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authorJan Kara <jack@suse.cz>2014-10-30 10:35:00 +1100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-14 09:00:11 -0800
commitda357d7aab5e47f5a9bd806980f4cbb1e76f523d (patch)
tree8df7bcadb9ba7ad5a6f8d4fc7297fee0060249d6
parent09eea6d2a92e092897d6767988e21186d2ed781e (diff)
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mm: Remove false WARN_ON from pagecache_isize_extended()
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@suse.cz> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--mm/truncate.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 855c38cd09be..ac18edc30649 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -649,7 +649,6 @@ 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)