diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_rtrmap_btree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_rtrmap_btree.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_rtrmap_btree.c b/fs/xfs/libxfs/xfs_rtrmap_btree.c index 80f6d3b34b96..10a487fd81be 100644 --- a/fs/xfs/libxfs/xfs_rtrmap_btree.c +++ b/fs/xfs/libxfs/xfs_rtrmap_btree.c @@ -27,6 +27,7 @@ #include "xfs_extent_busy.h" #include "xfs_rtgroup.h" #include "xfs_bmap.h" +#include "xfs_imeta.h" static struct kmem_cache *xfs_rtrmapbt_cur_cache; @@ -869,3 +870,45 @@ 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. + * + * Regardless of the return value, the caller must clean up @ic. If a new + * inode is returned through *ipp, the caller must finish setting up the incore + * inode and release it. + */ +int +xfs_rtrmapbt_create( + struct xfs_trans **tpp, + struct xfs_imeta_path *path, + struct xfs_imeta_update *upd, + struct xfs_inode **ipp) +{ + struct xfs_mount *mp = (*tpp)->t_mountp; + struct xfs_ifork *ifp; + struct xfs_inode *ip; + int error; + + *ipp = NULL; + + error = xfs_imeta_create(tpp, path, S_IFREG, 0, &ip, upd); + if (error) + return error; + + ifp = &ip->i_df; + 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_int(mp, ifp->if_broot, + XFS_BUF_DADDR_NULL, XFS_BTNUM_RTRMAP, 0, 0, ip->i_ino, + XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS); + xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE | XFS_ILOG_DBROOT); + + *ipp = ip; + return 0; +} |