[PATCH 02/21] xfs: create incore realtime group structures

Darrick J. Wong
2024-10-11T00:56:13Z

Create an incore object that will contain information about a realtime
allocation group. This will eventually enable us to shard the realtime
section in a similar manner to how we shard the data section, but for
now just a single object for the entire RT subvolume is created.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/Makefile | 1
fs/xfs/libxfs/xfs_format.h | 3 +
fs/xfs/libxfs/xfs_group.c | 8 ++
fs/xfs/libxfs/xfs_rtgroup.c | 129 +++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_rtgroup.h | 208 +++++++++++++++++++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_sb.c | 7 +
fs/xfs/libxfs/xfs_types.h | 8 +-
fs/xfs/xfs_bmap_util.c | 3 -
fs/xfs/xfs_fsmap.c | 5 +
fs/xfs/xfs_log_recover.c | 15 +++
fs/xfs/xfs_mount.c | 13 ++-
fs/xfs/xfs_mount.h | 13 +++
fs/xfs/xfs_rtalloc.c | 5 +
fs/xfs/xfs_super.c | 1
fs/xfs/xfs_trace.c | 1
fs/xfs/xfs_trace.h | 1
16 files changed, 416 insertions(+), 5 deletions(-)
create mode 100644 fs/xfs/libxfs/xfs_rtgroup.c
create mode 100644 fs/xfs/libxfs/xfs_rtgroup.h

diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index d80c2817eb4892..6814debac29929 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -61,6 +61,7 @@ xfs-y += $(addprefix libxfs/, \
# xfs_rtbitmap is shared with libxfs
xfs-$(CONFIG_XFS_RT) += $(addprefix libxfs/, \
xfs_rtbitmap.o \
+ xfs_rtgroup.o \
)

# highlevel code
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index c035d8a45d6ffc..495eeaef0b5c71 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -185,6 +185,9 @@ typedef struct xfs_sb {

xfs_ino_t sb_metadirino; /* metadata directory tree root */

+ xfs_rgnumber_t sb_rgcount; /* number of realtime groups */
+ xfs_rtxlen_t sb_rgextents; /* size of a realtime group in rtx */
+
/* must be padded to 64 bit alignment */
} xfs_sb_t;

diff --git a/fs/xfs/libxfs/xfs_group.c b/fs/xfs/libxfs/xfs_group.c
index 07b96de47e2b56..cf6427cf350bb8 100644
--- a/fs/xfs/libxfs/xfs_group.c
+++ b/fs/xfs/libxfs/xfs_group.c
@@ -13,6 +13,7 @@
#include "xfs_extent_busy.h"
#include "xfs_group.h"
#include "xfs_ag.h"
+#include "xfs_rtgroup.h"

/*
* Groups can have passive and active references.
@@ -221,6 +222,8 @@ xfs_gbno_to_fsb(
struct xfs_group *xg,
xfs_agblock_t gbno)
{
+ if (xg->xg_type == XG_TYPE_RTG)
+ return xfs_rgbno_to_rtb(to_rtg(xg), gbno);
return xfs_agbno_to_fsb(to_perag(xg), gbno);
}

@@ -229,6 +232,9 @@ xfs_gbno_to_daddr(
struct xfs_group *xg,
xfs_agblock_t gbno)
{
+ if (xg->xg_type == XG_TYPE_RTG)
+ return xfs_rtb_to_daddr(xg->xg_mount,
+ xfs_rgbno_to_rtb(to_rtg(xg), gbno));
return xfs_agbno_to_daddr(to_perag(xg), gbno);
}

