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| author | Ian Kent <raven@themaw.net> | 2011-03-25 01:51:31 +0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-24 14:54:35 -0400 |
| commit | e7854723d0f3626f260c880d8db8e5136f29db19 (patch) | |
| tree | 3fe4f138922f51d8214ccc6bd2fb9ed4dfa1f234 /fs/autofs4/expire.c | |
| parent | 83fb96bfc792e5ca693e53f7fd878d51b8493da8 (diff) | |
| download | linux-e7854723d0f3626f260c880d8db8e5136f29db19.tar.gz linux-e7854723d0f3626f260c880d8db8e5136f29db19.tar.bz2 linux-e7854723d0f3626f260c880d8db8e5136f29db19.zip | |
autofs4 - remove autofs4_lock
The autofs4_lock introduced by the rcu-walk changes has unnecessarily
broad scope. The locking is better handled by the per-autofs super
block lookup_lock.
Signed-off-by: Ian Kent <raven@themaw.net>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/autofs4/expire.c')
| -rw-r--r-- | fs/autofs4/expire.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index bc482e07b925..450f529a4eae 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -92,10 +92,11 @@ done: static struct dentry *get_next_positive_subdir(struct dentry *prev, struct dentry *root) { + struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb); struct list_head *next; struct dentry *p, *q; - spin_lock(&autofs4_lock); + spin_lock(&sbi->lookup_lock); if (prev == NULL) { spin_lock(&root->d_lock); @@ -112,7 +113,7 @@ again: start: if (next == &root->d_subdirs) { spin_unlock(&p->d_lock); - spin_unlock(&autofs4_lock); + spin_unlock(&sbi->lookup_lock); dput(prev); return NULL; } @@ -129,7 +130,7 @@ start: dget_dlock(q); spin_unlock(&q->d_lock); spin_unlock(&p->d_lock); - spin_unlock(&autofs4_lock); + spin_unlock(&sbi->lookup_lock); dput(prev); @@ -142,13 +143,14 @@ start: static struct dentry *get_next_positive_dentry(struct dentry *prev, struct dentry *root) { + struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb); struct list_head *next; struct dentry *p, *ret; if (prev == NULL) return dget(root); - spin_lock(&autofs4_lock); + spin_lock(&sbi->lookup_lock); relock: p = prev; spin_lock(&p->d_lock); @@ -160,7 +162,7 @@ again: if (p == root) { spin_unlock(&p->d_lock); - spin_unlock(&autofs4_lock); + spin_unlock(&sbi->lookup_lock); dput(prev); return NULL; } @@ -190,7 +192,7 @@ again: dget_dlock(ret); spin_unlock(&ret->d_lock); spin_unlock(&p->d_lock); - spin_unlock(&autofs4_lock); + spin_unlock(&sbi->lookup_lock); dput(prev); @@ -459,13 +461,13 @@ found: ino->flags |= AUTOFS_INF_EXPIRING; init_completion(&ino->expire_complete); spin_unlock(&sbi->fs_lock); - spin_lock(&autofs4_lock); + spin_lock(&sbi->lookup_lock); spin_lock(&expired->d_parent->d_lock); spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED); list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child); spin_unlock(&expired->d_lock); spin_unlock(&expired->d_parent->d_lock); - spin_unlock(&autofs4_lock); + spin_unlock(&sbi->lookup_lock); return expired; } |