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| author | Ian Kent <raven@themaw.net> | 2006-06-25 05:48:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:01:18 -0700 |
| commit | f9022f66336b8ad680884d4810f1c421fff899e3 (patch) | |
| tree | 7b2607f0d726c3e14976564fde0f6a570f150625 /fs | |
| parent | a2f20c7c274b6241767330c902b3111b9326d901 (diff) | |
| download | linux-3.10-f9022f66336b8ad680884d4810f1c421fff899e3.tar.gz linux-3.10-f9022f66336b8ad680884d4810f1c421fff899e3.tar.bz2 linux-3.10-f9022f66336b8ad680884d4810f1c421fff899e3.zip | |
[PATCH] autofs4: need to invalidate children on tree mount expire
I've found a case where invalid dentrys in a mount tree, waiting to be
cleaned up by d_invalidate, prevent the expected expire.
In this case dentrys created during a lookup for which a mount fails or has
no entry in the mount map contribute to the d_count of the parent dentry.
These dentrys may not be invalidated prior to comparing the interanl usage
count of valid autofs dentrys against the dentry d_count which makes a
mount tree appear busy so it doesn't expire.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/autofs4/expire.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index b8ce02607d6..4456d1daa40 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -174,6 +174,12 @@ static int autofs4_tree_busy(struct vfsmount *mnt, struct autofs_info *ino = autofs4_dentry_ino(p); unsigned int ino_count = atomic_read(&ino->count); + /* + * Clean stale dentries below that have not been + * invalidated after a mount fail during lookup + */ + d_invalidate(p); + /* allow for dget above and top is already dgot */ if (p == top) ino_count += 2; |