[PATCH 2/3] btrfs: remove unnecessary -ENOMEM BUG_ON check in extent-tree.c/btrfs_alloc_logged_file_extent

Wang Sheng-Hui
2012-09-06T06:41:12Z

The memory allocation failure is BUG_ON in add_excluded_extent
(following the code path). No need to BUG_ON -ENOMEM inside
btrfs_alloc_logged_file_extent.

Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
---
fs/btrfs/extent-tree.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 95492cc..9b9a6fa 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6207,8 +6207,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
mutex_lock(&caching_ctl->mutex);

if (start >= caching_ctl->progress) {
- ret = add_excluded_extent(root, start, num_bytes);
- BUG_ON(ret); /* -ENOMEM */
+ add_excluded_extent(root, start, num_bytes);
} else if (start + num_bytes <= caching_ctl->progress) {
ret = btrfs_remove_free_space(block_group,
start, num_bytes);
@@ -6222,8 +6221,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
start = caching_ctl->progress;
num_bytes = ins->objectid + ins->offset -
caching_ctl->progress;
- ret = add_excluded_extent(root, start, num_bytes);
- BUG_ON(ret); /* -ENOMEM */
+ add_excluded_extent(root, start, num_bytes);
}

mutex_unlock(&caching_ctl->mutex);
--
1.7.1