@@ -238,6 +244,8 @@ xfs_fsb_to_gno(
xfs_fsblock_t fsbno,
enum xfs_group_type type)
{
+ if (type == XG_TYPE_RTG)
+ return xfs_rtb_to_rgno(mp, fsbno);
return XFS_FSB_TO_AGNO(mp, fsbno);
}

diff --git a/fs/xfs/libxfs/xfs_rtgroup.c b/fs/xfs/libxfs/xfs_rtgroup.c
new file mode 100644
index 00000000000000..37c0330ca379d9
--- /dev/null
+++ b/fs/xfs/libxfs/xfs_rtgroup.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2022-2024 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@kernel.org>
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_bit.h"
+#include "xfs_sb.h"
+#include "xfs_mount.h"
+#include "xfs_btree.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_rmap_btree.h"
+#include "xfs_alloc.h"
+#include "xfs_ialloc.h"
+#include "xfs_rmap.h"
+#include "xfs_ag.h"
+#include "xfs_ag_resv.h"
+#include "xfs_health.h"
+#include "xfs_error.h"
+#include "xfs_bmap.h"
+#include "xfs_defer.h"
+#include "xfs_log_format.h"
+#include "xfs_trans.h"
+#include "xfs_trace.h"
+#include "xfs_inode.h"
+#include "xfs_icache.h"
+#include "xfs_rtgroup.h"
+#include "xfs_rtbitmap.h"
+
+int
+xfs_rtgroup_alloc(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno,
+ xfs_rgnumber_t rgcount,
+ xfs_rtbxlen_t rextents)
+{
+ struct xfs_rtgroup *rtg;
+ int error;
+
+ rtg = kzalloc(sizeof(struct xfs_rtgroup), GFP_KERNEL);
+ if (!rtg)
+ return -ENOMEM;
+
+ error = xfs_group_insert(mp, &rtg->rtg_group, rgno, XG_TYPE_RTG);
+ if (error)
+ goto out_free_rtg;
+ return 0;
+
+out_free_rtg:
+ kfree(rtg);
+ return error;
+}
+
+void
+xfs_rtgroup_free(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno)
+{
+ xfs_group_free(mp, rgno, XG_TYPE_RTG, NULL);
+}
+
+/* Free a range of incore rtgroup objects. */
+void
+xfs_free_rtgroups(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t first_rgno,
+ xfs_rgnumber_t end_rgno)
+{
+ xfs_rgnumber_t rgno;
+
+ for (rgno = first_rgno; rgno < end_rgno; rgno++)
+ xfs_rtgroup_free(mp, rgno);
+}
+
+/* Initialize some range of incore rtgroup objects. */
+int
+xfs_initialize_rtgroups(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t first_rgno,
+ xfs_rgnumber_t end_rgno,
+ xfs_rtbxlen_t rextents)
+{
+ xfs_rgnumber_t index;
+ int error;
+
+ if (first_rgno >= end_rgno)
+ return 0;
+
+ for (index = first_rgno; index < end_rgno; index++) {
+ error = xfs_rtgroup_alloc(mp, index, end_rgno, rextents);
+ if (error)
+ goto out_unwind_new_rtgs;
+ }
+
+ return 0;
+
+out_unwind_new_rtgs:
+ xfs_free_rtgroups(mp, first_rgno, index);
+ return error;
+}
+
+/* Compute the number of rt extents in this realtime group. */
+xfs_rtxnum_t
+__xfs_rtgroup_extents(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno,
+ xfs_rgnumber_t rgcount,
+ xfs_rtbxlen_t rextents)
+{
+ ASSERT(rgno < rgcount);
+ if (rgno == rgcount - 1)
