btrfs: Remove redundant checks from btrfs_alloc_data_chunk_ondemand

Many commits ago the data space_info in alloc_data_chunk_ondemand used to be
acquired from the inode. At that point commit
33b4d47f5e ("Btrfs: deal with NULL space info") got introduced to deal with
spurios cases where the space info could be null, following a rebalance.
Nowadays, however, the space info is referenced directly from the btrfs_fs_info
struct which is initialised at filesystem mount time. This makes the null
checks redundant, so remove them.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2017-07-11 13:47:50 +03:00 committed by David Sterba
parent 7bdd6277e0
commit 1174cade81
1 changed files with 2 additions and 9 deletions

View File

@ -4199,9 +4199,9 @@ static u64 btrfs_space_info_used(struct btrfs_space_info *s_info,
int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes)
{
struct btrfs_space_info *data_sinfo;
struct btrfs_root *root = inode->root;
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_space_info *data_sinfo = fs_info->data_sinfo;
u64 used;
int ret = 0;
int need_commit = 2;
@ -4215,10 +4215,6 @@ int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes)
ASSERT(current->journal_info);
}
data_sinfo = fs_info->data_sinfo;
if (!data_sinfo)
goto alloc;
again:
/* make sure we have enough space to handle the data first */
spin_lock(&data_sinfo->lock);
@ -4236,7 +4232,7 @@ int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes)
data_sinfo->force_alloc = CHUNK_ALLOC_FORCE;
spin_unlock(&data_sinfo->lock);
alloc:
alloc_target = btrfs_data_alloc_profile(fs_info);
/*
* It is ugly that we don't call nolock join
@ -4264,9 +4260,6 @@ int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes)
}
}
if (!data_sinfo)
data_sinfo = fs_info->data_sinfo;
goto again;
}