From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Use -ECANCELED to signal "stop iterating" instead of these magical
*_ITER_ABORT values, since it's duplicative.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_btree.c | 12 +++++-------
fs/xfs/libxfs/xfs_btree.h | 9 +++++++--
fs/xfs/libxfs/xfs_rmap.c | 10 +++++-----
fs/xfs/libxfs/xfs_shared.h | 3 ---
fs/xfs/scrub/agheader.c | 4 ++--
fs/xfs/scrub/attr.c | 2 +-
fs/xfs/scrub/bmap.c | 4 ++--
fs/xfs/scrub/repair.c | 4 ++--
fs/xfs/xfs_dquot.c | 2 +-
fs/xfs/xfs_fsmap.c | 4 ++--
fs/xfs/xfs_ioctl.c | 12 ++++++------
fs/xfs/xfs_itable.c | 6 +++---
fs/xfs/xfs_itable.h | 13 +++++++++----
fs/xfs/xfs_iwalk.c | 2 +-
fs/xfs/xfs_iwalk.h | 11 ++++++++---
15 files changed, 54 insertions(+), 44 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 802eb53c7a73..71de937f9e64 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -4598,7 +4598,7 @@ xfs_btree_simple_query_range(
/* Callback */
error = fn(cur, recp, priv);
- if (error < 0 || error == XFS_BTREE_QUERY_RANGE_ABORT)
+ if (error)
break;
advloop:
@@ -4700,8 +4700,7 @@ xfs_btree_overlapped_query_range(
*/
if (ldiff >= 0 && hdiff >= 0) {
error = fn(cur, recp, priv);
- if (error < 0 ||
- error == XFS_BTREE_QUERY_RANGE_ABORT)
+ if (error)
break;
} else if (hdiff < 0) {
/* Record is larger than high key; pop. */
@@ -4772,8 +4771,7 @@ xfs_btree_overlapped_query_range(
* Query a btree for all records overlapping a given interval of keys. The
* supplied function will be called with each record found; return one of the
* XFS_BTREE_QUERY_RANGE_{CONTINUE,ABORT} values or the usual negative error
- * code. This function returns XFS_BTREE_QUERY_RANGE_ABORT, zero, or a
- * negative error code.
+ * code. This function returns -ECANCELED, zero, or a negative error code.
*/
int
xfs_btree_query_range(
@@ -4889,7 +4887,7 @@ xfs_btree_has_record_helper(
union xfs_btree_rec *rec,
void *priv)
{
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
}
/* Is there a record covering a given range of keys? */
@@ -4904,7 +4902,7 @@ xfs_btree_has_record(
error = xfs_btree_query_range(cur, low, high,
&xfs_btree_has_record_helper, NULL);
- if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
+ if (error == -ECANCELED) {
*exists = true;
return 0;
}
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h
index fa3cd8ab9aba..326cf2a43f0d 100644
--- a/fs/xfs/libxfs/xfs_btree.h
+++ b/fs/xfs/libxfs/xfs_btree.h
@@ -464,9 +464,14 @@ xfs_failaddr_t xfs_btree_lblock_verify(struct xfs_buf *bp,
uint xfs_btree_compute_maxlevels(uint *limits, unsigned long len);
unsigned long long xfs_btree_calc_size(uint *limits, unsigned long long len);
-/* return codes */
+/*
+ * Return codes for the query range iterator function are 0 to continue
+ * iterating, and non-zero to stop iterating. Any non-zero value will be
+ * passed up to the _query_range caller. The special value -ECANCELED can be
+ * used to stop iteration, because _query_range never generates that error
+ * code on its own.
