pin_down_extent performs some operations which can't fail and then calls
set_extent_dirty, which has two failure cases via set_extent_bit:
1) Return -EEXIST if exclusive bits are set
- Since it doesn't use any exclusive bits, this failure case can't
occur.
2) Return -ENOMEM if memory can't be allocated
- Since it's called with gfp_flags & __GFP_NOFAIL, this failure case
can't occur.
With no failure cases, it should return void.
Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>
---
fs/btrfs/extent-tree.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4290,9 +4290,9 @@ static u64 first_logical_byte(struct btr
return bytenr;
}
-static int pin_down_extent(struct btrfs_root *root,
- struct btrfs_block_group_cache *cache,
- u64 bytenr, u64 num_bytes, int reserved)
+static void pin_down_extent(struct btrfs_root *root,
+ struct btrfs_block_group_cache *cache,
+ u64 bytenr, u64 num_bytes, int reserved)
{
int ret;
@@ -4311,8 +4311,6 @@ static int pin_down_extent(struct btrfs_
bytenr + num_bytes - 1,
GFP_NOFS | __GFP_NOFAIL);
BUG_ON(ret < 0); /* __GFP_NOFAIL means it can't return -ENOMEM */
-
- return 0;
}
/*
--
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