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authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2012-10-01 09:08:37 (GMT)
committerChris Mason <chris.mason@fusionio.com>2012-10-09 13:15:42 (GMT)
commitf0bd95ea72644cbf9210606f6f8edfce13d65d47 (patch)
tree1d0c37da707984971f14f48966b40d5c86ea63ee
parent18ec90d63f43cf785f6e73e7a7db546bff3fa380 (diff)
downloadlinux-fsl-qoriq-f0bd95ea72644cbf9210606f6f8edfce13d65d47.tar.xz
Btrfs: confirmation of value is added before trace_btrfs_get_extent() is called
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>
-rw-r--r--fs/btrfs/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d24b650..f92def2 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -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);