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Btrfs: check btrfs_get_extent return for IS_ERR()

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

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Dan Carpenter 2010-03-20 11:22:10 +00:00 • committed by Chris Mason
commit 6cf8bfbf5e
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/ioctl.c
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@ -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;
}