Add a field to the superblock to record the rt rmap inode and load
it at mount time.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
include/xfs_mount.h | 1 +
libxfs/init.c | 6 ++++--
libxfs/xfs_format.h | 10 +++++++++-
libxfs/xfs_inode_fork.c | 11 +++++++++++
libxfs/xfs_rtrmap_btree.c | 2 +-
libxfs/xfs_sb.c | 2 ++
6 files changed, 28 insertions(+), 4 deletions(-)
diff --git a/include/xfs_mount.h b/include/xfs_mount.h
index fcc0d95..8e9c9f0 100644
--- a/include/xfs_mount.h
+++ b/include/xfs_mount.h
@@ -42,6 +42,7 @@ typedef struct xfs_mount {
uint m_rsumsize; /* size of rt summary, bytes */
struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
struct xfs_inode *m_rsumip; /* pointer to summary inode */
+ struct xfs_inode *m_rrmapip; /* realtime rmap inode */
struct xfs_buftarg *m_ddev_targp;
struct xfs_buftarg *m_logdev_targp;
struct xfs_buftarg *m_rtdev_targp;
diff --git a/libxfs/init.c b/libxfs/init.c
index e3f8a5d..3217ec7 100644
--- a/libxfs/init.c
+++ b/libxfs/init.c
@@ -458,7 +458,7 @@ rtmount_init(
(uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels *
sbp->sb_rbmblocks;
mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize);
- mp->m_rbmip = mp->m_rsumip = NULL;
+ mp->m_rbmip = mp->m_rsumip = mp->m_rrmapip = NULL;
/*
* Allow debugger to be run without the realtime device present.
@@ -830,11 +830,13 @@ libxfs_mount(
void
libxfs_rtmount_destroy(xfs_mount_t *mp)
{
+ if (mp->m_rrmapip)
+ IRELE(mp->m_rrmapip);
if (mp->m_rsumip)
IRELE(mp->m_rsumip);
if (mp->m_rbmip)
IRELE(mp->m_rbmip);
- mp->m_rsumip = mp->m_rbmip = NULL;
+ mp->m_rsumip = mp->m_rbmip = mp->m_rrmapip = NULL;
}
/*
diff --git a/libxfs/xfs_format.h b/libxfs/xfs_format.h
index 82ff6fc..5fb5e52 100644
--- a/libxfs/xfs_format.h
+++ b/libxfs/xfs_format.h
@@ -183,6 +183,7 @@ typedef struct xfs_sb {
xfs_ino_t sb_pquotino; /* project quota inode */
xfs_lsn_t sb_lsn; /* last write sequence */
uuid_t sb_meta_uuid; /* metadata file system unique id */
+ xfs_ino_t sb_rrmapino; /* realtime reverse map inode */
/* must be padded to 64 bit alignment */
} xfs_sb_t;
@@ -270,6 +271,7 @@ typedef struct xfs_dsb {
__be64 sb_pquotino; /* project quota inode */
__be64 sb_lsn; /* last write sequence */
uuid_t sb_meta_uuid; /* metadata file system unique id */
+ __be64 sb_rrmapino; /* realtime reverse map inode */
/* must be padded to 64 bit alignment */
} xfs_dsb_t;
@@ -553,6 +555,11 @@ static inline bool xfs_sb_version_hasrmapbt(struct xfs_sb *sbp)
(sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_RMAPBT);
}
+static inline bool xfs_sb_version_hasrtrmapbt(struct xfs_sb *sbp)
+{
+ return sbp->sb_rblocks > 0 && xfs_sb_version_hasrmapbt(sbp);
+}
+
static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp)
{
return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5) &&
@@ -948,7 +955,8 @@ typedef enum xfs_dinode_fmt {
XFS_DINODE_FMT_LOCAL, /* bulk data */
XFS_DINODE_FMT_EXTENTS, /* struct xfs_bmbt_rec */
XFS_DINODE_FMT_BTREE, /* struct xfs_bmdr_block */
- XFS_DINODE_FMT_UUID /* uuid_t */
+ XFS_DINODE_FMT_UUID, /* uuid_t */
+ XFS_DINODE_FMT_RMAP, /* reverse mapping btree */
} xfs_dinode_fmt_t;
/*
diff --git a/libxfs/xfs_inode_fork.c b/libxfs/xfs_inode_fork.c
index 6ed0254..b006e2f 100644
--- a/libxfs/xfs_inode_fork.c
+++ b/libxfs/xfs_inode_fork.c
@@ -191,6 +191,13 @@ xfs_iformat_fork(
case XFS_DINODE_FMT_BTREE:
error = xfs_iformat_btree(ip, dip, XFS_DATA_FORK);
break;
+ case XFS_DINODE_FMT_RMAP:
+ if (!xfs_sb_version_hasrtrmapbt(&ip->i_mount->m_sb))
+ return -EFSCORRUPTED;
+ if (ip->i_ino != ip->i_mount->m_sb.sb_rrmapino)
+ return -EFSCORRUPTED;
+ /* to be implemented later */
+ break;
default:
XFS_ERROR_REPORT("xfs_iformat(6)", XFS_ERRLEVEL_LOW,
ip->i_mount);
@@ -793,6 +800,10 @@ xfs_iflush_fork(
}
break;
+ case XFS_DINODE_FMT_RMAP:
+ /* to be implemented later */
+ break;
+
default:
ASSERT(0);
break;
diff --git a/libxfs/xfs_rtrmap_btree.c b/libxfs/xfs_rtrmap_btree.c
index 66c9190..e4dbe88 100644
--- a/libxfs/xfs_rtrmap_btree.c
+++ b/libxfs/xfs_rtrmap_btree.c
@@ -352,7 +352,7 @@ xfs_rtrmapbt_verify(
if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
return false;
- if (!xfs_btree_lblock_v5hdr_verify(bp, XFS_RMAP_OWN_UNKNOWN))
+ if (!xfs_btree_lblock_v5hdr_verify(bp, mp->m_sb.sb_rrmapino))
return false;
level = be16_to_cpu(block->bb_level);
if (level > mp->m_rtrmap_maxlevels)
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index 2e6afe9..14ec707 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -426,6 +426,7 @@ __xfs_sb_from_disk(
uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid);
else
uuid_copy(&to->sb_meta_uuid, &from->sb_uuid);
+ to->sb_rrmapino = be64_to_cpu(from->sb_rrmapino);
/* Convert on-disk flags to in-memory flags? */
if (convert_xquota)
xfs_sb_quota_from_disk(to);
@@ -569,6 +570,7 @@ xfs_sb_to_disk(
to->sb_lsn = cpu_to_be64(from->sb_lsn);
if (xfs_sb_version_hasmetauuid(from))
uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid);
+ to->sb_rrmapino = cpu_to_be64(from->sb_rrmapino);
}
}
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