+ return rextents - ((xfs_rtxnum_t)rgno * mp->m_sb.sb_rgextents);
+
+ ASSERT(xfs_has_rtgroups(mp));
+ return mp->m_sb.sb_rgextents;
+}
+
+xfs_rtxnum_t
+xfs_rtgroup_extents(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno)
+{
+ return __xfs_rtgroup_extents(mp, rgno, mp->m_sb.sb_rgcount,
+ mp->m_sb.sb_rextents);
+}
diff --git a/fs/xfs/libxfs/xfs_rtgroup.h b/fs/xfs/libxfs/xfs_rtgroup.h
new file mode 100644
index 00000000000000..a9462aefefd77c
--- /dev/null
+++ b/fs/xfs/libxfs/xfs_rtgroup.h
@@ -0,0 +1,208 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2022-2024 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@kernel.org>
+ */
+#ifndef __LIBXFS_RTGROUP_H
+#define __LIBXFS_RTGROUP_H 1
+
+#include "xfs_group.h"
+
+struct xfs_mount;
+struct xfs_trans;
+
+/*
+ * Realtime group incore structure, similar to the per-AG structure.
+ */
+struct xfs_rtgroup {
+ struct xfs_group rtg_group;
+
+ /* Number of blocks in this group */
+ xfs_rtxnum_t rtg_extents;
+};
+
+static inline struct xfs_rtgroup *to_rtg(struct xfs_group *xg)
+{
+ return container_of(xg, struct xfs_rtgroup, rtg_group);
+}
+
+static inline struct xfs_mount *rtg_mount(const struct xfs_rtgroup *rtg)
+{
+ return rtg->rtg_group.xg_mount;
+}
+
+static inline xfs_rgnumber_t rtg_rgno(const struct xfs_rtgroup *rtg)
+{
+ return rtg->rtg_group.xg_index;
+}
+
+/* Passive rtgroup references */
+static inline struct xfs_rtgroup *
+xfs_rtgroup_get(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno)
+{
+ return to_rtg(xfs_group_get(mp, rgno, XG_TYPE_RTG));
+}
+
+static inline struct xfs_rtgroup *
+xfs_rtgroup_hold(
+ struct xfs_rtgroup *rtg)
+{
+ return to_rtg(xfs_group_hold(&rtg->rtg_group));
+}
+
+static inline void
+xfs_rtgroup_put(
+ struct xfs_rtgroup *rtg)
+{
+ xfs_group_put(&rtg->rtg_group);
+}
+
+/* Active rtgroup references */
+static inline struct xfs_rtgroup *
+xfs_rtgroup_grab(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno)
+{
+ return to_rtg(xfs_group_grab(mp, rgno, XG_TYPE_RTG));
+}
+
+static inline void
+xfs_rtgroup_rele(
+ struct xfs_rtgroup *rtg)
+{
+ xfs_group_rele(&rtg->rtg_group);
+}
+
+static inline struct xfs_rtgroup *
+xfs_rtgroup_next_range(
+ struct xfs_mount *mp,
+ struct xfs_rtgroup *rtg,
+ xfs_rgnumber_t start_rgno,
+ xfs_rgnumber_t end_rgno)
+{
+ return to_rtg(xfs_group_next_range(mp, rtg ? &rtg->rtg_group : NULL,
+ start_rgno, end_rgno, XG_TYPE_RTG));
+}
+
+static inline struct xfs_rtgroup *
+xfs_rtgroup_next(
+ struct xfs_mount *mp,
+ struct xfs_rtgroup *rtg)
+{
+ return xfs_rtgroup_next_range(mp, rtg, 0, mp->m_sb.sb_rgcount - 1);
+}
+
+static inline xfs_rtblock_t
+xfs_rgno_start_rtb(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno)
+{
+ if (mp->m_rgblklog >= 0)
+ return ((xfs_rtblock_t)rgno << mp->m_rgblklog);