+ */
#define XFS_BTREE_QUERY_RANGE_CONTINUE (XFS_ITER_CONTINUE) /* keep iterating */
-#define XFS_BTREE_QUERY_RANGE_ABORT (XFS_ITER_ABORT) /* stop iterating */
typedef int (*xfs_btree_query_range_fn)(struct xfs_btree_cur *cur,
union xfs_btree_rec *rec, void *priv);
diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c
index 408dd2ec7a75..09644ff2c345 100644
--- a/fs/xfs/libxfs/xfs_rmap.c
+++ b/fs/xfs/libxfs/xfs_rmap.c
@@ -261,7 +261,7 @@ xfs_rmap_find_left_neighbor_helper(
*info->irec = *rec;
*info->stat = 1;
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
}
/*
@@ -304,7 +304,7 @@ xfs_rmap_find_left_neighbor(
error = xfs_rmap_query_range(cur, &info.high, &info.high,
xfs_rmap_find_left_neighbor_helper, &info);
- if (error == XFS_BTREE_QUERY_RANGE_ABORT)
+ if (error == -ECANCELED)
error = 0;
if (*stat)
trace_xfs_rmap_find_left_neighbor_result(cur->bc_mp,
@@ -338,7 +338,7 @@ xfs_rmap_lookup_le_range_helper(
*info->irec = *rec;
*info->stat = 1;
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
}
/*
@@ -376,7 +376,7 @@ xfs_rmap_lookup_le_range(
cur->bc_private.a.agno, bno, 0, owner, offset, flags);
error = xfs_rmap_query_range(cur, &info.high, &info.high,
xfs_rmap_lookup_le_range_helper, &info);
- if (error == XFS_BTREE_QUERY_RANGE_ABORT)
+ if (error == -ECANCELED)
error = 0;
if (*stat)
trace_xfs_rmap_lookup_le_range_result(cur->bc_mp,
@@ -2509,7 +2509,7 @@ xfs_rmap_has_other_keys_helper(
((rks->flags & rec->rm_flags) & XFS_RMAP_KEY_FLAGS) == rks->flags)
return 0;
rks->has_rmap = true;
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
}
/*
diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h
index e0641b7337b3..2bc31c5a0d49 100644
--- a/fs/xfs/libxfs/xfs_shared.h
+++ b/fs/xfs/libxfs/xfs_shared.h
@@ -180,7 +180,4 @@ struct xfs_ino_geometry {
/* Keep iterating the data structure. */
#define XFS_ITER_CONTINUE (0)
-/* Stop iterating the data structure. */
-#define XFS_ITER_ABORT (1)
-
#endif /* __XFS_SHARED_H__ */
diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c
index 16b09b941441..ba0f747c82e8 100644
--- a/fs/xfs/scrub/agheader.c
+++ b/fs/xfs/scrub/agheader.c
@@ -639,7 +639,7 @@ xchk_agfl_block(
xchk_agfl_block_xref(sc, agbno);
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
- return XFS_ITER_ABORT;
+ return -ECANCELED;
return 0;
}
@@ -730,7 +730,7 @@ xchk_agfl(
/* Check the blocks in the AGFL. */
error = xfs_agfl_walk(sc->mp, XFS_BUF_TO_AGF(sc->sa.agf_bp),
sc->sa.agfl_bp, xchk_agfl_block, &sai);
- if (error == XFS_ITER_ABORT) {
+ if (error == -ECANCELED) {
error = 0;
goto out_free;
}
diff --git a/fs/xfs/scrub/attr.c b/fs/xfs/scrub/attr.c
index 57dafb1665d9..bfb5f90a6dbd 100644
--- a/fs/xfs/scrub/attr.c
+++ b/fs/xfs/scrub/attr.c
@@ -171,7 +171,7 @@ xchk_xattr_listent(
args.blkno);
fail_xref:
if (sx->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
- context->seen_enough = XFS_ITER_ABORT;
+ context->seen_enough = -ECANCELED;
return;
}
diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
index 7b19c63e12ce..fa6ea6407992 100644
--- a/fs/xfs/scrub/bmap.c
+++ b/fs/xfs/scrub/bmap.c
@@ -522,7 +522,7 @@ xchk_bmap_check_rmap(
out:
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
return 0;
}
@@ -551,7 +551,7 @@ xchk_bmap_check_ag_rmaps(
sbcri.sc = sc;
sbcri.whichfork = whichfork;
error = xfs_rmap_query_all(cur, xchk_bmap_check_rmap, &sbcri);
- if (error == XFS_BTREE_QUERY_RANGE_ABORT)
+ if (error == -ECANCELED)
error = 0;
xfs_btree_del_cursor(cur, error);
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 7bcc755beb40..b70a88bc975e 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -664,7 +664,7 @@ xrep_findroot_agfl_walk(
