Commit f55fefd1 authored Oct 30, 2014 by Jan Kara Committed by Dave Chinner Oct 30, 2014

mm: Remove false WARN_ON from pagecache_isize_extended()



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>

parent 7a19dee1

mm/truncate.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -755,7 +755,6 @@ 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)