+ return ((xfs_rtblock_t)rgno * mp->m_rgblocks);
+}
+
+static inline xfs_rtblock_t
+__xfs_rgbno_to_rtb(
+ struct xfs_mount *mp,
+ xfs_rgnumber_t rgno,
+ xfs_rgblock_t rgbno)
+{
+ return xfs_rgno_start_rtb(mp, rgno) + rgbno;
+}
+
+static inline xfs_rtblock_t
+xfs_rgbno_to_rtb(
+ struct xfs_rtgroup *rtg,
+ xfs_rgblock_t rgbno)
+{
+ return __xfs_rgbno_to_rtb(rtg_mount(rtg), rtg_rgno(rtg), rgbno);
+}
+
+static inline xfs_rgnumber_t
+xfs_rtb_to_rgno(
+ struct xfs_mount *mp,
+ xfs_rtblock_t rtbno)
+{
+ if (!xfs_has_rtgroups(mp))
+ return 0;
+
+ if (mp->m_rgblklog >= 0)
+ return rtbno >> mp->m_rgblklog;
+
+ return div_u64(rtbno, mp->m_rgblocks);
+}
+
+static inline uint64_t
+__xfs_rtb_to_rgbno(
+ struct xfs_mount *mp,
+ xfs_rtblock_t rtbno)
+{
+ uint32_t rem;
+
+ if (!xfs_has_rtgroups(mp))
+ return rtbno;
+
+ if (mp->m_rgblklog >= 0)
+ return rtbno & mp->m_rgblkmask;
+
+ div_u64_rem(rtbno, mp->m_rgblocks, &rem);
+ return rem;
+}
+
+static inline xfs_rgblock_t
+xfs_rtb_to_rgbno(
+ struct xfs_mount *mp,
+ xfs_rtblock_t rtbno)
+{
+ return __xfs_rtb_to_rgbno(mp, rtbno);
+}
+
+static inline xfs_daddr_t
+xfs_rtb_to_daddr(
+ struct xfs_mount *mp,
+ xfs_rtblock_t rtbno)
+{
+ return rtbno << mp->m_blkbb_log;
+}
+
+static inline xfs_rtblock_t
+xfs_daddr_to_rtb(
+ struct xfs_mount *mp,
+ xfs_daddr_t daddr)
+{
+ return daddr >> mp->m_blkbb_log;
+}
+
+#ifdef CONFIG_XFS_RT
+int xfs_rtgroup_alloc(struct xfs_mount *mp, xfs_rgnumber_t rgno,
+ xfs_rgnumber_t rgcount, xfs_rtbxlen_t rextents);
+void xfs_rtgroup_free(struct xfs_mount *mp, xfs_rgnumber_t rgno);
+
+void xfs_free_rtgroups(struct xfs_mount *mp, xfs_rgnumber_t first_rgno,
+ xfs_rgnumber_t end_rgno);
+int xfs_initialize_rtgroups(struct xfs_mount *mp, xfs_rgnumber_t first_rgno,
+ xfs_rgnumber_t end_rgno, xfs_rtbxlen_t rextents);
+
+xfs_rtxnum_t __xfs_rtgroup_extents(struct xfs_mount *mp, xfs_rgnumber_t rgno,
+ xfs_rgnumber_t rgcount, xfs_rtbxlen_t rextents);
+xfs_rtxnum_t xfs_rtgroup_extents(struct xfs_mount *mp, xfs_rgnumber_t rgno);
+#else
+static inline void xfs_free_rtgroups(struct xfs_mount *mp,
+ xfs_rgnumber_t first_rgno, xfs_rgnumber_t end_rgno)
+{
+}
+
+static inline int xfs_initialize_rtgroups(struct xfs_mount *mp,
+ xfs_rgnumber_t first_rgno, xfs_rgnumber_t end_rgno,
+ xfs_rtbxlen_t rextents)
+{
+ return 0;
+}
+
+# define xfs_rtgroup_extents(mp, rgno) (0)
+#endif /* CONFIG_XFS_RT */
+
+#endif /* __LIBXFS_RTGROUP_H */
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 5fbf8d18417880..8fbdad6cc88724 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -707,6 +707,9 @@ __xfs_sb_from_disk(
to->sb_metadirino = NULLFSINO;
to->sb_bad_features2 = be32_to_cpu(from->sb_bad_features2);
}
+
+ to->sb_rgcount = 1;
+ to->sb_rgextents = 0;
}

