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| author | Zhaolei <zhaolei@cn.fujitsu.com> | 2015-08-05 10:43:27 +0200 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-08-09 16:07:12 +0200 |
| commit | 868f401ae38acb439005626c04d575e64c5ae760 (patch) | |
| tree | 66a215bac40c8832a6df463aba4aaac4506a3be2 /fs/btrfs/ctree.h | |
| parent | btrfs: Bypass unrelated items before accessing its contents in scrub (diff) | |
| download | linux-868f401ae38acb439005626c04d575e64c5ae760.tar.xz linux-868f401ae38acb439005626c04d575e64c5ae760.zip | |
btrfs: Use ref_cnt for set_block_group_ro()
More than one code call set_block_group_ro() and restore rw in fail.
Old code use bool bit to save blockgroup's ro state, it can not
support parallel case(it is confirmd exist in my debug log).
This patch use ref count to store ro state, and rename
set_block_group_ro/set_block_group_rw
to
inc_block_group_ro/dec_block_group_ro.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index aac314e14188..f57e6cae394b 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1300,7 +1300,7 @@ struct btrfs_block_group_cache { /* for raid56, this is a full stripe, without parity */ unsigned long full_stripe_len; - unsigned int ro:1; + unsigned int ro; unsigned int iref:1; unsigned int has_caching_ctl:1; unsigned int removed:1; @@ -3495,9 +3495,9 @@ int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, void btrfs_block_rsv_release(struct btrfs_root *root, struct btrfs_block_rsv *block_rsv, u64 num_bytes); -int btrfs_set_block_group_ro(struct btrfs_root *root, +int btrfs_inc_block_group_ro(struct btrfs_root *root, struct btrfs_block_group_cache *cache); -void btrfs_set_block_group_rw(struct btrfs_root *root, +void btrfs_dec_block_group_ro(struct btrfs_root *root, struct btrfs_block_group_cache *cache); void btrfs_put_block_group_cache(struct btrfs_fs_info *info); u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |