From: Chandan Babu R <chandanrlinux@gmail.com>
To: linux-xfs@vger.kernel.org
Cc: Chandan Babu R <chandanrlinux@gmail.com>, djwong@kernel.org
Subject: [PATCH V2 12/12] xfs: Error tag to test if v5 bulkstat skips inodes with large extent count
Date: Mon, 26 Jul 2021 17:15:41 +0530 [thread overview]
Message-ID: <20210726114541.24898-13-chandanrlinux@gmail.com> (raw)
In-Reply-To: <20210726114541.24898-1-chandanrlinux@gmail.com>
This commit adds a new error tag to allow user space tests to check if V5
bulkstat ioctl skips reporting inodes with large extent count.
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
---
fs/xfs/libxfs/xfs_errortag.h | 4 +++-
fs/xfs/xfs_error.c | 3 +++
fs/xfs/xfs_itable.c | 9 ++++++++-
3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h
index f5fa2151e05d..b2c533153737 100644
--- a/fs/xfs/libxfs/xfs_errortag.h
+++ b/fs/xfs/libxfs/xfs_errortag.h
@@ -60,7 +60,8 @@
#define XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT 37
#define XFS_ERRTAG_AG_RESV_FAIL 38
#define XFS_ERRTAG_SWAPEXT_FINISH_ONE 39
-#define XFS_ERRTAG_MAX 40
+#define XFS_ERRTAG_BULKSTAT_REDUCE_MAX_IEXTENTS 40
+#define XFS_ERRTAG_MAX 41
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -105,5 +106,6 @@
#define XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT 1
#define XFS_RANDOM_AG_RESV_FAIL 1
#define XFS_RANDOM_SWAPEXT_FINISH_ONE 1
+#define XFS_RANDOM_BULKSTAT_REDUCE_MAX_IEXTENTS 1
#endif /* __XFS_ERRORTAG_H_ */
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index e25b440cbfd3..e2a9446fb025 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -58,6 +58,7 @@ static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT,
XFS_RANDOM_AG_RESV_FAIL,
XFS_RANDOM_SWAPEXT_FINISH_ONE,
+ XFS_RANDOM_BULKSTAT_REDUCE_MAX_IEXTENTS,
};
struct xfs_errortag_attr {
@@ -172,6 +173,7 @@ XFS_ERRORTAG_ATTR_RW(reduce_max_iextents, XFS_ERRTAG_REDUCE_MAX_IEXTENTS);
XFS_ERRORTAG_ATTR_RW(bmap_alloc_minlen_extent, XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT);
XFS_ERRORTAG_ATTR_RW(ag_resv_fail, XFS_ERRTAG_AG_RESV_FAIL);
XFS_ERRORTAG_ATTR_RW(swapext_finish_one, XFS_RANDOM_SWAPEXT_FINISH_ONE);
+XFS_ERRORTAG_ATTR_RW(bulkstat_reduce_max_iextents, XFS_ERRTAG_BULKSTAT_REDUCE_MAX_IEXTENTS);
static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(noerror),
@@ -214,6 +216,7 @@ static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(bmap_alloc_minlen_extent),
XFS_ERRORTAG_ATTR_LIST(ag_resv_fail),
XFS_ERRORTAG_ATTR_LIST(swapext_finish_one),
+ XFS_ERRORTAG_ATTR_LIST(bulkstat_reduce_max_iextents),
NULL,
};
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 8493870a0a87..1b252d1cda9d 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -20,6 +20,7 @@
#include "xfs_icache.h"
#include "xfs_health.h"
#include "xfs_trans.h"
+#include "xfs_errortag.h"
/*
* Bulk Stat
@@ -143,7 +144,13 @@ xfs_bulkstat_one_int(
nextents = xfs_ifork_nextents(&ip->i_df);
if (bc->breq->version != XFS_BULKSTAT_VERSION_V6) {
- if (nextents > XFS_IFORK_EXTCNT_MAXS32) {