void
@@ -997,6 +1000,10 @@ xfs_mount_sb_set_rextsize(
{
mp->m_rtxblklog = log2_if_power2(sbp->sb_rextsize);
mp->m_rtxblkmask = mask64_if_power2(sbp->sb_rextsize);
+
+ mp->m_rgblocks = 0;
+ mp->m_rgblklog = 0;
+ mp->m_rgblkmask = 0;
}

/*
diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
index d3cb6ff3b91301..b7ff777ebacb8a 100644
--- a/fs/xfs/libxfs/xfs_types.h
+++ b/fs/xfs/libxfs/xfs_types.h
@@ -9,10 +9,12 @@
typedef uint32_t prid_t; /* project ID */

typedef uint32_t xfs_agblock_t; /* blockno in alloc. group */
+typedef uint32_t xfs_rgblock_t; /* blockno in realtime group */
typedef uint32_t xfs_agino_t; /* inode # within allocation grp */
typedef uint32_t xfs_extlen_t; /* extent length in blocks */
typedef uint32_t xfs_rtxlen_t; /* file extent length in rtextents */
typedef uint32_t xfs_agnumber_t; /* allocation group number */
+typedef uint32_t xfs_rgnumber_t; /* realtime group number */
typedef uint64_t xfs_extnum_t; /* # of extents in a file */
typedef uint32_t xfs_aextnum_t; /* # extents in an attribute fork */
typedef int64_t xfs_fsize_t; /* bytes in a file */
@@ -53,7 +55,9 @@ typedef void * xfs_failaddr_t;
#define NULLFILEOFF ((xfs_fileoff_t)-1)

#define NULLAGBLOCK ((xfs_agblock_t)-1)
+#define NULLRGBLOCK ((xfs_rgblock_t)-1)
#define NULLAGNUMBER ((xfs_agnumber_t)-1)
+#define NULLRGNUMBER ((xfs_rgnumber_t)-1)

#define NULLCOMMITLSN ((xfs_lsn_t)-1)

@@ -214,11 +218,13 @@ enum xbtree_recpacking {

enum xfs_group_type {
XG_TYPE_AG,
+ XG_TYPE_RTG,
XG_TYPE_MAX,
} __packed;

#define XG_TYPE_STRINGS \
- { XG_TYPE_AG, "ag" }
+ { XG_TYPE_AG, "ag" }, \
+ { XG_TYPE_RTG, "rtg" }

/*
* Type verifier functions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index d283e076a58d3d..9d654664a00dbd 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -29,6 +29,7 @@
#include "xfs_iomap.h"
#include "xfs_reflink.h"
#include "xfs_rtbitmap.h"
+#include "xfs_rtgroup.h"

/* Kernel only BMAP related definitions and functions */

@@ -41,7 +42,7 @@ xfs_daddr_t
xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
{
if (XFS_IS_REALTIME_INODE(ip))
- return XFS_FSB_TO_BB(ip->i_mount, fsb);
+ return xfs_rtb_to_daddr(ip->i_mount, fsb);
return XFS_FSB_TO_DADDR(ip->i_mount, fsb);
}

diff --git a/fs/xfs/xfs_fsmap.c b/fs/xfs/xfs_fsmap.c
index db46fc3da48928..a31c748c85b0d8 100644
--- a/fs/xfs/xfs_fsmap.c
+++ b/fs/xfs/xfs_fsmap.c
@@ -25,6 +25,7 @@
#include "xfs_alloc_btree.h"
#include "xfs_rtbitmap.h"
#include "xfs_ag.h"
+#include "xfs_rtgroup.h"

/* Convert an xfs_fsmap to an fsmap. */
static void
@@ -735,7 +736,7 @@ xfs_getfsmap_rtdev_rtbitmap_helper(
frec.start_daddr = info->end_daddr;
} else {
rtbno = xfs_rtx_to_rtb(mp, rec->ar_startext);
- frec.start_daddr = XFS_FSB_TO_BB(mp, rtbno);
+ frec.start_daddr = xfs_rtb_to_daddr(mp, rtbno);
}

rtbno = xfs_rtx_to_rtb(mp, rec->ar_extcount);
@@ -770,7 +771,7 @@ xfs_getfsmap_rtdev_rtbitmap(

