;
ret = nfs_writepage_locked(page, wbc);
ret = nfs_writepage_locked(folio, wbc);
if (ret != AOP_WRITEPAGE_ACTIVATE)
unlock_page(page);
return ret;
}
static int nfs_writepages_callback(struct page *page, struct writeback_control *wbc, void *data)
static int nfs_writepages_callback(struct page *page,
struct writeback_control *wbc, void *data)
{
struct folio *folio = page_folio(page);
int ret;
ret = nfs_do_writepage(page, wbc, data);
ret = nfs_do_writepage(folio, wbc, data);
if (ret != AOP_WRITEPAGE_ACTIVATE)
unlock_page(page);
return ret;
@ -750,10 +750,11 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
/*
* Insert a write request into an inode
*/
static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
static void nfs_inode_add_request(struct nfs_page *req)
{
struct address_space *mapping = page_file_mapping(req->wb_page);
struct nfs_inode *nfsi = NFS_I(inode);
struct folio *folio = nfs_page_to_folio(req);
struct address_space *mapping = folio_file_mapping(folio);
struct nfs_inode *nfsi = NFS_I(mapping->host);
WARN_ON_ONCE(req->wb_this_page != req);
@ -765,10 +766,10 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
* with invalidate/truncate.
*/
spin_lock(&mapping->private_lock);
if (likely(!PageSwapCache(req->wb_page))) {
if (likely(!folio_test_swapcache(folio))) {
set_bit(PG_MAPPED, &req->wb_flags);
SetPagePrivate(req->wb_page);
set_page_private(req->wb_page, (unsigned long)req);
folio_set_private(folio);
folio->private = req;
}
spin_unlock(&mapping->private_lock);
atomic_long_inc(&nfsi->nrequests);
@ -785,47 +786,43 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
*/
static void nfs_inode_remove_request(struct nfs_page *req)
{
struct address_space *mapping = page_file_mapping(req->wb_page);
struct inode *inode = mapping->host;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_page *head;
if (nfs_page_group_sync_on_bit(req, PG_REMOVE)) {
head = req->wb_head;
struct folio *folio = nfs_page_to_folio(req->wb_head);
struct address_space *mapping = folio_file_mapping(folio);
spin_lock(&mapping->private_lock);
if (likely(head->wb_page && !PageSwapCache(head->wb_page))) {
set_page_private(head->wb_page, 0);
ClearPagePrivate(head->wb_page);
clear_bit(PG_MAPPED, &head->wb_flags);
if (likely(folio && !folio_test_swapcache(folio))) {
folio->private = NULL;
folio_clear_private(folio);
clear_bit(PG_MAPPED, &req->wb_head->wb_flags);
}
spin_unlock(&mapping->private_lock);
}
if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags)) {
nfs_release_request(req);
atomic_long_dec(&nfsi->nrequests);
atomic_long_dec(&NFS_I(nfs_page_to_inode(req))->nrequests);
}
}
static void
nfs_mark_request_dirty(struct nfs_page *req)
static void nfs_mark_request_dirty(struct nfs_page *req)
{
if (req->wb_page)
__set_page_dirty_nobuffers(req->wb_page);
struct folio *folio = nfs_page_to_folio(req);
if (folio)
filemap_dirty_folio(folio_mapping(folio), folio);
}
/*
* nfs_page_search_commits_for_head_request_locked
*
* Search through commit lists on @inode for the head request for @page.
* Search through commit lists on @inode for the head request for @folio.
* Must be called while holding the inode (which is cinfo) lock.
*
* Returns the head request if found, or NULL if not found.