{
xfs_agblock_t *agbno = priv;
- return (*agbno == bno) ? XFS_ITER_ABORT : 0;
+ return (*agbno == bno) ? -ECANCELED : 0;
}
/* Does this block match the btree information passed in? */
@@ -694,7 +694,7 @@ xrep_findroot_block(
if (owner == XFS_RMAP_OWN_AG) {
error = xfs_agfl_walk(mp, ri->agf, ri->agfl_bp,
xrep_findroot_agfl_walk, &agbno);
- if (error == XFS_ITER_ABORT)
+ if (error == -ECANCELED)
return 0;
if (error)
return error;
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 7ce770e779b4..aeb95e7391c1 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -1239,7 +1239,7 @@ xfs_qm_exit(void)
/*
* Iterate every dquot of a particular type. The caller must ensure that the
* particular quota type is active. iter_fn can return negative error codes,
- * or XFS_ITER_ABORT to indicate that it wants to stop iterating.
+ * or -ECANCELED to indicate that it wants to stop iterating.
*/
int
xfs_qm_dqiterate(
diff --git a/fs/xfs/xfs_fsmap.c b/fs/xfs/xfs_fsmap.c
index 5a8f9641562a..8ab4ab56fa89 100644
--- a/fs/xfs/xfs_fsmap.c
+++ b/fs/xfs/xfs_fsmap.c
@@ -276,7 +276,7 @@ xfs_getfsmap_helper(
*/
if (rec_daddr > info->next_daddr) {
if (info->head->fmh_entries >= info->head->fmh_count)
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
fmr.fmr_device = info->dev;
fmr.fmr_physical = info->next_daddr;
@@ -295,7 +295,7 @@ xfs_getfsmap_helper(
/* Fill out the extent we found */
if (info->head->fmh_entries >= info->head->fmh_count)
- return XFS_BTREE_QUERY_RANGE_ABORT;
+ return -ECANCELED;
trace_xfs_fsmap_mapping(mp, info->dev, info->agno, rec);
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 6ad63b57b6ca..495565feae4f 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -831,7 +831,7 @@ xfs_bulkstat_fmt(
/*
* Check the incoming bulk request @hdr from userspace and initialize the
* internal @breq bulk request appropriately. Returns 0 if the bulk request
- * should proceed; XFS_ITER_ABORT if there's nothing to do; or the usual
+ * should proceed; -ECANCELED if there's nothing to do; or the usual
* negative error code.
*/
static int
@@ -889,13 +889,13 @@ xfs_bulk_ireq_setup(
/* 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;
+ return -ECANCELED;
} 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)
- return XFS_ITER_ABORT;
+ return -ECANCELED;
return 0;
}
@@ -936,7 +936,7 @@ xfs_ioc_bulkstat(
return -EFAULT;
error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat);
- if (error == XFS_ITER_ABORT)
+ if (error == -ECANCELED)
goto out_teardown;
if (error < 0)
return error;
@@ -986,7 +986,7 @@ xfs_ioc_inumbers(
return -EFAULT;
error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers);
- if (error == XFS_ITER_ABORT)
+ if (error == -ECANCELED)
goto out_teardown;
if (error < 0)
return error;
@@ -1881,7 +1881,7 @@ xfs_ioc_getfsmap(
info.mp = ip->i_mount;
info.data = arg;
error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info);
- if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
+ if (error == -ECANCELED) {
error = 0;
aborted = true;
} else if (error)
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index b049e7369a66..884950adbd16 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -137,7 +137,7 @@ xfs_bulkstat_one_int(
xfs_irele(ip);
error = bc->formatter(bc->breq, buf);
- if (error == XFS_IBULK_ABORT)
+ if (error == -ECANCELED)
goto out_advance;
if (error)
goto out;
@@ -181,7 +181,7 @@ xfs_bulkstat_one(
* If we reported one inode to userspace then we abort because we hit
* the end of the buffer. Don't leak that back to userspace.
