From 98709b21804a559447501913b982ae521000fcf4 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Tue, 28 May 2024 21:11:55 -0700 Subject: [PATCH] xfs: create routine to allocate and initialize a realtime rmap btree inode 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 --- libxfs/xfs_rtgroup.c | 2 ++ libxfs/xfs_rtrmap_btree.c | 44 +++++++++++++++++++++++++++++++++++++++ libxfs/xfs_rtrmap_btree.h | 3 +++ 3 files changed, 49 insertions(+) diff --git a/libxfs/xfs_rtgroup.c b/libxfs/xfs_rtgroup.c index caaf1afe1..97fa35351 100644 --- a/libxfs/xfs_rtgroup.c +++ b/libxfs/xfs_rtgroup.c @@ -31,6 +31,7 @@ #include "xfs_rtbitmap.h" #include "xfs_metafile.h" #include "xfs_metadir.h" +#include "xfs_rtrmap_btree.h" /* * Passive reference counting access wrappers to the rtgroup structures. If @@ -564,6 +565,7 @@ static const struct xfs_rtginode_ops xfs_rtginode_ops[XFS_RTG_MAX] = { .name = "rmap", .format = XFS_DINODE_FMT_RMAP, .enabled = xfs_has_rtrmapbt, + .create = xfs_rtrmapbt_create, }, }; diff --git a/libxfs/xfs_rtrmap_btree.c b/libxfs/xfs_rtrmap_btree.c index c3688473b..809a56236 100644 --- a/libxfs/xfs_rtrmap_btree.c +++ b/libxfs/xfs_rtrmap_btree.c @@ -803,3 +803,47 @@ 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; + int error = 0; + + ifp->if_format = XFS_DINODE_FMT_RMAP; + ASSERT(ifp->if_broot_bytes == 0); + ASSERT(ifp->if_bytes == 0); + + /* Initialize the empty incore btree root. */ + xfs_iroot_alloc(ip, XFS_DATA_FORK, + xfs_rtrmap_broot_space_calc(mp, 0, 0)); + xfs_btree_init_block(mp, ifp->if_broot, &xfs_rtrmapbt_ops, 0, 0, + ip->i_ino); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE | XFS_ILOG_DBROOT); + + if (init && xfs_has_rtsb(mp) && rtg->rtg_rgno == 0) { + struct xfs_rmap_irec rmap = { + .rm_blockcount = mp->m_sb.sb_rextsize, + .rm_owner = XFS_RMAP_OWN_FS, + }; + struct xfs_btree_cur *cur; + + /* + * Add an rmap the rtgroup superblock; this had better + * fit in the data fork. + */ + cur = xfs_rtrmapbt_init_cursor(mp, tp, rtg, ip); + error = xfs_rmap_map_raw(cur, &rmap); + xfs_btree_del_cursor(cur, error); + } + + return error; +} diff --git a/libxfs/xfs_rtrmap_btree.h b/libxfs/xfs_rtrmap_btree.h index 39471df84..33b79daa8 100644 --- a/libxfs/xfs_rtrmap_btree.h +++ b/libxfs/xfs_rtrmap_btree.h @@ -194,4 +194,7 @@ 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); + #endif /* __XFS_RTRMAP_BTREE_H__ */ -- 2.50.1