*/
static struct nfs_page *
nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi,
struct page *page)
struct folio *folio)
{
struct nfs_page *freq, *t;
struct nfs_commit_info cinfo;
@ -834,13 +831,13 @@ nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi,
nfs_init_cinfo_from_inode(&cinfo, inode);
/* search through pnfs commit lists */
freq = pnfs_search_commit_reqs(inode, &cinfo, page);
freq = pnfs_search_commit_reqs(inode, &cinfo, folio);
if (freq)
return freq->wb_head;
/* Linearly search the commit list for the correct request */
list_for_each_entry_safe(freq, t, &cinfo.mds->list, wb_list) {
if (freq->wb_page == page)
if (nfs_page_to_folio(freq) == folio)
return freq->wb_head;
}
@ -888,8 +885,7 @@ nfs_request_add_commit_list(struct nfs_page *req, struct nfs_commit_info *cinfo)
mutex_lock(&NFS_I(cinfo->inode)->commit_mutex);
nfs_request_add_commit_list_locked(req, &cinfo->mds->list, cinfo);
mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);
if (req->wb_page)
nfs_mark_page_unstable(req->wb_page, cinfo);
nfs_folio_mark_unstable(nfs_page_to_folio(req), cinfo);
}
EXPORT_SYMBOL_GPL(nfs_request_add_commit_list);
@ -948,12 +944,15 @@ nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
nfs_request_add_commit_list(req, cinfo);
}
static void
nfs_clear_page_commit(struct page *page)
static void nfs_folio_clear_commit(struct folio *folio)
{
dec_node_page_state(page, NR_WRITEBACK);
dec_wb_stat(&inode_to_bdi(page_file_mapping(page)->host)->wb,
WB_WRITEBACK);
if (folio) {
long nr = folio_nr_pages(folio);
node_stat_mod_folio(folio, NR_WRITEBACK, -nr);
wb_stat_mod(&inode_to_bdi(folio_file_mapping(folio)->host)->wb,
WB_WRITEBACK, -nr);
}
}
/* Called holding the request lock on @req */
@ -971,7 +970,7 @@ nfs_clear_request_commit(struct nfs_page *req)
nfs_request_remove_commit_list(req, &cinfo);
}
mutex_unlock(&NFS_I(inode)->commit_mutex);
nfs_clear_page_commit(req->wb_page);
nfs_folio_clear_commit(nfs_page_to_folio(req));
}
}
@ -1003,7 +1002,8 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) &&
(hdr->good_bytes < bytes)) {
trace_nfs_comp_error(hdr->inode, req, hdr->error);
nfs_mapping_set_error(req->wb_page, hdr->error);
nfs_mapping_set_error(nfs_page_to_folio(req),
hdr->error);
goto remove_req;
}
if (nfs_write_need_commit(hdr)) {
@ -1017,7 +1017,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
remove_req:
nfs_inode_remove_request(req);
next:
nfs_end_page_writeback(req);
nfs_page_end_writeback(req);
nfs_release_request(req);
}
out:
@ -1093,10 +1093,9 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst,
* If the attempt fails, then the existing request is flushed out
* to disk.
*/
static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
struct page *page,
unsigned int offset,
unsigned int bytes)
static struct nfs_page *nfs_try_to_update_request(struct folio *folio,
unsigned int offset,
unsigned int bytes)
{
struct nfs_page *req;
unsigned int rqend;
@ -1105,7 +1104,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
end = offset + bytes;
req = nfs_lock_and_join_requests(page);
req = nfs_lock_and_join_requests(folio);
if (IS_ERR_OR_NULL(req))
return req;
@ -1138,7 +1137,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
*/
nfs_mark_request_dirty(req);
nfs_unlock_and_release_request(req);
error = nfs_wb_page(inode, page);
error = nfs_wb_folio(folio_file_mapping(folio)->host, folio);
return (error < 0) ? ERR_PTR(error) : NULL;
}
@ -1149,40 +1148,42 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
* if we have to add a new request. Also assumes that the caller has
* already called nfs_flush_incompatible() if necessary.
*/
static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx,
struct page *page, unsigned int offset, unsigned int bytes)
static struct nfs_page *nfs_setup_write_request(struct nfs_open_context *ctx,
struct folio *folio,
unsigned int offset,
unsigned int bytes)
{
struct inode *inode = page_file_mapping(page)->host;
struct nfs_page *req;
struct nfs_page *req;
req = nfs_try_to_update_request(inode, page, offset, bytes);
req = nfs_try_to_update_request(folio, offset, bytes);
if (req != NULL)
goto out;
req = nfs_create_request(ctx, page, offset, bytes);
req = nfs_page_create_from_folio(ctx, folio, offset, bytes);
if (IS_ERR(req))
goto out;
nfs_inode_add_request(inode, req);
nfs_inode_add_request(req);
out:
return req;
}
static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
unsigned int offset, unsigned int count)
static int nfs_writepage_setup(struct nfs_open_context *ctx,
struct folio *folio, unsigned int offset,
unsigned int count)
{
struct nfs_page *req;
struct nfs_page *req;
req = nfs_setup_write_request(ctx, page, offset, count);
req = nfs_setup_write_request(ctx, folio, offset, count);
if (IS_ERR(req))
return PTR_ERR(req);
/* Update file length */
nfs_grow_file(page, offset, count);
nfs_grow_file(folio, offset, count);
nfs_mark_uptodate(req);
nfs_mark_request_dirty(req);
nfs_unlock_and_release_request(req);
return 0;
}
int nfs_flush_incompatible(struct file *file, struct page *page)
int nfs_flush_incompatible(struct file *file, struct folio *folio)
{
struct nfs_open_context *ctx = nfs_file_open_context(file);
struct nfs_lock_context *l_ctx;
@ -1198,12 +1199,12 @@ int nfs_flush_incompatible(struct file *file, struct page *page)
* dropped page.
