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Merge tag 'for-5.11/dm-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
[linux-2.6-microblaze.git]
/
fs
/
dcache.c
diff --git
a/fs/dcache.c
b/fs/dcache.c
index
ea04858
..
97e81a8
100644
(file)
--- a/
fs/dcache.c
+++ b/
fs/dcache.c
@@
-793,10
+793,17
@@
static inline bool fast_dput(struct dentry *dentry)
* a reference to the dentry and change that, but
* our work is done - we can leave the dentry
* around with a zero refcount.
* a reference to the dentry and change that, but
* our work is done - we can leave the dentry
* around with a zero refcount.
+ *
+ * Nevertheless, there are two cases that we should kill
+ * the dentry anyway.
+ * 1. free disconnected dentries as soon as their refcount
+ * reached zero.
+ * 2. free dentries if they should not be cached.
*/
smp_rmb();
d_flags = READ_ONCE(dentry->d_flags);
*/
smp_rmb();
d_flags = READ_ONCE(dentry->d_flags);
- d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST | DCACHE_DISCONNECTED;
+ d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST |
+ DCACHE_DISCONNECTED | DCACHE_DONTCACHE;
/* Nothing to do? Dropping the reference was all we needed? */
if (d_flags == (DCACHE_REFERENCED | DCACHE_LRU_LIST) && !d_unhashed(dentry))
/* Nothing to do? Dropping the reference was all we needed? */
if (d_flags == (DCACHE_REFERENCED | DCACHE_LRU_LIST) && !d_unhashed(dentry))