From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Add a new xfs_bulk_ireq flag to constrain the iteration to a single AG.
If the passed-in startino value is zero then we start with the first
inode in the AG that the user passes in; otherwise, we iterate only
within the same AG as the passed-in inode.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Reviewed-by: Allison Collins <allison.henderson@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_fs.h | 10 ++++++++--
fs/xfs/xfs_ioctl.c | 25 ++++++++++++++++++++++++-
fs/xfs/xfs_itable.c | 6 +++---
fs/xfs/xfs_itable.h | 4 ++++
fs/xfs/xfs_iwalk.c | 12 ++++++++++++
fs/xfs/xfs_iwalk.h | 22 +++++++++++++++++-----
fs/xfs/xfs_qm.c | 3 ++-
7 files changed, 70 insertions(+), 12 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index f9f35139d4b7..77c06850ac52 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -462,11 +462,17 @@ struct xfs_bulk_ireq {
uint32_t flags; /* I/O: operation flags */
uint32_t icount; /* I: count of entries in buffer */
uint32_t ocount; /* O: count of entries filled out */
- uint32_t reserved32; /* must be zero */
+ uint32_t agno; /* I: see comment for IREQ_AGNO */
uint64_t reserved[5]; /* must be zero */
};
-#define XFS_BULK_IREQ_FLAGS_ALL (0)
+/*
+ * Only return results from the specified @agno. If @ino is zero, start
+ * with the first inode of @agno.
+ */
+#define XFS_BULK_IREQ_AGNO (1 << 0)
+
+#define XFS_BULK_IREQ_FLAGS_ALL (XFS_BULK_IREQ_AGNO)
/* Header for a single inode request. */
struct xfs_ireq {
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 2ac5e100b147..f71341cd8340 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -853,7 +853,6 @@ xfs_bulk_ireq_setup(
{
if (hdr->icount == 0 ||
(hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) ||
- hdr->reserved32 ||
memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved)))
return -EINVAL;
@@ -861,6 +860,29 @@ xfs_bulk_ireq_setup(
breq->ubuffer = ubuffer;
breq->icount = hdr->icount;
breq->ocount = 0;
+ breq->flags = 0;
+
+ /*
+ * The IREQ_AGNO flag means that we only want results from a given AG.
+ * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is
+ * beyond the specified AG then we return no results.
+ */
+ if (hdr->flags & XFS_BULK_IREQ_AGNO) {
+ if (hdr->agno >= mp->m_sb.sb_agcount)
+ return -EINVAL;
+
+ if (breq->startino == 0)
+ breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0);
+ else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno)
+ return -EINVAL;
+
+ breq->flags |= XFS_IBULK_SAME_AG;
+
+ /* Asking for an inode past the end of the AG? We're done! */
+ if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno)
+ return XFS_ITER_ABORT;
+ } else if (hdr->agno)
+ return -EINVAL;
/* Asking for an inode past the end of the FS? We're done! */
if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount)
@@ -945,6 +967,7 @@ xfs_ireq_setup(
breq->ubuffer = ubuffer;
breq->icount = 1;
breq->startino = hdr->ino;
+ breq->flags = 0;
return 0;
}
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 745b04f59132..f92a1508a2bd 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -248,8 +248,8 @@ xfs_bulkstat(
if (!bc.buf)
return -ENOMEM;
- error = xfs_iwalk(breq->mp, NULL, breq->startino, xfs_bulkstat_iwalk,
- breq->icount, &bc);
+ error = xfs_iwalk(breq->mp, NULL, breq->startino, breq->flags,
+ xfs_bulkstat_iwalk, breq->icount, &bc);
kmem_free(bc.buf);
@@ -367,7 +367,7 @@ xfs_inumbers(
if (xfs_bulkstat_already_done(breq->mp, breq->startino))
return 0;
- error = xfs_inobt_walk(breq->mp, NULL, breq->startino,
+ error = xfs_inobt_walk(breq->mp, NULL, breq->startino, breq->flags,
xfs_inumbers_walk, breq->icount, &ic);
/*
diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h
index fa9fb9104c7f..e90c1fc5b981 100644
--- a/fs/xfs/xfs_itable.h
+++ b/fs/xfs/xfs_itable.h
@@ -12,8 +12,12 @@ struct xfs_ibulk {
xfs_ino_t startino; /* start with this inode */
unsigned int icount; /* number of elements in ubuffer */
unsigned int ocount; /* number of records returned */
+ unsigned int flags; /* see XFS_IBULK_FLAG_* */
};
+/* Only iterate within the same AG as startino */
