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xfs: hoist the already_fixed variable to the scrub context 

Now that we no longer memset the scrub context, we can move the
already_fixed variable into the scrub context's state flags instead of
passing around pointers to separate stack variables.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2019-04-16 08:22:00 -07:00
parent f8c2a2257c
commit 160b5a7845
4 changed files with 10 additions and 11 deletions
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5
fs/xfs/scrub/repair.c
View File

@ -46,8 +46,7 @@
int
xrep_attempt(
struct xfs_inode *ip,
struct xfs_scrub *sc,
bool *fixed)
struct xfs_scrub *sc)
{
int error = 0;
@ -66,7 +65,7 @@ xrep_attempt(
* scrub so that we can tell userspace if we fixed the problem.
*/
sc->sm->sm_flags &= ~XFS_SCRUB_FLAGS_OUT;
*fixed = true;
sc->flags |= XREP_ALREADY_FIXED;
return -EAGAIN;
case -EDEADLOCK:
case -EAGAIN:

5
fs/xfs/scrub/repair.h
View File

@ -15,7 +15,7 @@ static inline int xrep_notsupported(struct xfs_scrub *sc)
/* Repair helpers */
int xrep_attempt(struct xfs_inode *ip, struct xfs_scrub *sc, bool *fixed);
int xrep_attempt(struct xfs_inode *ip, struct xfs_scrub *sc);
void xrep_failure(struct xfs_mount *mp);
int xrep_roll_ag_trans(struct xfs_scrub *sc);
bool xrep_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
@ -64,8 +64,7 @@ int xrep_agi(struct xfs_scrub *sc);
static inline int xrep_attempt(
struct xfs_inode *ip,
struct xfs_scrub *sc,
bool *fixed)
struct xfs_scrub *sc)
{
return -EOPNOTSUPP;
}

6
fs/xfs/scrub/scrub.c
View File

@ -476,7 +476,6 @@ xfs_scrub_metadata(
},
};
struct xfs_mount *mp = ip->i_mount;
bool already_fixed = false;
int error = 0;
BUILD_BUG_ON(sizeof(meta_scrub_ops) !=
@ -521,7 +520,8 @@ retry_op:
} else if (error)
goto out_teardown;
if ((sc.sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR) && !already_fixed) {
if ((sc.sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR) &&
!(sc.flags & XREP_ALREADY_FIXED)) {
bool needs_fix;
/* Let debug users force us into the repair routines. */
@ -544,7 +544,7 @@ retry_op:
* If it's broken, userspace wants us to fix it, and we haven't
* already tried to fix it, then attempt a repair.
*/
error = xrep_attempt(ip, &sc, &already_fixed);
error = xrep_attempt(ip, &sc);
if (error == -EAGAIN) {
/*
* Either the repair function succeeded or it couldn't

5
fs/xfs/scrub/scrub.h
View File

@ -63,16 +63,17 @@ struct xfs_scrub {
void *buf;
uint ilock_flags;
/* See the XCHK state flags below. */
/* See the XCHK/XREP state flags below. */
unsigned int flags;
/* State tracking for single-AG operations. */
struct xchk_ag sa;
};
/* XCHK state flags */
/* XCHK state flags grow up from zero, XREP state flags grown down from 2^31 */
#define XCHK_TRY_HARDER (1 << 0) /* can't get resources, try again */
#define XCHK_HAS_QUOTAOFFLOCK (1 << 1) /* we hold the quotaoff lock */
#define XREP_ALREADY_FIXED (1 << 31) /* checking our repair work */
/* Metadata scrubbers */
int xchk_tester(struct xfs_scrub *sc);