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nilfs2: convert DAT file to be folio-based

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Regarding the DAT, a metadata file that manages virtual block addresses,
convert the page-based implementation to a folio-based implementation.

Link: https://lkml.kernel.org/r/20241024092602.13395-7-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi 2024-10-24 18:25:40 +09:00 committed by Andrew Morton
parent f99de3d570
commit aac6925e20
1 changed files with 52 additions and 46 deletions
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98
fs/nilfs2/dat.c
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@ -89,15 +89,15 @@ int nilfs_dat_prepare_alloc(struct inode *dat, struct nilfs_palloc_req *req)
void nilfs_dat_commit_alloc(struct inode *dat, struct nilfs_palloc_req *req)
{
struct nilfs_dat_entry *entry;
void *kaddr;
size_t offset;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
entry->de_start = cpu_to_le64(NILFS_CNO_MIN);
entry->de_end = cpu_to_le64(NILFS_CNO_MAX);
entry->de_blocknr = cpu_to_le64(0);
kunmap_local(kaddr);
kunmap_local(entry);
nilfs_palloc_commit_alloc_entry(dat, req);
nilfs_dat_commit_entry(dat, req);
@ -113,15 +113,15 @@ static void nilfs_dat_commit_free(struct inode *dat,
struct nilfs_palloc_req *req)
{
struct nilfs_dat_entry *entry;
void *kaddr;
size_t offset;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
entry->de_start = cpu_to_le64(NILFS_CNO_MIN);
entry->de_end = cpu_to_le64(NILFS_CNO_MIN);
entry->de_blocknr = cpu_to_le64(0);
kunmap_local(kaddr);
kunmap_local(entry);
nilfs_dat_commit_entry(dat, req);
@ -143,14 +143,14 @@ void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req,
sector_t blocknr)
{
struct nilfs_dat_entry *entry;
void *kaddr;
size_t offset;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
entry->de_start = cpu_to_le64(nilfs_mdt_cno(dat));
entry->de_blocknr = cpu_to_le64(blocknr);
kunmap_local(kaddr);
kunmap_local(entry);
nilfs_dat_commit_entry(dat, req);
}
@ -160,19 +160,19 @@ int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req)
struct nilfs_dat_entry *entry;
__u64 start;
sector_t blocknr;
void *kaddr;
size_t offset;
int ret;
ret = nilfs_dat_prepare_entry(dat, req, 0);
if (ret < 0)
return ret;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
start = le64_to_cpu(entry->de_start);
blocknr = le64_to_cpu(entry->de_blocknr);
kunmap_local(kaddr);
kunmap_local(entry);
if (blocknr == 0) {
ret = nilfs_palloc_prepare_free_entry(dat, req);
@ -200,11 +200,11 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req,
struct nilfs_dat_entry *entry;
__u64 start, end;
sector_t blocknr;
void *kaddr;
size_t offset;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
end = start = le64_to_cpu(entry->de_start);
if (!dead) {
end = nilfs_mdt_cno(dat);
@ -212,7 +212,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req,
}
entry->de_end = cpu_to_le64(end);
blocknr = le64_to_cpu(entry->de_blocknr);
kunmap_local(kaddr);
kunmap_local(entry);
if (blocknr == 0)
nilfs_dat_commit_free(dat, req);
@ -225,14 +225,14 @@ void nilfs_dat_abort_end(struct inode *dat, struct nilfs_palloc_req *req)
struct nilfs_dat_entry *entry;
__u64 start;
sector_t blocknr;
void *kaddr;
size_t offset;
kaddr = kmap_local_page(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, req->pr_entry_nr,
req->pr_entry_bh);
entry = kmap_local_folio(req->pr_entry_bh->b_folio, offset);
start = le64_to_cpu(entry->de_start);
