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authorJani Nikula <jani.nikula@intel.com>2017-09-04 21:40:34 +0300
committerJani Nikula <jani.nikula@intel.com>2017-09-04 21:40:34 +0300
commitd149d6ae17197ce23e2cd6bc5fcdacf7b593e55e (patch)
tree2fb8d66199080f6d7b41690f6e8616ccd79a1943 /kernel/futex.c
parentafe722bee4bf8afc88c6ff7d6f781515d9428595 (diff)
parent7846b12fe0b5feab5446d892f41b5140c1419109 (diff)
downloadlinux-d149d6ae17197ce23e2cd6bc5fcdacf7b593e55e.tar.bz2
Merge drm-upstream/drm-next into drm-intel-next-queued
Catch up with upstream while it's easy. Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'kernel/futex.c')
-rw-r--r--kernel/futex.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index 16dbe4c93895..f50b434756c1 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -670,13 +670,14 @@ again:
* this reference was taken by ihold under the page lock
* pinning the inode in place so i_lock was unnecessary. The
* only way for this check to fail is if the inode was
- * truncated in parallel so warn for now if this happens.
+ * truncated in parallel which is almost certainly an
+ * application bug. In such a case, just retry.
*
* We are not calling into get_futex_key_refs() in file-backed
* cases, therefore a successful atomic_inc return below will
* guarantee that get_futex_key() will still imply smp_mb(); (B).
*/
- if (WARN_ON_ONCE(!atomic_inc_not_zero(&inode->i_count))) {
+ if (!atomic_inc_not_zero(&inode->i_count)) {
rcu_read_unlock();
put_page(page);