+ xfs_extnum_t max_nextents = XFS_IFORK_EXTCNT_MAXS32;
+
+ if (unlikely(XFS_TEST_ERROR(false, mp,
+ XFS_ERRTAG_BULKSTAT_REDUCE_MAX_IEXTENTS)))
+ max_nextents = 10;
+
+ if (nextents > max_nextents) {
xfs_iunlock(ip, XFS_ILOCK_SHARED);
xfs_irele(ip);
error = -EINVAL;
--
2.30.2
next prev parent reply other threads:[~2021-07-26 11:46 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 11:45 [PATCH V2 00/12] xfs: Extend per-inode extent counters Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 01/12] xfs: Move extent count limits to xfs_format.h Chandan Babu R
2021-07-26 18:00 ` Darrick J. Wong
2021-07-27 8:07 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 02/12] xfs: Rename MAXEXTNUM, MAXAEXTNUM to XFS_IFORK_EXTCNT_MAXS32, XFS_IFORK_EXTCNT_MAXS16 Chandan Babu R
2021-07-27 21:56 ` Darrick J. Wong
2021-07-27 22:03 ` Darrick J. Wong
2021-07-28 3:15 ` Chandan Babu R
2021-08-23 4:18 ` Chandan Babu R
2021-08-23 7:17 ` Chandan Babu R
2021-08-23 18:16 ` Darrick J. Wong
2021-07-26 11:45 ` [PATCH V2 03/12] xfs: Introduce xfs_iext_max() helper Chandan Babu R
2021-07-27 21:58 ` Darrick J. Wong
2021-07-28 3:17 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 04/12] xfs: Use xfs_extnum_t instead of basic data types Chandan Babu R
2021-07-27 21:59 ` Darrick J. Wong
2021-07-28 3:38 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 05/12] xfs: Introduce xfs_dfork_nextents() helper Chandan Babu R
2021-07-27 22:10 ` Darrick J. Wong
2021-07-28 4:06 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 06/12] xfs: xfs_dfork_nextents: Return extent count via an out argument Chandan Babu R
2021-07-27 22:22 ` Darrick J. Wong
2021-07-28 4:21 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 07/12] xfs: Rename inode's extent counter fields based on their width Chandan Babu R
2021-07-27 22:50 ` Darrick J. Wong
2021-07-28 5:48 ` Chandan Babu R
2021-07-28 19:04 ` Darrick J. Wong
2021-07-26 11:45 ` [PATCH V2 08/12] xfs: Promote xfs_extnum_t and xfs_aextnum_t to 64 and 32-bits respectively Chandan Babu R
2021-07-27 22:29 ` Darrick J. Wong
2021-07-26 11:45 ` [PATCH V2 09/12] xfs: Rename XFS_IOC_BULKSTAT to XFS_IOC_BULKSTAT_V5 Chandan Babu R
2021-07-27 22:54 ` Darrick J. Wong
2021-07-27 23:00 ` Darrick J. Wong
2021-07-27 23:17 ` Dave Chinner
2021-07-28 6:56 ` Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 10/12] xfs: Enable bulkstat ioctl to support 64-bit extent counters Chandan Babu R
2021-07-26 11:45 ` [PATCH V2 11/12] xfs: Extend per-inode extent counter widths Chandan Babu R
2021-07-27 23:09 ` Darrick J. Wong
2021-07-28 7:17 ` Chandan Babu R
2021-07-26 11:45 ` Chandan Babu R [this message]
2021-07-27 23:10 ` [PATCH V2 12/12] xfs: Error tag to test if v5 bulkstat skips inodes with large extent count Darrick J. Wong
2021-07-28 7:23 ` Chandan Babu R
2021-07-28 7:38 ` Chandan Babu R
2021-07-28 19:06 ` Darrick J. Wong
2021-07-28 21:27 ` [PATCH V2 00/12] xfs: Extend per-inode extent counters Darrick J. Wong
2021-07-29 6:40 ` Chandan Babu R
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