*/
- if (error == XFS_IWALK_ABORT)
+ if (error == -ECANCELED)
error = 0;
return error;
@@ -342,7 +342,7 @@ xfs_inumbers_walk(
int error;
error = ic->formatter(ic->breq, &inogrp);
- if (error && error != XFS_IBULK_ABORT)
+ if (error && error != -ECANCELED)
return error;
ic->breq->startino = XFS_AGINO_TO_INO(mp, agno, irec->ir_startino) +
diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h
index e90c1fc5b981..96a1e2a9be3f 100644
--- a/fs/xfs/xfs_itable.h
+++ b/fs/xfs/xfs_itable.h
@@ -18,9 +18,6 @@ struct xfs_ibulk {
/* 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)
-
/*
* Advance the user buffer pointer by one record of the given size. If the
* buffer is now full, return the appropriate error code.
@@ -34,13 +31,21 @@ xfs_ibulk_advance(
breq->ubuffer = b + bytes;
breq->ocount++;
- return breq->ocount == breq->icount ? XFS_IBULK_ABORT : 0;
+ return breq->ocount == breq->icount ? -ECANCELED : 0;
}
/*
* Return stat information in bulk (by-inode) for the filesystem.
*/
+/*
+ * Return codes for the formatter function are 0 to continue iterating, and
+ * non-zero to stop iterating. Any non-zero value will be passed up to the
+ * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop
+ * iteration, as neither bulkstat nor inumbers will ever generate that error
+ * code on their own.
+ */
+
typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq,
const struct xfs_bulkstat *bstat);
diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c
index 86ce52c1871f..aa375cf53021 100644
--- a/fs/xfs/xfs_iwalk.c
+++ b/fs/xfs/xfs_iwalk.c
@@ -31,7 +31,7 @@
* inode it finds, it calls a walk function with the relevant inode number and
* a pointer to caller-provided data. The walk function can return the usual
* negative error code to stop the iteration; 0 to continue the iteration; or
- * XFS_IWALK_ABORT to stop the iteration. This return value is returned to the
+ * -ECANCELED to stop the iteration. This return value is returned to the
* caller.
*
* Internally, we allow the walk function to do anything, which means that we
diff --git a/fs/xfs/xfs_iwalk.h b/fs/xfs/xfs_iwalk.h
index 6c960e10ed4d..742360d51378 100644
--- a/fs/xfs/xfs_iwalk.h
+++ b/fs/xfs/xfs_iwalk.h
@@ -6,12 +6,19 @@
#ifndef __XFS_IWALK_H__
#define __XFS_IWALK_H__
+/*
+ * Return codes for the inode/inobt walk function are 0 to continue iterating,
+ * and non-zero to stop iterating. Any non-zero value will be passed up to the
+ * iwalk or inobt_walk caller. The special value -ECANCELED can be used to
+ * stop iteration, as neither iwalk nor inobt_walk will ever generate that
+ * error code on their own.
+ */
+
/* Walk all inodes in the filesystem starting from @startino. */
typedef int (*xfs_iwalk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_ino_t ino, void *data);
/* Return values for xfs_iwalk_fn. */
#define XFS_IWALK_CONTINUE (XFS_ITER_CONTINUE)
-#define XFS_IWALK_ABORT (XFS_ITER_ABORT)
int xfs_iwalk(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t startino,
unsigned int flags, xfs_iwalk_fn iwalk_fn,
@@ -30,8 +37,6 @@ typedef int (*xfs_inobt_walk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_agnumber_t agno,
const struct xfs_inobt_rec_incore *irec,
void *data);
-/* Return value (for xfs_inobt_walk_fn) that aborts the walk immediately. */
-#define XFS_INOBT_WALK_ABORT (XFS_IWALK_ABORT)
int xfs_inobt_walk(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_ino_t startino, unsigned int flags,
