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| author | NeilBrown <neilb@suse.de> | 2014-10-13 15:52:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-14 02:18:16 +0200 |
| commit | 6ece08e6187a62dd5bdf7c49539980571922c551 (patch) | |
| tree | 8fd68d91e7feb62145c66c89c2fe6fa459fd9df8 /fs | |
| parent | a5d1dba1430f059d5bb4bf1d95274ff01ccad3d9 (diff) | |
| download | linux-exynos-6ece08e6187a62dd5bdf7c49539980571922c551.tar.gz linux-exynos-6ece08e6187a62dd5bdf7c49539980571922c551.tar.bz2 linux-exynos-6ece08e6187a62dd5bdf7c49539980571922c551.zip | |
autofs4: make "autofs4_can_expire" idempotent.
Have a "test" function change the value it is testing can be confusing,
particularly as a future patch will be calling this function twice.
So move the update for 'last_used' to avoid repeat expiry to the place
where the final determination on what to expire is known.
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Ian Kent <raven@themaw.net>
Tested-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/autofs4/expire.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index d03bedc7369f..af141fc8cfe6 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -30,12 +30,6 @@ static inline int autofs4_can_expire(struct dentry *dentry, /* Too young to die */ if (!timeout || time_after(ino->last_used + timeout, now)) return 0; - - /* update last_used here :- - - obviously makes sense if it is in use now - - less obviously, prevents rapid-fire expire - attempts if expire fails the first time */ - ino->last_used = now; } return 1; } @@ -535,6 +529,8 @@ int autofs4_expire_run(struct super_block *sb, spin_lock(&sbi->fs_lock); ino = autofs4_dentry_ino(dentry); + /* avoid rapid-fire expire attempts if expiry fails */ + ino->last_used = now; ino->flags &= ~AUTOFS_INF_EXPIRING; complete_all(&ino->expire_complete); spin_unlock(&sbi->fs_lock); @@ -561,6 +557,8 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt, ret = autofs4_wait(sbi, dentry, NFY_EXPIRE); spin_lock(&sbi->fs_lock); + /* avoid rapid-fire expire attempts if expiry fails */ + ino->last_used = now; ino->flags &= ~AUTOFS_INF_EXPIRING; complete_all(&ino->expire_complete); spin_unlock(&sbi->fs_lock); |