linux/fs/ocfs2
Mauricio Faria de Oliveira 45680967ee ocfs2: ratelimit the 'max lookup times reached' notice
Running stress-ng on ocfs2 completely fills the kernel log with 'max
lookup times reached, filesystem may have nested directories.'

Let's ratelimit this message as done with others in the code.

Test-case:

  # mkfs.ocfs2 --mount local $DEV
  # mount $DEV $MNT
  # cd $MNT

  # dmesg -C
  # stress-ng --dirdeep 1 --dirdeep-ops 1000
  # dmesg | grep -c 'max lookup times reached'

Before:

  # dmesg -C
  # stress-ng --dirdeep 1 --dirdeep-ops 1000
  ...
  stress-ng: info:  [11116] successful run completed in 3.03s

  # dmesg | grep -c 'max lookup times reached'
  967

After:

  # dmesg -C
  # stress-ng --dirdeep 1 --dirdeep-ops 1000
  ...
  stress-ng: info:  [739] successful run completed in 0.96s

  # dmesg | grep -c 'max lookup times reached'
  10

  # dmesg
  [  259.086086] ocfs2_check_if_ancestor: 1990 callbacks suppressed
  [  259.086092] (stress-ng-dirde,740,1):ocfs2_check_if_ancestor:1091 max lookup times reached, filesystem may have nested directories, src inode: 18007, dest inode: 17940.
  ...

Link: https://lkml.kernel.org/r/20201001224417.478263-1-mfo@canonical.com
Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 12:13:37 -08:00
..
cluster fs/ocfs2/cluster/tcp.c: remove unneeded break 2020-12-15 12:13:37 -08:00
dlm
dlmfs
acl.c
acl.h
alloc.c
alloc.h
aops.c
aops.h
blockcheck.c
blockcheck.h
buffer_head_io.c
buffer_head_io.h
dcache.c
dcache.h
dir.c
dir.h
dlmglue.c
dlmglue.h
export.c
export.h
extent_map.c
extent_map.h
file.c
file.h
filecheck.c
filecheck.h
heartbeat.c
heartbeat.h
inode.c
inode.h
ioctl.c
ioctl.h
journal.c
journal.h
Kconfig
localalloc.c
localalloc.h
locks.c
locks.h
Makefile
mmap.c
mmap.h
move_extents.c
move_extents.h
namei.c ocfs2: ratelimit the 'max lookup times reached' notice 2020-12-15 12:13:37 -08:00
namei.h
ocfs1_fs_compat.h
ocfs2.h
ocfs2_fs.h
ocfs2_ioctl.h
ocfs2_lockid.h
ocfs2_lockingver.h
ocfs2_trace.h
quota.h
quota_global.c
quota_local.c
refcounttree.c
refcounttree.h
reservations.c
reservations.h
resize.c
resize.h
slot_map.c
slot_map.h
stack_o2cb.c
stack_user.c
stackglue.c
stackglue.h
suballoc.c
suballoc.h
super.c
super.h
symlink.c
symlink.h
sysfile.c
sysfile.h
uptodate.c
uptodate.h
xattr.c
xattr.h