blocknr = le64_to_cpu(entry->de_blocknr);
kunmap_local(kaddr);
kunmap_local(entry);
if (start == nilfs_mdt_cno(dat) && blocknr == 0)
nilfs_palloc_abort_free_entry(dat, req);
@ -336,7 +336,7 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
{
struct buffer_head *entry_bh;
struct nilfs_dat_entry *entry;
void *kaddr;
size_t offset;
int ret;
ret = nilfs_palloc_get_entry_block(dat, vblocknr, 0, &entry_bh);
@ -359,21 +359,21 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
}
}
kaddr = kmap_local_page(entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, vblocknr, entry_bh);
entry = kmap_local_folio(entry_bh->b_folio, offset);
if (unlikely(entry->de_blocknr == cpu_to_le64(0))) {
nilfs_crit(dat->i_sb,
"%s: invalid vblocknr = %llu, [%llu, %llu)",
__func__, (unsigned long long)vblocknr,
(unsigned long long)le64_to_cpu(entry->de_start),
(unsigned long long)le64_to_cpu(entry->de_end));
kunmap_local(kaddr);
kunmap_local(entry);
brelse(entry_bh);
return -EINVAL;
}
WARN_ON(blocknr == 0);
entry->de_blocknr = cpu_to_le64(blocknr);
kunmap_local(kaddr);
kunmap_local(entry);
mark_buffer_dirty(entry_bh);
nilfs_mdt_mark_dirty(dat);
@ -407,7 +407,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
struct buffer_head *entry_bh, *bh;
struct nilfs_dat_entry *entry;
sector_t blocknr;
void *kaddr;
size_t offset;
int ret;
ret = nilfs_palloc_get_entry_block(dat, vblocknr, 0, &entry_bh);
@ -423,8 +423,8 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
}
}
kaddr = kmap_local_page(entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
offset = nilfs_palloc_entry_offset(dat, vblocknr, entry_bh);
entry = kmap_local_folio(entry_bh->b_folio, offset);
blocknr = le64_to_cpu(entry->de_blocknr);
if (blocknr == 0) {
ret = -ENOENT;
@ -433,7 +433,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
*blocknrp = blocknr;
out:
kunmap_local(kaddr);
kunmap_local(entry);
brelse(entry_bh);
return ret;
}
@ -442,11 +442,12 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned int visz,
size_t nvi)
{
struct buffer_head *entry_bh;
struct nilfs_dat_entry *entry;
struct nilfs_dat_entry *entry, *first_entry;
struct nilfs_vinfo *vinfo = buf;
__u64 first, last;
void *kaddr;
size_t offset;
unsigned long entries_per_block = NILFS_MDT(dat)->mi_entries_per_block;
unsigned int entry_size = NILFS_MDT(dat)->mi_entry_size;
int i, j, n, ret;
for (i = 0; i < nvi; i += n) {
@ -454,23 +455,28 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned int visz,
0, &entry_bh);
if (ret < 0)
return ret;
kaddr = kmap_local_page(entry_bh->b_page);
/* last virtual block number in this block */
first = vinfo->vi_vblocknr;
first = div64_ul(first, entries_per_block);
first *= entries_per_block;
/* first virtual block number in this block */
last = first + entries_per_block - 1;
/* last virtual block number in this block */
offset = nilfs_palloc_entry_offset(dat, first, entry_bh);
first_entry = kmap_local_folio(entry_bh->b_folio, offset);
for (j = i, n = 0;
j < nvi && vinfo->vi_vblocknr >= first &&
vinfo->vi_vblocknr <= last;
j++, n++, vinfo = (void *)vinfo + visz) {
entry = nilfs_palloc_block_get_entry(
dat, vinfo->vi_vblocknr, entry_bh, kaddr);
entry = (void *)first_entry +
(vinfo->vi_vblocknr - first) * entry_size;
vinfo->vi_start = le64_to_cpu(entry->de_start);
vinfo->vi_end = le64_to_cpu(entry->de_end);
vinfo->vi_blocknr = le64_to_cpu(entry->de_blocknr);
}
kunmap_local(kaddr);
kunmap_local(first_entry);
brelse(entry_bh);
}