diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-09-04 14:31:00 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-04 14:31:00 +0200 |
| commit | 59f979455d7209171ab10a72c8df5c2512976cb4 (patch) | |
| tree | c4c7fc48bd79bf8acbe848a1b979fa9e8ab4ac6a /fs/autofs4/expire.c | |
| parent | b9bb50db9126c4ccad78af2dfb77277ca17c9b64 (diff) | |
| parent | 9450d57eab5cad36774c297da123062744472588 (diff) | |
Merge branch 'sched/urgent' into sched/core
Merge in the current fixes branch, we are going to apply dependent patches.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/autofs4/expire.c')
| -rw-r--r-- | fs/autofs4/expire.c | 36 |
1 files changed, 13 insertions, 23 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 1feb68ecef9..842d00048a6 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -94,25 +94,21 @@ static struct dentry *get_next_positive_subdir(struct dentry *prev, { struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb); struct list_head *next; - struct dentry *p, *q; + struct dentry *q; spin_lock(&sbi->lookup_lock); + spin_lock(&root->d_lock); - if (prev == NULL) { - spin_lock(&root->d_lock); + if (prev) + next = prev->d_u.d_child.next; + else { prev = dget_dlock(root); next = prev->d_subdirs.next; - p = prev; - goto start; } - p = prev; - spin_lock(&p->d_lock); -again: - next = p->d_u.d_child.next; -start: +cont: if (next == &root->d_subdirs) { - spin_unlock(&p->d_lock); + spin_unlock(&root->d_lock); spin_unlock(&sbi->lookup_lock); dput(prev); return NULL; @@ -121,16 +117,15 @@ start: q = list_entry(next, struct dentry, d_u.d_child); spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED); - /* Negative dentry - try next */ - if (!simple_positive(q)) { - spin_unlock(&p->d_lock); - lock_set_subclass(&q->d_lock.dep_map, 0, _RET_IP_); - p = q; - goto again; + /* Already gone or negative dentry (under construction) - try next */ + if (q->d_count == 0 || !simple_positive(q)) { + spin_unlock(&q->d_lock); + next = q->d_u.d_child.next; + goto cont; } dget_dlock(q); spin_unlock(&q->d_lock); - spin_unlock(&p->d_lock); + spin_unlock(&root->d_lock); spin_unlock(&sbi->lookup_lock); dput(prev); @@ -404,11 +399,6 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb, DPRINTK("checking mountpoint %p %.*s", dentry, (int)dentry->d_name.len, dentry->d_name.name); - /* Path walk currently on this dentry? */ - ino_count = atomic_read(&ino->count) + 2; - if (dentry->d_count > ino_count) - goto next; - /* Can we umount this guy */ if (autofs4_mount_busy(mnt, dentry)) goto next; |