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xfs: create routine to allocate and initialize a realtime rmap btree inode

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Create a library routine to allocate and initialize an empty realtime
rmapbt inode.  We'll use this for mkfs and repair.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2024-11-20 16:20:30 -08:00
parent 609a592865
commit 71b8acb42b
4 changed files with 71 additions and 2 deletions
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2
fs/xfs/libxfs/xfs_rtgroup.c
View File

@ -33,6 +33,7 @@
#include "xfs_rtbitmap.h"
#include "xfs_metafile.h"
#include "xfs_metadir.h"
#include "xfs_rtrmap_btree.h"
/* Find the first usable fsblock in this rtgroup. */
static inline uint32_t
@ -363,6 +364,7 @@ static const struct xfs_rtginode_ops xfs_rtginode_ops[XFS_RTGI_MAX] = {
* rtrmapbt predicate here.
*/
.enabled = xfs_has_rmapbt,
.create = xfs_rtrmapbt_create,
},
};

54
fs/xfs/libxfs/xfs_rtrmap_btree.c
View File

@ -832,3 +832,57 @@ xfs_iflush_rtrmap(
xfs_rtrmapbt_to_disk(ip->i_mount, ifp->if_broot, ifp->if_broot_bytes,
dfp, XFS_DFORK_SIZE(dip, ip->i_mount, XFS_DATA_FORK));
}
/*
* Create a realtime rmap btree inode.
*/
int
xfs_rtrmapbt_create(
struct xfs_rtgroup *rtg,
struct xfs_inode *ip,
struct xfs_trans *tp,
bool init)
{
struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_DATA_FORK);
struct xfs_mount *mp = ip->i_mount;
struct xfs_btree_block *broot;
ifp->if_format = XFS_DINODE_FMT_META_BTREE;
ASSERT(ifp->if_broot_bytes == 0);
ASSERT(ifp->if_bytes == 0);
/* Initialize the empty incore btree root. */
broot = xfs_broot_realloc(ifp, xfs_rtrmap_broot_space_calc(mp, 0, 0));
if (broot)
xfs_btree_init_block(mp, broot, &xfs_rtrmapbt_ops, 0, 0,
ip->i_ino);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE | XFS_ILOG_DBROOT);
return 0;
}
/*
* Initialize an rmap for a realtime superblock using the potentially updated
* rt geometry in the provided @mp.
*/
int
xfs_rtrmapbt_init_rtsb(
struct xfs_mount *mp,
struct xfs_rtgroup *rtg,
struct xfs_trans *tp)
{
struct xfs_rmap_irec rmap = {
.rm_blockcount = mp->m_sb.sb_rextsize,
.rm_owner = XFS_RMAP_OWN_FS,
};
struct xfs_btree_cur *cur;
int error;
ASSERT(xfs_has_rtsb(mp));
ASSERT(rtg_rgno(rtg) == 0);
cur = xfs_rtrmapbt_init_cursor(tp, rtg);
error = xfs_rmap_map_raw(cur, &rmap);
xfs_btree_del_cursor(cur, error);
return error;
}

5
fs/xfs/libxfs/xfs_rtrmap_btree.h
View File

@ -193,4 +193,9 @@ void xfs_rtrmapbt_to_disk(struct xfs_mount *mp, struct xfs_btree_block *rblock,
unsigned int dblocklen);
void xfs_iflush_rtrmap(struct xfs_inode *ip, struct xfs_dinode *dip);
int xfs_rtrmapbt_create(struct xfs_rtgroup *rtg, struct xfs_inode *ip,
struct xfs_trans *tp, bool init);
int xfs_rtrmapbt_init_rtsb(struct xfs_mount *mp, struct xfs_rtgroup *rtg,
struct xfs_trans *tp);
#endif /* __XFS_RTRMAP_BTREE_H__ */

12
fs/xfs/xfs_rtalloc.c
View File

@ -846,6 +846,13 @@ xfs_growfs_rt_init_rtsb(
mp->m_rtsb_bp = rtsb_bp;
error = xfs_bwrite(rtsb_bp);
xfs_buf_unlock(rtsb_bp);
if (error)
return error;
/* Initialize the rtrmap to reflect the rtsb. */
if (rtg_rmap(args->rtg) != NULL)
error = xfs_rtrmapbt_init_rtsb(nargs->mp, args->rtg, args->tp);
return error;
}
@ -894,8 +901,9 @@ xfs_growfs_rt_bmblock(
goto out_free;
nargs.tp = args.tp;
xfs_rtgroup_lock(args.rtg, XFS_RTGLOCK_BITMAP);
xfs_rtgroup_trans_join(args.tp, args.rtg, XFS_RTGLOCK_BITMAP);
xfs_rtgroup_lock(args.rtg, XFS_RTGLOCK_BITMAP | XFS_RTGLOCK_RMAP);
xfs_rtgroup_trans_join(args.tp, args.rtg,
XFS_RTGLOCK_BITMAP | XFS_RTGLOCK_RMAP);
/*
* Update the bitmap inode's size ondisk and incore. We need to update