diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-04-30 00:36:53 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2017-04-30 00:36:53 -0400 |
| commit | 0c9ec4beecac94cb450c8abb2ac8b7e8a79240ea (patch) | |
| tree | 95dec5ec2bd1b53c425c29bc98e7506e41e4747e /fs/ext4/mballoc.h | |
| parent | d0649f0416feb616d34d15e541716cb8a555e899 (diff) | |
ext4: support GETFSMAP ioctls
Support the GETFSMAP ioctls so that we can use the xfs free space
management tools to probe ext4 as well. Note that this is a partial
implementation -- we only report fixed-location metadata and free space;
everything else is reported as "unknown".
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.h')
| -rw-r--r-- | fs/ext4/mballoc.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index 1aba469f8220..2bed62084a8c 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -199,4 +199,21 @@ static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb, return ext4_group_first_block_no(sb, fex->fe_group) + (fex->fe_start << EXT4_SB(sb)->s_cluster_bits); } + +typedef int (*ext4_mballoc_query_range_fn)( + struct super_block *sb, + ext4_group_t agno, + ext4_grpblk_t start, + ext4_grpblk_t len, + void *priv); + +int +ext4_mballoc_query_range( + struct super_block *sb, + ext4_group_t agno, + ext4_grpblk_t start, + ext4_grpblk_t end, + ext4_mballoc_query_range_fn formatter, + void *priv); + #endif |