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linux-stable/fs
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Chuck Lever 4a0e73e635 NFSD: Leave open files out of the filecache LRU 
There have been reports of problems when running fstests generic/531
against Linux NFS servers with NFSv4. The NFS server that hosts the
test's SCRATCH_DEV suffers from CPU soft lock-ups during the test.
Analysis shows that:

fs/nfsd/filecache.c
 482                 ret = list_lru_walk(&nfsd_file_lru,
 483                                 nfsd_file_lru_cb,
 484                                 &head, LONG_MAX);

causes nfsd_file_gc() to walk the entire length of the filecache LRU
list every time it is called (which is quite frequently). The walk
holds a spinlock the entire time that prevents other nfsd threads
from accessing the filecache.

What's more, for NFSv4 workloads, none of the items that are visited
during this walk may be evicted, since they are all files that are
held OPEN by NFS clients.

Address this by ensuring that open files are not kept on the LRU
list.

Reported-by: Frank van der Linden <fllinden@amazon.com>
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=386
Suggested-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-07-29 20:10:08 -04:00
..
9p
9p: fix EBADF errors in cached mode
2022-06-17 06:03:30 +09:00
adfs
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
affs
affs: Convert affs to read_folio
2022-05-09 16:21:44 -04:00
afs
netfs: do not unlock and put the folio twice
2022-07-14 10:10:12 +02:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
befs: Convert befs to read_folio
2022-05-09 16:21:45 -04:00
bfs
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
btrfs
for-5.19-rc7-tag
2022-07-16 13:48:55 -07:00
cachefiles
cachefiles: narrow the scope of flushed requests when releasing fd
2022-07-05 16:12:21 +01:00
ceph
netfs: do not unlock and put the folio twice
2022-07-14 10:10:12 +02:00
cifs
smb3: workaround negprot bug in some Samba servers
2022-07-13 19:59:47 -05:00
coda
coda: Convert coda to read_folio
2022-05-09 16:21:45 -04:00
configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-02-22 18:30:28 +01:00
cramfs
cramfs: Convert cramfs to read_folio
2022-05-09 16:21:45 -04:00
crypto
fscrypt: add new helper functions for test_dummy_encryption
2022-05-09 16:18:54 -07:00
debugfs
debugfs: Document that debugfs_create functions need not be error checked
2022-02-25 11:56:13 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-01-24 14:17:02 +01:00
dlm
dlm: use kref_put_lock in __put_lkb
2022-05-02 11:23:49 -05:00
ecryptfs
ecryptfs: Convert ecryptfs to read_folio
2022-05-09 16:21:45 -04:00
efivarfs
…
efs
efs: Convert efs symlinks to read_folio
2022-05-09 16:21:45 -04:00
erofs
Changes since last update:
2022-06-01 11:54:29 -07:00
exfat
exfat: use updated exfat_chain directly during renaming
2022-06-09 21:26:32 +09:00
exportfs
exportfs: support idmapped mounts
2022-04-28 16:31:10 +02:00
ext2
ext2: fix fs corruption when trying to remove a non-empty directory with IO error
2022-06-16 10:55:45 +02:00
ext4
ext4: fix a doubled word "need" in a comment
2022-06-18 19:36:20 -04:00
f2fs
f2fs: do not count ENOENT for error case
2022-06-21 08:29:56 -07:00
fat
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
freevxfs
SPDX changes for 5.19-rc1
2022-06-03 10:34:34 -07:00
fscache
fscache: Fix invalidation/lookup race
2022-07-05 16:12:55 +01:00
fuse
libnvdimm for 5.19
2022-05-27 15:49:30 -07:00
gfs2
Page cache changes for 5.19
2022-05-24 19:55:07 -07:00
hfs
fs: Change try_to_free_buffers() to take a folio
2022-05-09 23:12:34 -04:00
hfsplus
fs: Change try_to_free_buffers() to take a folio
2022-05-09 23:12:34 -04:00
hostfs
hostfs: Convert hostfs to read_folio
2022-05-09 16:21:45 -04:00
hpfs
hpfs: Convert symlinks to read_folio
2022-05-09 16:21:45 -04:00
hugetlbfs
hugetlbfs: zero partial pages during fallocate hole punch
2022-06-16 19:11:32 -07:00
iomap
Page cache changes for 5.19
2022-05-24 19:55:07 -07:00
isofs