*/
do {
req = nfs_page_find_head_request(page);
req = nfs_folio_find_head_request(folio);
if (req == NULL)
return 0;
l_ctx = req->wb_lock_context;
do_flush = req->wb_page != page ||
!nfs_match_open_context(nfs_req_openctx(req), ctx);
do_flush = nfs_page_to_folio(req) != folio ||
!nfs_match_open_context(nfs_req_openctx(req), ctx);
if (l_ctx && flctx &&
!(list_empty_careful(&flctx->flc_posix) &&
list_empty_careful(&flctx->flc_flock))) {
@ -1212,7 +1213,7 @@ int nfs_flush_incompatible(struct file *file, struct page *page)
nfs_release_request(req);
if (!do_flush)
return 0;
status = nfs_wb_page(page_file_mapping(page)->host, page);
status = nfs_wb_folio(folio_file_mapping(folio)->host, folio);
} while (status == 0);
return status;
}
@ -1284,9 +1285,9 @@ bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx, struct inode *inode)
* the PageUptodate() flag. In this case, we will need to turn off
* write optimisations that depend on the page contents being correct.
*/
static bool nfs_write_pageuptodate(struct page *page, struct inode *inode,
unsigned int pagelen)
static bool nfs_folio_write_uptodate(struct folio *folio, unsigned int pagelen)
{
struct inode *inode = folio_file_mapping(folio)->host;
struct nfs_inode *nfsi = NFS_I(inode);
if (nfs_have_delegated_attributes(inode))
@ -1300,7 +1301,7 @@ static bool nfs_write_pageuptodate(struct page *page, struct inode *inode,
out:
if (nfsi->cache_validity & NFS_INO_INVALID_DATA && pagelen != 0)
return false;
return PageUptodate(page) != 0;
return folio_test_uptodate(folio) != 0;
}
static bool
@ -1318,16 +1319,17 @@ is_whole_file_wrlock(struct file_lock *fl)
* If the file is opened for synchronous writes then we can just skip the rest
* of the checks.
*/
static int nfs_can_extend_write(struct file *file, struct page *page,
struct inode *inode, unsigned int pagelen)
static int nfs_can_extend_write(struct file *file, struct folio *folio,
unsigned int pagelen)
{
int ret;
struct inode *inode = file_inode(file);
struct file_lock_context *flctx = locks_inode_context(inode);
struct file_lock *fl;
int ret;
if (file->f_flags & O_DSYNC)
return 0;
if (!nfs_write_pageuptodate(page, inode, pagelen))
if (!nfs_folio_write_uptodate(folio, pagelen))
return 0;
if (NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE))
return 1;
@ -1359,33 +1361,33 @@ static int nfs_can_extend_write(struct file *file, struct page *page,
* XXX: Keep an eye on generic_file_read to make sure it doesn't do bad
* things with a page scheduled for an RPC call (e.g. invalidate it).