/* Adjust the low key if we are continuing from where we left off. */
if (keys[0].fmr_length > 0) {
- info->low_daddr = XFS_FSB_TO_BB(mp, start_rtb);
+ info->low_daddr = xfs_rtb_to_daddr(mp, start_rtb);
if (info->low_daddr >= eofs)
return 0;
}
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 0856080f87d3e6..a6abc09864edd0 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -28,6 +28,7 @@
#include "xfs_ag.h"
#include "xfs_quota.h"
#include "xfs_reflink.h"
+#include "xfs_rtgroup.h"

#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1)

@@ -3345,6 +3346,7 @@ xlog_do_recover(
struct xfs_buf *bp = mp->m_sb_bp;
struct xfs_sb *sbp = &mp->m_sb;
xfs_agnumber_t old_agcount = sbp->sb_agcount;
+ xfs_rgnumber_t old_rgcount = sbp->sb_rgcount;
int error;

trace_xfs_log_recover(log, head_blk, tail_blk);
@@ -3398,6 +3400,19 @@ xlog_do_recover(
xfs_warn(mp, "Failed post-recovery per-ag init: %d", error);
return error;
}
+
+ if (sbp->sb_rgcount < old_rgcount) {
+ xfs_warn(mp, "rgcount shrink not supported");
+ return -EINVAL;
+ }
+
+ error = xfs_initialize_rtgroups(mp, old_rgcount, sbp->sb_rgcount,
+ sbp->sb_rextents);
+ if (error) {
+ xfs_warn(mp, "Failed post-recovery rtgroup init: %d", error);
+ return error;
+ }
+
mp->m_alloc_set_aside = xfs_alloc_set_aside(mp);

/* Normal transactions can now occur */
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 2dd2606fc7e3e4..9464eddf9212e9 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -36,6 +36,7 @@
#include "xfs_ag.h"
#include "xfs_rtbitmap.h"
#include "xfs_metafile.h"
+#include "xfs_rtgroup.h"
#include "scrub/stats.h"

static DEFINE_MUTEX(xfs_uuid_table_mutex);
@@ -834,10 +835,17 @@ xfs_mountfs(
goto out_free_dir;
}

+ error = xfs_initialize_rtgroups(mp, 0, sbp->sb_rgcount,
+ mp->m_sb.sb_rextents);
+ if (error) {
+ xfs_warn(mp, "Failed rtgroup init: %d", error);
+ goto out_free_perag;
+ }
+
if (XFS_IS_CORRUPT(mp, !sbp->sb_logblocks)) {
xfs_warn(mp, "no log defined");
error = -EFSCORRUPTED;
- goto out_free_perag;
+ goto out_free_rtgroup;
}

