diff mbox series

[2/5] xfsprogs: Invoke bulkstat ioctl with XFS_BULK_IREQ_NREXT64 flag

Message ID 20220525053630.734938-3-chandan.babu@oracle.com (mailing list archive)
State Accepted
Headers show
Series xfsprogs: Large extent counters | expand

Commit Message

Chandan Babu R May 25, 2022, 5:36 a.m. UTC 
This commit adds support to libfrog to enable reporting 64-bit extent counters
to its users. In order to do so, bulkstat ioctl is now invoked with the newly
introduced XFS_BULK_IREQ_NREXT64 flag if the underlying filesystem's geometry
supports 64-bit extent counters.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
---
 fsr/xfs_fsr.c                 |  4 ++--
 io/bulkstat.c                 |  1 +
 libfrog/bulkstat.c            | 29 +++++++++++++++++++++++++++--
 man/man2/ioctl_xfs_bulkstat.2 | 10 +++++++++-
 4 files changed, 39 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/fsr/xfs_fsr.c b/fsr/xfs_fsr.c
index 6cf8bfb7..ba02506d 100644
--- a/fsr/xfs_fsr.c
+++ b/fsr/xfs_fsr.c
@@ -590,7 +590,7 @@  cmp(const void *s1, const void *s2)
 		(bs1->bs_version == XFS_BULKSTAT_VERSION_V5 &&
 		bs2->bs_version == XFS_BULKSTAT_VERSION_V5));
 
-	return (bs2->bs_extents - bs1->bs_extents);
+	return (bs2->bs_extents64 - bs1->bs_extents64);
 }
 
 /*
@@ -655,7 +655,7 @@  fsrfs(char *mntdir, xfs_ino_t startino, int targetrange)
 		for (p = buf, endp = (buf + buflenout); p < endp ; p++) {
 			/* Do some obvious checks now */
 			if (((p->bs_mode & S_IFMT) != S_IFREG) ||
-			     (p->bs_extents < 2))
+			     (p->bs_extents64 < 2))
 				continue;
 
 			ret = -xfrog_bulkstat_v5_to_v1(&fsxfd, &bs1, p);
diff --git a/io/bulkstat.c b/io/bulkstat.c
index 41194200..a9ad87ca 100644
--- a/io/bulkstat.c
+++ b/io/bulkstat.c
@@ -57,6 +57,7 @@  dump_bulkstat(
 	printf("\tbs_sick = 0x%"PRIx16"\n", bstat->bs_sick);
 	printf("\tbs_checked = 0x%"PRIx16"\n", bstat->bs_checked);
 	printf("\tbs_mode = 0%"PRIo16"\n", bstat->bs_mode);
+	printf("\tbs_extents64 = %"PRIu64"\n", bstat->bs_extents64);
 };
 
 static void
diff --git a/libfrog/bulkstat.c b/libfrog/bulkstat.c
index 195f6ea0..0a90947f 100644
--- a/libfrog/bulkstat.c
+++ b/libfrog/bulkstat.c
@@ -56,6 +56,9 @@  xfrog_bulkstat_single5(
 	if (flags & ~(XFS_BULK_IREQ_SPECIAL))
 		return -EINVAL;
 
+	if (xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64)
+		flags |= XFS_BULK_IREQ_NREXT64;
+
 	ret = xfrog_bulkstat_alloc_req(1, ino, &req);
 	if (ret)
 		return ret;
@@ -73,6 +76,12 @@  xfrog_bulkstat_single5(
 	}
 
 	memcpy(bulkstat, req->bulkstat, sizeof(struct xfs_bulkstat));
+
+	if (!(xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64)) {
+		bulkstat->bs_extents64 = bulkstat->bs_extents;
+		bulkstat->bs_extents = 0;
+	}
+
 free:
 	free(req);
 	return ret;
@@ -129,6 +138,7 @@  xfrog_bulkstat_single(
 	switch (error) {
 	case -EOPNOTSUPP:
 	case -ENOTTY:
+		assert(!(xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64));
 		xfd->flags |= XFROG_FLAG_BULKSTAT_FORCE_V1;
 		break;
 	}
@@ -259,10 +269,23 @@  xfrog_bulkstat5(
 	struct xfs_bulkstat_req	*req)
 {
 	int			ret;
+	int			i;
+
+	if (xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64)
+		req->hdr.flags |= XFS_BULK_IREQ_NREXT64;
 
 	ret = ioctl(xfd->fd, XFS_IOC_BULKSTAT, req);
 	if (ret)
 		return -errno;
+
+	if (!(xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64)) {
+		for (i = 0; i < req->hdr.ocount; i++) {
+			req->bulkstat[i].bs_extents64 =
+				req->bulkstat[i].bs_extents;
+			req->bulkstat[i].bs_extents = 0;
+		}
+	}
+
 	return 0;
 }
 