*/
int nfs_updatepage(struct file *file, struct page *page,
unsigned int offset, unsigned int count)
int nfs_update_folio(struct file *file, struct folio *folio,
unsigned int offset, unsigned int count)
{
struct nfs_open_context *ctx = nfs_file_open_context(file);
struct address_space *mapping = page_file_mapping(page);
struct inode *inode = mapping->host;
unsigned int pagelen = nfs_page_length(page);
struct address_space *mapping = folio_file_mapping(folio);
struct inode *inode = mapping->host;
unsigned int pagelen = nfs_folio_length(folio);
int status = 0;
nfs_inc_stats(inode, NFSIOS_VFSUPDATEPAGE);
dprintk("NFS: nfs_updatepage(%pD2 %d@%lld)\n",
file, count, (long long)(page_file_offset(page) + offset));
dprintk("NFS: nfs_update_folio(%pD2 %d@%lld)\n", file, count,
(long long)(folio_file_pos(folio) + offset));
if (!count)
goto out;
if (nfs_can_extend_write(file, page, inode, pagelen)) {
if (nfs_can_extend_write(file, folio, pagelen)) {
count = max(count + offset, pagelen);
offset = 0;
}
status = nfs_writepage_setup(ctx, page, offset, count);
status = nfs_writepage_setup(ctx, folio, offset, count);
if (status < 0)
nfs_set_pageerror(mapping);
out:
dprintk("NFS: nfs_updatepage returns %d (isize %lld)\n",
dprintk("NFS: nfs_update_folio returns %d (isize %lld)\n",
status, (long long)i_size_read(inode));
return status;
}
@ -1421,13 +1423,13 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr,
*/
static void nfs_redirty_request(struct nfs_page *req)
{
struct nfs_inode *nfsi = NFS_I(page_file_mapping(req->wb_page)->host);
struct nfs_inode *nfsi = NFS_I(nfs_page_to_inode(req));
/* Bump the transmission count */
req->wb_nio++;
nfs_mark_request_dirty(req);
atomic_long_inc(&nfsi->redirtied_pages);
nfs_end_page_writeback(req);
nfs_page_end_writeback(req);
nfs_release_request(req);
}
@ -1785,18 +1787,18 @@ void nfs_retry_commit(struct list_head *page_list,
req = nfs_list_entry(page_list->next);
nfs_list_remove_request(req);
nfs_mark_request_commit(req, lseg, cinfo, ds_commit_idx);
if (!cinfo->dreq)
nfs_clear_page_commit(req->wb_page);
nfs_folio_clear_commit(nfs_page_to_folio(req));
nfs_unlock_and_release_request(req);
}
}
EXPORT_SYMBOL_GPL(nfs_retry_commit);
static void
nfs_commit_resched_write(struct nfs_commit_info *cinfo,
struct nfs_page *req)
static void nfs_commit_resched_write(struct nfs_commit_info *cinfo,
struct nfs_page *req)
{
__set_page_dirty_nobuffers(req->wb_page);
struct folio *folio = nfs_page_to_folio(req);
filemap_dirty_folio(folio_mapping(folio), folio);
}
/*
@ -1847,12 +1849,13 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
int status = data->task.tk_status;
struct nfs_commit_info cinfo;
struct nfs_server *nfss;
struct folio *folio;
while (!list_empty(&data->pages)) {
req = nfs_list_entry(data->pages.next);
nfs_list_remove_request(req);
if (req->wb_page)
nfs_clear_page_commit(req->wb_page);
folio = nfs_page_to_folio(req);
nfs_folio_clear_commit(folio);
dprintk("NFS: commit (%s/%llu %d@%lld)",
nfs_req_openctx(req)->dentry->d_sb->s_id,
@ -1860,10 +1863,10 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
req->wb_bytes,
(long long)req_offset(req));
if (status < 0) {
if (req->wb_page) {
if (folio) {
trace_nfs_commit_error(data->inode, req,
status);
nfs_mapping_set_error(req->wb_page, status);
nfs_mapping_set_error(folio, status);
nfs_inode_remove_request(req);
}
dprintk_cont(", error = %d\n", status);
@ -1874,7 +1877,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
* returned by the server against all stored verfs. */
if (nfs_write_match_verf(verf, req)) {
/* We have a match */
if (req->wb_page)
if (folio)
nfs_inode_remove_request(req);
dprintk_cont(" OK\n");
goto next;
@ -2055,7 +2058,7 @@ int nfs_wb_folio_cancel(struct inode *inode, struct folio *folio)
/* blocking call to cancel all requests and join to a single (head)
* request */
req = nfs_lock_and_join_requests(&folio->page);
req = nfs_lock_and_join_requests(folio);
if (IS_ERR(req)) {
ret = PTR_ERR(req);
@ -2071,13 +2074,18 @@ int nfs_wb_folio_cancel(struct inode *inode, struct folio *folio)
return ret;
}
/*
* Write back all requests on one page - we do this before reading it.
