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| author | Naohiro Aota <naohiro.aota@wdc.com> | 2021-02-04 19:22:02 +0900 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-02-09 02:46:05 +0100 |
| commit | 138082f36610698e3fd00318f275d7f2159b8d26 (patch) | |
| tree | b82f607b7b604dd6a7509039f27f21ff8e561003 /fs/btrfs/block-group.h | |
| parent | cacb2cea46382aacf0365dbe231bd1ac3349478e (diff) | |
| download | lwn-138082f36610698e3fd00318f275d7f2159b8d26.tar.gz lwn-138082f36610698e3fd00318f275d7f2159b8d26.zip | |
btrfs: extend btrfs_rmap_block for specifying a device
btrfs_rmap_block currently reverse-maps the physical addresses on all
devices to the corresponding logical addresses.
Extend the function to match to a specified device. The old functionality
of querying all devices is left intact by specifying NULL as target
device.
A block_device instead of a btrfs_device is passed into btrfs_rmap_block,
as this function is intended to reverse-map the result of a bio, which
only has a block_device.
Also export the function for later use.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/block-group.h')
| -rw-r--r-- | fs/btrfs/block-group.h | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h index 0fd66febe115..d14ac03bb93d 100644 --- a/fs/btrfs/block-group.h +++ b/fs/btrfs/block-group.h @@ -277,6 +277,9 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info); int btrfs_free_block_groups(struct btrfs_fs_info *info); void btrfs_wait_space_cache_v1_finished(struct btrfs_block_group *cache, struct btrfs_caching_control *caching_ctl); +int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, + struct block_device *bdev, u64 physical, u64 **logical, + int *naddrs, int *stripe_len); static inline u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info) { @@ -303,9 +306,4 @@ static inline int btrfs_block_group_done(struct btrfs_block_group *cache) void btrfs_freeze_block_group(struct btrfs_block_group *cache); void btrfs_unfreeze_block_group(struct btrfs_block_group *cache); -#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS -int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, - u64 physical, u64 **logical, int *naddrs, int *stripe_len); -#endif - #endif /* BTRFS_BLOCK_GROUP_H */ |