@@ -316,6 +339,7 @@  xfrog_bulkstat(
 	switch (error) {
 	case -EOPNOTSUPP:
 	case -ENOTTY:
+		assert(!(xfd->fsgeom.flags & XFS_FSOP_GEOM_FLAGS_NREXT64));
 		xfd->flags |= XFROG_FLAG_BULKSTAT_FORCE_V1;
 		break;
 	}
@@ -342,6 +366,7 @@  xfrog_bulkstat_v5_to_v1(
 	const struct xfs_bulkstat	*bs5)
 {
 	if (bs5->bs_aextents > UINT16_MAX ||
+	    bs5->bs_extents64 > INT32_MAX ||
 	    cvt_off_fsb_to_b(xfd, bs5->bs_extsize_blks) > UINT32_MAX ||
 	    cvt_off_fsb_to_b(xfd, bs5->bs_cowextsize_blks) > UINT32_MAX ||
 	    time_too_big(bs5->bs_atime) ||
@@ -366,7 +391,7 @@  xfrog_bulkstat_v5_to_v1(
 	bs1->bs_blocks = bs5->bs_blocks;
 	bs1->bs_xflags = bs5->bs_xflags;
 	bs1->bs_extsize = cvt_off_fsb_to_b(xfd, bs5->bs_extsize_blks);
-	bs1->bs_extents = bs5->bs_extents;
+	bs1->bs_extents = bs5->bs_extents64;
 	bs1->bs_gen = bs5->bs_gen;
 	bs1->bs_projid_lo = bs5->bs_projectid & 0xFFFF;
 	bs1->bs_forkoff = bs5->bs_forkoff;
@@ -407,7 +432,6 @@  xfrog_bulkstat_v1_to_v5(
 	bs5->bs_blocks = bs1->bs_blocks;
 	bs5->bs_xflags = bs1->bs_xflags;
 	bs5->bs_extsize_blks = cvt_b_to_off_fsbt(xfd, bs1->bs_extsize);
-	bs5->bs_extents = bs1->bs_extents;
 	bs5->bs_gen = bs1->bs_gen;
 	bs5->bs_projectid = bstat_get_projid(bs1);
 	bs5->bs_forkoff = bs1->bs_forkoff;
@@ -415,6 +439,7 @@  xfrog_bulkstat_v1_to_v5(
 	bs5->bs_checked = bs1->bs_checked;
 	bs5->bs_cowextsize_blks = cvt_b_to_off_fsbt(xfd, bs1->bs_cowextsize);
 	bs5->bs_aextents = bs1->bs_aextents;
+	bs5->bs_extents64 = bs1->bs_extents;
 }
 
 /* Allocate a bulkstat request.  Returns zero or a negative error code. */
diff --git a/man/man2/ioctl_xfs_bulkstat.2 b/man/man2/ioctl_xfs_bulkstat.2
index cd0a9b06..3203ca0c 100644
--- a/man/man2/ioctl_xfs_bulkstat.2
+++ b/man/man2/ioctl_xfs_bulkstat.2
@@ -94,6 +94,13 @@  field.
 This flag may not be set at the same time as the
 .B XFS_BULK_IREQ_AGNO
 flag.
+.TP
+.B XFS_BULK_IREQ_NREXT64
+If this is set, data fork extent count is returned via bs_extents64 field and
+0 is assigned to bs_extents.  Otherwise, data fork extent count is returned
+via bs_extents field and bs_extents64 is assigned a value of 0. In the second
+case, bs_extents is set to (2^31 - 1) if data fork extent count is larger than
+2^31. This flag may be set independently of whether other flags have been set.
 .RE
 .PP
 .I hdr.icount
@@ -161,8 +168,9 @@  struct xfs_bulkstat {
 	uint16_t                bs_checked;
 	uint16_t                bs_mode;
 	uint16_t                bs_pad2;
+	uint64_t                bs_extents64;
 
-	uint64_t                bs_pad[7];
+	uint64_t                bs_pad[6];
 };
 .fi
 .in