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Btrfs: confirmation of value is added before trace_btrfs_get_extent() is called

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We should confirm the value of extent_map before calling
trace_btrfs_get_extent() because the value of extent_map has the
possibility of NULL.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
This commit is contained in:
Tsutomu Itoh 2012-10-01 03:08:37 -06:00 • committed by Chris Mason
commit f0bd95ea72
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/inode.c
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@ -5505,7 +5505,8 @@ insert:
write_unlock(&em_tree->lock);
out:
trace_btrfs_get_extent(root, em);
if (em)
trace_btrfs_get_extent(root, em);
if (path)
btrfs_free_path(path);