Commit 6cf8bfbf authored by Dan Carpenter's avatar Dan Carpenter Committed by Chris Mason
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Btrfs: check btrfs_get_extent return for IS_ERR() 



btrfs_get_extent() never returns NULL, only a valid pointer or ERR_PTR()

Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent c2b96929

fs/btrfs/ioctl.c

+1 −1
Original line number Diff line number Diff line
@@ -510,7 +510,7 @@ static int should_defrag_range(struct inode *inode, u64 start, u64 len, 
		em = btrfs_get_extent(inode, NULL, 0, start, len, 0);

		unlock_extent(io_tree, start, start + len - 1, GFP_NOFS);



		if (!em)

		if (IS_ERR(em))

			return 0;

	}