isofs: Convert symlinks and zisofs to read_folio
2022-05-09 16:21:45 -04:00
jbd2
fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment
2022-06-16 10:36:09 -04:00
jffs2
This pull request contains fixes for JFFS2, UBI and UBIFS
2022-06-03 14:42:24 -07:00
jfs
JFS: One bug fix and some code cleanup
2022-05-27 15:59:21 -07:00
kernfs
kernfs: Separate kernfs_pr_cont_buf and rename_lock.
2022-05-19 19:37:06 +02:00
ksmbd
vfs: fix copy_file_range() regression in cross-fs copies
2022-06-30 15:16:38 -07:00
lockd
NLM: Defend against file_lock changes after vfs_test_lock()
2022-07-29 20:08:56 -04:00
minix
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
netfs
netfs: do not unlock and put the folio twice
2022-07-14 10:10:12 +02:00
nfs
NFSv4: Add an fattr allocation to _nfs4_discover_trunking()
2022-06-30 16:13:00 -04:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
NFSD: Leave open files out of the filecache LRU
2022-07-29 20:10:08 -04:00
nilfs2
nilfs2: fix incorrect masking of permission flags for symlinks
2022-07-03 15:42:33 -07:00
nls
…
notify
fanotify: refine the validation checks on non-dir inode mask
2022-06-28 11:18:13 +02:00
ntfs
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
ntfs3
Ntfs3 for 5.19
2022-06-03 16:57:16 -07:00
ocfs2
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
omfs
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
openpromfs
fs: allocate inode by using alloc_inode_sb()
2022-03-22 15:57:03 -07:00
orangefs
orangefs: Convert to free_folio
2022-05-09 23:12:53 -04:00
overlayfs
ovl: turn of SB_POSIXACL with idmapped layers temporarily
2022-07-08 15:48:31 +02:00
proc
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
pstore
pstore: Don't use semaphores in always-atomic-context code
2022-03-15 11:08:23 -07:00
qnx4
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
qnx6
fs: Convert mpage_readpage to mpage_read_folio
2022-05-09 16:21:44 -04:00
quota
quota: Prevent memory allocation recursion while holding dq_lock
2022-06-06 10:08:10 +02:00
ramfs
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
reiserfs
fs: Change try_to_free_buffers() to take a folio
2022-05-09 23:12:34 -04:00
romfs
romfs: Convert romfs to read_folio
2022-05-09 16:21:46 -04:00
smbfs_common
Add various fsctl structs
2022-05-23 20:24:12 -05:00
squashfs
Page cache changes for 5.19
2022-05-24 19:55:07 -07:00
sysfs
kobject: kobj_type: remove default_attrs
2022-04-05 15:39:19 +02:00
sysv
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
tracefs
tracefs: Fix syntax errors in comments
2022-06-17 19:01:28 -04:00
ubifs
This pull request contains fixes for JFFS2, UBI and UBIFS
2022-06-03 14:42:24 -07:00
udf
Page cache changes for 5.19
2022-05-24 19:55:07 -07:00
ufs
fs: Convert block_read_full_page() to block_read_full_folio()
2022-05-09 16:21:44 -04:00
unicode
kbuild: unify cmd_copy and cmd_shipped
2022-02-14 10:37:32 +09:00
vboxsf
vboxsf: Convert vboxsf to read_folio
2022-05-09 16:21:46 -04:00
verity
Page cache changes for 5.19
2022-05-24 19:55:07 -07:00
xfs
xfs: prevent a UAF when log IO errors race with unmount
2022-07-01 09:09:52 -07:00
zonefs
zonefs: fix zonefs_iomap_begin() for reads
2022-06-08 19:13:55 +09:00
aio.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2022-04-01 19:57:03 -07:00
anon_inodes.c
fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure()
2021-09-19 22:35:37 -04:00
attr.c
fs: account for group membership
2022-06-14 12:18:47 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
coredump: Snapshot the vmas in do_coredump
2022-03-08 12:55:29 -06:00
binfmt_elf_test.c
binfmt_elf: Introduce KUnit test
2022-03-03 20:38:56 -08:00
binfmt_elf.c
revert "fs/binfmt_elf: use PT_LOAD p_align values for static PIE"
2022-04-15 14:49:56 -07:00
binfmt_flat.c
binfmt_flat: Remove shared library support
2022-04-22 10:57:18 -07:00
binfmt_misc.c
Fix regression due to "fs: move binfmt_misc sysctl to its own file"
2022-02-09 09:50:02 -08:00
binfmt_script.c
…
buffer.c
fs: Convert drop_buffers() to use a folio
2022-05-09 23:12:34 -04:00
