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authorDarrick J. Wong <darrick.wong@oracle.com>2018-05-29 22:24:44 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2018-05-30 08:03:14 -0700
commit51863d7dd77dd27a35b12b37c7caf8679903b6ae (patch)
tree462c165bfb2c16e70390f79688244cfa2a1d2abe /fs/xfs
parent05edd888d1b21b7c6af10fa3e0cdc1e5b4578493 (diff)
xfs: grab the per-ag structure whenever relevant
Grab and hold the per-AG data across a scrub run whenever relevant. This helps us avoid repeated trips through rcu and the radix tree in the repair code. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/scrub/common.c17
-rw-r--r--fs/xfs/scrub/common.h1
-rw-r--r--fs/xfs/scrub/scrub.h1
3 files changed, 19 insertions, 0 deletions
diff --git a/fs/xfs/scrub/common.c b/fs/xfs/scrub/common.c
index 518bff2be0c9..d3e5adc96411 100644
--- a/fs/xfs/scrub/common.c
+++ b/fs/xfs/scrub/common.c
@@ -541,6 +541,10 @@ xfs_scrub_ag_free(
xfs_trans_brelse(sc->tp, sa->agi_bp);
sa->agi_bp = NULL;
}
+ if (sa->pag) {
+ xfs_perag_put(sa->pag);
+ sa->pag = NULL;
+ }
sa->agno = NULLAGNUMBER;
}
@@ -568,6 +572,19 @@ xfs_scrub_ag_init(
return xfs_scrub_ag_btcur_init(sc, sa);
}
+/*
+ * Grab the per-ag structure if we haven't already gotten it. Teardown of the
+ * xfs_scrub_ag will release it for us.
+ */
+void
+xfs_scrub_perag_get(
+ struct xfs_mount *mp,
+ struct xfs_scrub_ag *sa)
+{
+ if (!sa->pag)
+ sa->pag = xfs_perag_get(mp, sa->agno);
+}
+
/* Per-scrubber setup functions */
/*
diff --git a/fs/xfs/scrub/common.h b/fs/xfs/scrub/common.h
index a660087b606e..fbb91a7144fd 100644
--- a/fs/xfs/scrub/common.h
+++ b/fs/xfs/scrub/common.h
@@ -123,6 +123,7 @@ xfs_scrub_setup_quota(struct xfs_scrub_context *sc, struct xfs_inode *ip)
void xfs_scrub_ag_free(struct xfs_scrub_context *sc, struct xfs_scrub_ag *sa);
int xfs_scrub_ag_init(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
struct xfs_scrub_ag *sa);
+void xfs_scrub_perag_get(struct xfs_mount *mp, struct xfs_scrub_ag *sa);
int xfs_scrub_ag_read_headers(struct xfs_scrub_context *sc, xfs_agnumber_t agno,
struct xfs_buf **agi, struct xfs_buf **agf,
struct xfs_buf **agfl);
diff --git a/fs/xfs/scrub/scrub.h b/fs/xfs/scrub/scrub.h
index 2f89a84a0e10..636424d5e2ee 100644
--- a/fs/xfs/scrub/scrub.h
+++ b/fs/xfs/scrub/scrub.h
@@ -51,6 +51,7 @@ struct xfs_scrub_meta_ops {
/* Buffer pointers and btree cursors for an entire AG. */
struct xfs_scrub_ag {
xfs_agnumber_t agno;
+ struct xfs_perag *pag;
/* AG btree roots */
struct xfs_buf *agf_bp;