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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-07 14:36:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-07 14:36:57 -0700
commitdc0755cdb16cb129c4054c85d62bce83a18bcbcf (patch)
tree17f585ce18524ec029cb1169cdba256c83288101 /fs/namespace.c
parentc7c4591db64dbd1e504bc4e2806d7ef290a3c81b (diff)
parentf0d3b3ded999daae1cf451d051018038c0a05bae (diff)
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile 2 (of many) from Al Viro: "Mostly Miklos' series this time" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: constify dcache.c inlined helpers where possible fuse: drop dentry on failed revalidate fuse: clean up return in fuse_dentry_revalidate() fuse: use d_materialise_unique() sysfs: use check_submounts_and_drop() nfs: use check_submounts_and_drop() gfs2: use check_submounts_and_drop() afs: use check_submounts_and_drop() vfs: check unlinked ancestors before mount vfs: check submounts and drop atomically vfs: add d_walk() vfs: restructure d_genocide()
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index ef69fa5d2e5b..fc2b5226278d 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -611,6 +611,7 @@ static struct mountpoint *new_mountpoint(struct dentry *dentry)
{
struct list_head *chain = mountpoint_hashtable + hash(NULL, dentry);
struct mountpoint *mp;
+ int ret;
list_for_each_entry(mp, chain, m_hash) {
if (mp->m_dentry == dentry) {
@@ -626,14 +627,12 @@ static struct mountpoint *new_mountpoint(struct dentry *dentry)
if (!mp)
return ERR_PTR(-ENOMEM);
- spin_lock(&dentry->d_lock);
- if (d_unlinked(dentry)) {
- spin_unlock(&dentry->d_lock);
+ ret = d_set_mounted(dentry);
+ if (ret) {
kfree(mp);
- return ERR_PTR(-ENOENT);
+ return ERR_PTR(ret);
}
- dentry->d_flags |= DCACHE_MOUNTED;
- spin_unlock(&dentry->d_lock);
+
mp->m_dentry = dentry;
mp->m_count = 1;
list_add(&mp->m_hash, chain);