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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2019-09-17 23:31:27 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-09-17 23:31:27 -0400 |
| commit | 850d71acd52cd331474116fbd60cf8b3f3ded93e (patch) | |
| tree | a4e4412794927eb053a440769510c453d046c43d /fs/autofs/autofs_i.h | |
| parent | autofs_dir_rmdir(): check ino->count for deciding whether it's empty... (diff) | |
| download | linux-dev-850d71acd52cd331474116fbd60cf8b3f3ded93e.tar.xz linux-dev-850d71acd52cd331474116fbd60cf8b3f3ded93e.zip | |
autofs: don't bother with atomics for ino->count
All writers are serialized on inode->i_rwsem. So are the readers
outside of expire.c. And the readers in expire.c are in the
code that really doesn't care about narrow races - it's looking
for expiry candidates and its callers have to cope with the
possibility of a good candidate becoming busy right under them.
No point bothering with atomic operations - just use int and
mark the non-serialized readers with READ_ONCE().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/autofs/autofs_i.h')
| -rw-r--r-- | fs/autofs/autofs_i.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h index 8bcec8dcabb6..054f97b07754 100644 --- a/fs/autofs/autofs_i.h +++ b/fs/autofs/autofs_i.h @@ -63,7 +63,7 @@ struct autofs_info { struct autofs_sb_info *sbi; unsigned long last_used; - atomic_t count; + int count; kuid_t uid; kgid_t gid; |