xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xfs: add helpers to deal with transaction allocation and rolling

Browse Source 
For repairs, we need to reserve at least as many blocks as we think
we're going to need to rebuild the data structure, and we're going to
need some helpers to roll transactions while maintaining locks on the AG
headers so that other threads cannot wander into the middle of a repair.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
This commit is contained in:
Darrick J. Wong
2018-05-29 22:18:08 -07:00
parent 51863d7dd7
commit 0a9633fa2f
6 changed files with 194 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/xfs/scrub/repair.h
View File

@@ -32,6 +32,10 @@ static inline int xfs_repair_notsupported(struct xfs_scrub_context *sc)
int xfs_repair_attempt(struct xfs_inode *ip, struct xfs_scrub_context *sc,
bool *fixed);
void xfs_repair_failure(struct xfs_mount *mp);
int xfs_repair_roll_ag_trans(struct xfs_scrub_context *sc);
bool xfs_repair_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
enum xfs_ag_resv_type type);
xfs_extlen_t xfs_repair_calc_ag_resblks(struct xfs_scrub_context *sc);
/* Metadata repairers */
@@ -49,6 +53,14 @@ static inline int xfs_repair_attempt(
static inline void xfs_repair_failure(struct xfs_mount *mp) {}
static inline xfs_extlen_t
xfs_repair_calc_ag_resblks(
struct xfs_scrub_context *sc)
{
ASSERT(!(sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR));
return 0;
}
#define xfs_repair_probe xfs_repair_notsupported
#endif /* CONFIG_XFS_ONLINE_REPAIR */