From: Jan Kara <jack@xxxxxxx> This patch has been added to the 3.12 stable tree. If you have any objections, please let us know. =============== commit f55fefd1a5a339b1bd08c120b93312d6eb64a9fb upstream. The WARN_ON checking whether i_mutex is held in pagecache_isize_extended() was wrong because some filesystems (e.g. XFS) use different locks for serialization of truncates / writes. So just remove the check. Signed-off-by: Jan Kara <jack@xxxxxxx> Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx> Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- mm/truncate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/truncate.c b/mm/truncate.c index 7dfb7c70fd4b..827ad8d2b5cd 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -697,7 +697,6 @@ void pagecache_isize_extended(struct inode *inode, loff_t from, loff_t to) struct page *page; pgoff_t index; - WARN_ON(!mutex_is_locked(&inode->i_mutex)); WARN_ON(to > inode->i_size); if (from >= to || bsize == PAGE_CACHE_SIZE) -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html