error = xfs_inodegc_register_shrinker(mp);
@@ -1072,6 +1080,8 @@ xfs_mountfs(
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp)
xfs_buftarg_drain(mp->m_logdev_targp);
xfs_buftarg_drain(mp->m_ddev_targp);
+ out_free_rtgroup:
+ xfs_free_rtgroups(mp, 0, mp->m_sb.sb_rgcount);
out_free_perag:
xfs_free_perag_range(mp, 0, mp->m_sb.sb_agcount);
out_free_dir:
@@ -1156,6 +1166,7 @@ xfs_unmountfs(
xfs_errortag_clearall(mp);
#endif
shrinker_free(mp->m_inodegc_shrinker);
+ xfs_free_rtgroups(mp, 0, mp->m_sb.sb_rgcount);
xfs_free_perag_range(mp, 0, mp->m_sb.sb_agcount);
xfs_errortag_del(mp);
xfs_error_sysfs_del(mp);
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 92f376d5c2a863..02e5eab959d015 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -125,6 +125,7 @@ typedef struct xfs_mount {
uint8_t m_agno_log; /* log #ag's */
uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
int8_t m_rtxblklog; /* log2 of rextsize, if possible */
+ int8_t m_rgblklog; /* log2 of rt group sz if possible */
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
uint m_blockwmask; /* blockwsize-1 */
@@ -153,12 +154,14 @@ typedef struct xfs_mount {
int m_logbsize; /* size of each log buffer */
uint m_rsumlevels; /* rt summary levels */
xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */
+ uint32_t m_rgblocks; /* size of rtgroup in rtblocks */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_qflags; /* quota status flags */
uint64_t m_features; /* active filesystem features */
uint64_t m_low_space[XFS_LOWSP_MAX];
uint64_t m_low_rtexts[XFS_LOWSP_MAX];
uint64_t m_rtxblkmask; /* rt extent block mask */
+ uint64_t m_rgblkmask; /* rt group block mask */
struct xfs_ino_geometry m_ino_geo; /* inode geometry */
struct xfs_trans_resv m_resv; /* precomputed res values */
/* low free space thresholds */
@@ -361,6 +364,16 @@ __XFS_HAS_FEAT(large_extent_counts, NREXT64)
__XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE)
__XFS_HAS_FEAT(metadir, METADIR)

+static inline bool xfs_has_rtgroups(struct xfs_mount *mp)
+{
+ return false;
+}
+
+static inline bool xfs_has_rtsb(struct xfs_mount *mp)
+{
+ return false;
+}
+
/*
* Some features are always on for v5 file systems, allow the compiler to
* eliminiate dead code when building without v4 support.
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 46a920b192d191..917c1a5e8f3180 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -27,6 +27,7 @@
#include "xfs_health.h"
#include "xfs_da_format.h"
#include "xfs_metafile.h"
+#include "xfs_rtgroup.h"

/*
* Return whether there are any free extents in the size range given
@@ -1136,6 +1137,7 @@ xfs_rtmount_inodes(
{
struct xfs_trans *tp;
struct xfs_sb *sbp = &mp->m_sb;
+ struct xfs_rtgroup *rtg = NULL;
int error;

error = xfs_trans_alloc_empty(mp, &tp);
@@ -1166,6 +1168,9 @@ xfs_rtmount_inodes(
if (error)
goto out_rele_summary;

+ while ((rtg = xfs_rtgroup_next(mp, rtg)))
+ rtg->rtg_extents = xfs_rtgroup_extents(mp, rtg_rgno(rtg));
+
error = xfs_alloc_rsum_cache(mp, sbp->sb_rbmblocks);
if (error)
goto out_rele_summary;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 59953278964de9..b2c12fd5ee41a3 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -2027,6 +2027,7 @@ xfs_init_fs_context(
return -ENOMEM;

spin_lock_init(&mp->m_sb_lock);
+
for (i = 0; i < XG_TYPE_MAX; i++)
xa_init(&mp->m_groups[i].xa);
mutex_init(&mp->m_growlock);
diff --git a/fs/xfs/xfs_trace.c b/fs/xfs/xfs_trace.c
index 061a3c43cd1d36..aaa0ea06910d88 100644
--- a/fs/xfs/xfs_trace.c
+++ b/fs/xfs/xfs_trace.c
@@ -48,6 +48,7 @@
#include "xfs_refcount.h"
#include "xfs_metafile.h"
#include "xfs_metadir.h"
+#include "xfs_rtgroup.h"

/*
* We include this last to have the helpers above available for the trace
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index cb747da43c9c6c..31e3a941445211 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -219,6 +219,7 @@ DEFINE_PERAG_REF_EVENT(xfs_perag_clear_inode_tag);
DEFINE_PERAG_REF_EVENT(xfs_reclaim_inodes_count);

TRACE_DEFINE_ENUM(XG_TYPE_AG);
+TRACE_DEFINE_ENUM(XG_TYPE_RTG);

DECLARE_EVENT_CLASS(xfs_group_class,
TP_PROTO(struct xfs_group *xg, unsigned long caller_ip),