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Date: Wed, 28 Jan 2015 12:10:33 +0800 From: lizf@...nel.org To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>, Dave Chinner <david@...morbit.com>, Zefan Li <lizefan@...wei.com> Subject: [PATCH 3.4 175/177] mm: Remove false WARN_ON from pagecache_isize_extended() From: Jan Kara <jack@...e.cz> 3.4.106-rc1 review patch. If anyone has any objections, please let me 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@...e.cz> Reviewed-by: Dave Chinner <dchinner@...hat.com> Signed-off-by: Dave Chinner <david@...morbit.com> Signed-off-by: Zefan Li <lizefan@...wei.com> --- mm/truncate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/truncate.c b/mm/truncate.c index 708a499..57625f7 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) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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