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Btrfs: Abstract similar code for btrfs_block_rsv_add{, _noflush}

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btrfs_block_rsv_add{, _noflush}() have similar code, so abstract that code.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Miao Xie 2011-11-10 20:45:05 -05:00 committed by Chris Mason
parent 3254c87618
commit 61b520a9d0
1 changed files with 12 additions and 16 deletions
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28
fs/btrfs/extent-tree.c
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@ -3796,16 +3796,16 @@ void btrfs_free_block_rsv(struct btrfs_root *root,
kfree(rsv);
}
int btrfs_block_rsv_add(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes)
static inline int __block_rsv_add(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes, int flush)
{
int ret;
if (num_bytes == 0)
return 0;
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 1);
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, flush);
if (!ret) {
block_rsv_add_bytes(block_rsv, num_bytes, 1);
return 0;
@ -3814,22 +3814,18 @@ int btrfs_block_rsv_add(struct btrfs_root *root,
return ret;
}
int btrfs_block_rsv_add(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes)
{
return __block_rsv_add(root, block_rsv, num_bytes, 1);
}
int btrfs_block_rsv_add_noflush(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes)
{
int ret;
if (num_bytes == 0)
return 0;
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 0);
if (!ret) {
block_rsv_add_bytes(block_rsv, num_bytes, 1);
return 0;
}
return ret;
return __block_rsv_add(root, block_rsv, num_bytes, 0);
}
int btrfs_block_rsv_check(struct btrfs_root *root,