From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
===============
commit 6f18493e541c690169c3b1479d47d95f624161cf upstream.
and lock the right list there
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Acked-by: NeilBrown <neilb@xxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
fs/dcache.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index 11ded5b0b853..9a5e9082feb1 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2623,6 +2623,12 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon)
dentry->d_parent = dentry;
list_del_init(&dentry->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_child, &dparent->d_subdirs);
write_seqcount_end(&dentry->d_seq);
@@ -2677,7 +2683,6 @@ 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
--
2.11.0
--
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