char_dev.c
…
compat_binfmt_elf.c
binfmt_elf: Introduce KUnit test
2022-03-03 20:38:56 -08:00
coredump.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
d_path.c
d_path: fix Kernel doc validator complaining
2021-11-06 13:30:32 -07:00
dax.c
libnvdimm for 5.19
2022-05-27 15:49:30 -07:00
dcache.c
mm: dcache: use kmem_cache_alloc_lru() to allocate dentry
2022-03-22 15:57:03 -07:00
direct-io.c
direct-io: remove random prefetches
2022-04-17 19:50:02 -06:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
eventpoll: simplify sysctl declaration with register_sysctl()
2022-01-22 08:33:35 +02:00
exec.c
fix race between exit_itimers() and /proc/pid/timers
2022-07-11 09:52:59 -07:00
fcntl.c
VFS: add FMODE_CAN_ODIRECT file flag
2022-05-09 18:20:49 -07:00
fhandle.c
…
file_table.c
Descriptor handling cleanups
2022-06-04 18:52:00 -07:00
file.c
fix the breakage in close_fd_get_file() calling conventions change
2022-06-05 15:03:03 -04:00
filesystems.c
…
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-18 09:23:19 +02:00
fs_parser.c
fs_parse: allow parameter value to be empty
2021-12-09 14:09:36 -05:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: Fix inode->i_io_list not be protected by inode->i_lock error
2022-06-06 09:54:30 +02:00
fsopen.c
uninline may_mount() and don't opencode it in fspick(2)/fsopen(2)
2022-05-19 23:25:10 -04:00
init.c
…
inode.c
writeback: Fix inode->i_io_list not be protected by inode->i_lock error
2022-06-06 09:54:30 +02:00
internal.h
Cleanups (and one fix) around struct mount handling.
2022-06-04 19:00:05 -07:00
io_uring.c
io_uring: check that we have a file table when allocating update slots
2022-07-09 07:02:10 -06:00
io-wq.c
io-wq: use __set_notify_signal() to wake workers
2022-04-30 08:39:54 -06:00
io-wq.h
io_uring: add support for IORING_ASYNC_CANCEL_ALL
2022-04-24 18:18:18 -06:00
ioctl.c
Fixes for 5.18-rc1:
2022-04-01 19:35:56 -07:00
Kconfig
mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*
2022-04-28 23:16:15 -07:00
Kconfig.binfmt
m68knommu: changes for linux 5.19
2022-05-30 10:56:18 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
fs: Convert simple_readpage to simple_read_folio
2022-05-09 16:21:44 -04:00
locks.c
fs/lock: add 2 callbacks to lock_manager_operations to resolve conflict
2022-05-19 12:25:39 -04:00
Makefile
Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the
2022-02-01 11:13:24 -08:00
mbcache.c
…
mount.h
…
mpage.c
fs: Change try_to_free_buffers() to take a folio
2022-05-09 23:12:34 -04:00
namei.c
Several cleanups in fs/namei.c.
2022-06-04 19:07:15 -07:00
namespace.c
Cleanups (and one fix) around struct mount handling.
2022-06-04 19:00:05 -07:00
no-block.c
…
nsfs.c
…
open.c
RISC-V Patches for the 5.19 Merge Window, Part 1
2022-05-31 14:10:54 -07:00
pipe.c
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
fs: fix acl translation
2022-04-19 10:19:02 -07:00
proc_namespace.c
fs: add is_idmapped_mnt() helper
2021-12-03 18:44:06 +01:00
read_write.c
vfs: fix copy_file_range() regression in cross-fs copies
2022-06-30 15:16:38 -07:00
readdir.c
…
remap_range.c
Revert "vf/remap: return the amount of bytes actually deduplicated"
2022-07-14 15:35:24 -07:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-11 09:03:05 -08:00
seq_file.c
rxrpc: Fix locking issue
2022-05-22 21:03:01 +01:00
signalfd.c
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
splice.c
mm: Convert remove_mapping() to take a folio
2022-03-21 12:59:01 -04:00
stack.c
…
stat.c
RISC-V Patches for the 5.19 Merge Window, Part 1
2022-05-31 14:10:54 -07:00
statfs.c
…
super.c
block: add a bdev_stable_writes helper
2022-04-17 19:49:59 -06:00
sync.c
riscv: compat: syscall: Add compat_sys_call_table implementation
2022-04-26 13:36:25 -07:00
sysctls.c
fs: move namespace sysctls and declare fs base directory
2022-01-22 08:33:36 +02:00
timerfd.c
…
userfaultfd.c
mm/uffd: enable write protection for shmem & hugetlbfs
2022-05-13 07:20:11 -07:00
utimes.c
…
xattr.c
fs: split off do_getxattr from getxattr
2022-04-24 18:18:37 -06:00