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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-09-11 22:55:50 (GMT) |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-09-14 02:14:03 (GMT) |
| commit | 6f18493e541c690169c3b1479d47d95f624161cf (patch) | |
| tree | efd828b382e5dc61ad510fdf26db7c819e91fce4 | |
| parent | f77ced6637a18d4f543458a112881776a6b7fa8c (diff) | |
| download | linux-6f18493e541c690169c3b1479d47d95f624161cf.tar.xz | |
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
and lock the right list there
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/dcache.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index d30ce69..5c6e71d 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2656,6 +2656,12 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon) dentry->d_parent = dentry; list_del_init(&dentry->d_u.d_child); anon->d_parent = dparent; + if (likely(!d_unhashed(anon))) { + hlist_bl_lock(&anon->d_sb->s_anon); + __hlist_bl_del(&anon->d_hash); + anon->d_hash.pprev = NULL; + hlist_bl_unlock(&anon->d_sb->s_anon); + } list_move(&anon->d_u.d_child, &dparent->d_subdirs); write_seqcount_end(&dentry->d_seq); @@ -2714,7 +2720,6 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) write_seqlock(&rename_lock); __d_materialise_dentry(dentry, new); write_sequnlock(&rename_lock); - __d_drop(new); _d_rehash(new); spin_unlock(&new->d_lock); spin_unlock(&inode->i_lock); @@ -2778,7 +2783,6 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) * could splice into our tree? */ __d_materialise_dentry(dentry, alias); write_sequnlock(&rename_lock); - __d_drop(alias); goto found; } else { /* Nope, but we must(!) avoid directory |