+#define XFS_IBULK_SAME_AG (XFS_IWALK_SAME_AG)
+
/* Return value that means we want to abort the walk. */
#define XFS_IBULK_ABORT (XFS_IWALK_ABORT)
diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c
index 80c139aed264..d21d9fe71f3d 100644
--- a/fs/xfs/xfs_iwalk.c
+++ b/fs/xfs/xfs_iwalk.c
@@ -519,6 +519,7 @@ xfs_iwalk(
struct xfs_mount *mp,
struct xfs_trans *tp,
xfs_ino_t startino,
+ unsigned int flags,
xfs_iwalk_fn iwalk_fn,
unsigned int inode_records,
void *data)
@@ -538,6 +539,7 @@ xfs_iwalk(
int error;
ASSERT(agno < mp->m_sb.sb_agcount);
+ ASSERT(!(flags & ~XFS_IWALK_FLAGS_ALL));
error = xfs_iwalk_alloc(&iwag);
if (error)
@@ -548,6 +550,8 @@ xfs_iwalk(
if (error)
break;
iwag.startino = XFS_AGINO_TO_INO(mp, agno + 1, 0);
+ if (flags & XFS_INOBT_WALK_SAME_AG)
+ break;
}
xfs_iwalk_free(&iwag);
@@ -586,6 +590,7 @@ int
xfs_iwalk_threaded(
struct xfs_mount *mp,
xfs_ino_t startino,
+ unsigned int flags,
xfs_iwalk_fn iwalk_fn,
unsigned int inode_records,
bool polled,
@@ -597,6 +602,7 @@ xfs_iwalk_threaded(
int error;
ASSERT(agno < mp->m_sb.sb_agcount);
+ ASSERT(!(flags & ~XFS_IWALK_FLAGS_ALL));
nr_threads = xfs_pwork_guess_datadev_parallelism(mp);
error = xfs_pwork_init(mp, &pctl, xfs_iwalk_ag_work, "xfs_iwalk",
@@ -618,6 +624,8 @@ xfs_iwalk_threaded(
iwag->sz_recs = xfs_iwalk_prefetch(inode_records);
xfs_pwork_queue(&pctl, &iwag->pwork);
startino = XFS_AGINO_TO_INO(mp, agno + 1, 0);
+ if (flags & XFS_INOBT_WALK_SAME_AG)
+ break;
}
if (polled)
@@ -674,6 +682,7 @@ xfs_inobt_walk(
struct xfs_mount *mp,
struct xfs_trans *tp,
xfs_ino_t startino,
+ unsigned int flags,
xfs_inobt_walk_fn inobt_walk_fn,
unsigned int inobt_records,
void *data)
@@ -691,6 +700,7 @@ xfs_inobt_walk(
int error;
ASSERT(agno < mp->m_sb.sb_agcount);
+ ASSERT(!(flags & ~XFS_INOBT_WALK_FLAGS_ALL));
error = xfs_iwalk_alloc(&iwag);
if (error)
@@ -701,6 +711,8 @@ xfs_inobt_walk(
if (error)
break;
iwag.startino = XFS_AGINO_TO_INO(mp, agno + 1, 0);
+ if (flags & XFS_INOBT_WALK_SAME_AG)
+ break;
}
xfs_iwalk_free(&iwag);
diff --git a/fs/xfs/xfs_iwalk.h b/fs/xfs/xfs_iwalk.h
index 67462861680c..6c960e10ed4d 100644
--- a/fs/xfs/xfs_iwalk.h
+++ b/fs/xfs/xfs_iwalk.h
@@ -14,10 +14,16 @@ typedef int (*xfs_iwalk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
#define XFS_IWALK_ABORT (XFS_ITER_ABORT)
int xfs_iwalk(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t startino,
- xfs_iwalk_fn iwalk_fn, unsigned int inode_records, void *data);
+ unsigned int flags, xfs_iwalk_fn iwalk_fn,
+ unsigned int inode_records, void *data);
int xfs_iwalk_threaded(struct xfs_mount *mp, xfs_ino_t startino,
- xfs_iwalk_fn iwalk_fn, unsigned int inode_records, bool poll,
- void *data);
+ unsigned int flags, xfs_iwalk_fn iwalk_fn,
+ unsigned int inode_records, bool poll, void *data);
+
+/* Only iterate inodes within the same AG as @startino. */
+#define XFS_IWALK_SAME_AG (0x1)
+
+#define XFS_IWALK_FLAGS_ALL (XFS_IWALK_SAME_AG)
/* Walk all inode btree records in the filesystem starting from @startino. */
typedef int (*xfs_inobt_walk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
@@ -28,7 +34,13 @@ typedef int (*xfs_inobt_walk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
#define XFS_INOBT_WALK_ABORT (XFS_IWALK_ABORT)
int xfs_inobt_walk(struct xfs_mount *mp, struct xfs_trans *tp,
- xfs_ino_t startino, xfs_inobt_walk_fn inobt_walk_fn,
- unsigned int inobt_records, void *data);
+ xfs_ino_t startino, unsigned int flags,
+ xfs_inobt_walk_fn inobt_walk_fn, unsigned int inobt_records,
+ void *data);
+
+/* Only iterate inobt records within the same AG as @startino. */
+#define XFS_INOBT_WALK_SAME_AG (XFS_IWALK_SAME_AG)
+
+#define XFS_INOBT_WALK_FLAGS_ALL (XFS_INOBT_WALK_SAME_AG)
#endif /* __XFS_IWALK_H__ */
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 8bb902125403..a526c28662ae 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1304,7 +1304,8 @@ xfs_qm_quotacheck(
flags |= XFS_PQUOTA_CHKD;
}
- error = xfs_iwalk_threaded(mp, 0, xfs_qm_dqusage_adjust, 0, true, NULL);
+ error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true,
+ NULL);
if (error)
goto error_return;
