From 66cc8f8440666b4ef0996ec76d9a208f5b54970f Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 30 Oct 2014 10:35:00 +1100 Subject: [PATCH] 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 Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner Signed-off-by: Zefan Li --- mm/truncate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/truncate.c b/mm/truncate.c index 708a499c49a87..57625f7ed8e16 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -607,7 +607,6 @@ 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) -- 2.47.2