/**
* nfs_wb_folio - Write back all requests on one page
* @inode: pointer to page
* @folio: pointer to folio
*
* Assumes that the folio has been locked by the caller, and will
* not unlock it.
*/
int nfs_wb_page(struct inode *inode, struct page *page)
int nfs_wb_folio(struct inode *inode, struct folio *folio)
{
loff_t range_start = page_file_offset(page);
loff_t range_end = range_start + (loff_t)(PAGE_SIZE - 1);
loff_t range_start = folio_file_pos(folio);
loff_t range_end = range_start + (loff_t)folio_size(folio) - 1;
struct writeback_control wbc = {
.sync_mode = WB_SYNC_ALL,
.nr_to_write = 0,
@ -2086,25 +2094,25 @@ int nfs_wb_page(struct inode *inode, struct page *page)
};
int ret;
trace_nfs_writeback_page_enter(inode);
trace_nfs_writeback_folio(inode, folio);
for (;;) {
wait_on_page_writeback(page);
if (clear_page_dirty_for_io(page)) {
ret = nfs_writepage_locked(page, &wbc);
folio_wait_writeback(folio);
if (folio_clear_dirty_for_io(folio)) {
ret = nfs_writepage_locked(folio, &wbc);
if (ret < 0)
goto out_error;
continue;
}
ret = 0;
if (!PagePrivate(page))
if (!folio_test_private(folio))
break;
ret = nfs_commit_inode(inode, FLUSH_SYNC);
if (ret < 0)
goto out_error;
}
out_error:
trace_nfs_writeback_page_exit(inode, ret);
trace_nfs_writeback_folio_done(inode, folio, ret);
return ret;
}

7
include/linux/nfs_fs.h
View File

@ -569,8 +569,9 @@ extern void nfs_complete_unlink(struct dentry *dentry, struct inode *);
extern int nfs_congestion_kb;
extern int nfs_writepage(struct page *page, struct writeback_control *wbc);
extern int nfs_writepages(struct address_space *, struct writeback_control *);
extern int nfs_flush_incompatible(struct file *file, struct page *page);
extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
extern int nfs_flush_incompatible(struct file *file, struct folio *folio);
extern int nfs_update_folio(struct file *file, struct folio *folio,
unsigned int offset, unsigned int count);
/*
* Try to write back everything synchronously (but check the
@ -578,7 +579,7 @@ extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned
*/
extern int nfs_sync_inode(struct inode *inode);
extern int nfs_wb_all(struct inode *inode);
extern int nfs_wb_page(struct inode *inode, struct page *page);
extern int nfs_wb_folio(struct inode *inode, struct folio *folio);
int nfs_wb_folio_cancel(struct inode *inode, struct folio *folio);
extern int nfs_commit_inode(struct inode *, int);
extern struct nfs_commit_data *nfs_commitdata_alloc(void);

79
include/linux/nfs_page.h
View File

@ -25,6 +25,7 @@
enum {
PG_BUSY = 0, /* nfs_{un}lock_request */
PG_MAPPED, /* page private set for buffered io */
PG_FOLIO, /* Tracking a folio (unset for O_DIRECT) */
PG_CLEAN, /* write succeeded */
PG_COMMIT_TO_DS, /* used by pnfs layouts */
PG_INODE_REF, /* extra ref held by inode when in writeback */
@ -41,7 +42,10 @@ enum {
struct nfs_inode;
struct nfs_page {
struct list_head wb_list; /* Defines state of page: */
struct page *wb_page; /* page to read in/write out */
union {
struct page *wb_page; /* page to read in/write out */
struct folio *wb_folio;
};
struct nfs_lock_context *wb_lock_context; /* lock context info */
pgoff_t wb_index; /* Offset >> PAGE_SHIFT */
unsigned int wb_offset, /* Offset & ~PAGE_MASK */
@ -117,10 +121,15 @@ struct nfs_pageio_descriptor {
#define NFS_WBACK_BUSY(req) (test_bit(PG_BUSY,&(req)->wb_flags))
extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx,
struct page *page,
unsigned int offset,
unsigned int count);
extern struct nfs_page *nfs_page_create_from_page(struct nfs_open_context *ctx,
struct page *page,
unsigned int pgbase,
loff_t offset,
unsigned int count);
extern struct nfs_page *nfs_page_create_from_folio(struct nfs_open_context *ctx,
struct folio *folio,
unsigned int offset,
unsigned int count);
extern void nfs_release_request(struct nfs_page *);
@ -153,6 +162,66 @@ extern int nfs_page_set_headlock(struct nfs_page *req);
extern void nfs_page_clear_headlock(struct nfs_page *req);
extern bool nfs_async_iocounter_wait(struct rpc_task *, struct nfs_lock_context *);
/**
* nfs_page_to_folio - Retrieve a struct folio for the request
* @req: pointer to a struct nfs_page
*
* If a folio was assigned to @req, then return it, otherwise return NULL.
