diff options
author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-29 22:18:09 -0700 |
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committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-30 08:03:14 -0700 |
commit | 64a39d876e77264dbd06ec27564d9e4eed1c6786 (patch) | |
tree | 0120120ceb502bd8d6dd4ee6554f8cba76bc873c /fs/xfs/scrub/repair.h | |
parent | 73d6b42aa4dcdd7cdc07a945f035b0c1ca48f891 (diff) | |
download | linux-64a39d876e77264dbd06ec27564d9e4eed1c6786.tar.bz2 |
xfs: add helpers to collect and sift btree block pointers during repair
Add some helpers to assemble a list of fs block extents. Generally,
repair functions will iterate the rmapbt to make a list (1) of all
extents owned by the nominal owner of the metadata structure; then they
will iterate all other structures with the same rmap owner to make a
list (2) of active blocks; and finally we have a subtraction function to
subtract all the blocks in (2) from (1), with the result that (1) is now
a list of blocks that were owned by the old btree and must be disposed.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/scrub/repair.h')
-rw-r--r-- | fs/xfs/scrub/repair.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h index 40990fa5f381..ba1fdd7b9a79 100644 --- a/fs/xfs/scrub/repair.h +++ b/fs/xfs/scrub/repair.h @@ -43,6 +43,34 @@ int xfs_repair_init_btblock(struct xfs_scrub_context *sc, xfs_fsblock_t fsb, struct xfs_buf **bpp, xfs_btnum_t btnum, const struct xfs_buf_ops *ops); +struct xfs_repair_extent { + struct list_head list; + xfs_fsblock_t fsbno; + xfs_extlen_t len; +}; + +struct xfs_repair_extent_list { + struct list_head list; +}; + +static inline void +xfs_repair_init_extent_list( + struct xfs_repair_extent_list *exlist) +{ + INIT_LIST_HEAD(&exlist->list); +} + +#define for_each_xfs_repair_extent_safe(rbe, n, exlist) \ + list_for_each_entry_safe((rbe), (n), &(exlist)->list, list) +int xfs_repair_collect_btree_extent(struct xfs_scrub_context *sc, + struct xfs_repair_extent_list *btlist, xfs_fsblock_t fsbno, + xfs_extlen_t len); +void xfs_repair_cancel_btree_extents(struct xfs_scrub_context *sc, + struct xfs_repair_extent_list *btlist); +int xfs_repair_subtract_extents(struct xfs_scrub_context *sc, + struct xfs_repair_extent_list *exlist, + struct xfs_repair_extent_list *sublist); + /* Metadata repairers */ int xfs_repair_probe(struct xfs_scrub_context *sc); |