*/
static inline struct folio *nfs_page_to_folio(const struct nfs_page *req)
{
if (test_bit(PG_FOLIO, &req->wb_flags))
return req->wb_folio;
return NULL;
}
/**
* nfs_page_to_page - Retrieve a struct page for the request
* @req: pointer to a struct nfs_page
* @pgbase: folio byte offset
*
* Return the page containing the byte that is at offset @pgbase relative
* to the start of the folio.
* Note: The request starts at offset @req->wb_pgbase.
*/
static inline struct page *nfs_page_to_page(const struct nfs_page *req,
size_t pgbase)
{
struct folio *folio = nfs_page_to_folio(req);
if (folio == NULL)
return req->wb_page;
return folio_page(folio, pgbase >> PAGE_SHIFT);
}
/**
* nfs_page_to_inode - Retrieve an inode for the request
* @req: pointer to a struct nfs_page
*/
static inline struct inode *nfs_page_to_inode(const struct nfs_page *req)
{
struct folio *folio = nfs_page_to_folio(req);
if (folio == NULL)
return page_file_mapping(req->wb_page)->host;
return folio_file_mapping(folio)->host;
}
/**
* nfs_page_max_length - Retrieve the maximum possible length for a request
* @req: pointer to a struct nfs_page
*
* Returns the maximum possible length of a request
*/
static inline size_t nfs_page_max_length(const struct nfs_page *req)
{
struct folio *folio = nfs_page_to_folio(req);
if (folio == NULL)
return PAGE_SIZE;
return folio_size(folio);
}
/*
* Lock the page of an asynchronous request
*/

2
net/sunrpc/clnt.c
View File

@ -3350,6 +3350,8 @@ rpc_clnt_swap_deactivate_callback(struct rpc_clnt *clnt,
void
rpc_clnt_swap_deactivate(struct rpc_clnt *clnt)
{
while (clnt != clnt->cl_parent)
clnt = clnt->cl_parent;
if (atomic_dec_if_positive(&clnt->cl_swapper) == 0)
rpc_clnt_iterate_for_each_xprt(clnt,
rpc_clnt_swap_deactivate_callback, NULL);

8
net/sunrpc/sysfs.c
View File

@ -36,7 +36,7 @@ rpc_sysfs_object_child_ns_type(const struct kobject *kobj)
return &net_ns_type_operations;
}
static struct kobj_type rpc_sysfs_object_type = {
static const struct kobj_type rpc_sysfs_object_type = {
.release = rpc_sysfs_object_release,
.sysfs_ops = &kobj_sysfs_ops,
.child_ns_type = rpc_sysfs_object_child_ns_type,
@ -427,20 +427,20 @@ static struct attribute *rpc_sysfs_xprt_switch_attrs[] = {
};
ATTRIBUTE_GROUPS(rpc_sysfs_xprt_switch);
static struct kobj_type rpc_sysfs_client_type = {
static const struct kobj_type rpc_sysfs_client_type = {
.release = rpc_sysfs_client_release,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_client_namespace,
};
static struct kobj_type rpc_sysfs_xprt_switch_type = {
static const struct kobj_type rpc_sysfs_xprt_switch_type = {
.release = rpc_sysfs_xprt_switch_release,
.default_groups = rpc_sysfs_xprt_switch_groups,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_xprt_switch_namespace,
};
static struct kobj_type rpc_sysfs_xprt_type = {
static const struct kobj_type rpc_sysfs_xprt_type = {
.release = rpc_sysfs_xprt_release,
.default_groups = rpc_sysfs_xprt_groups,
.sysfs_ops = &kobj_sysfs_ops,