From 532ff647d8303049e3913bf21e467b3bcc7f0bce Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Sun, 13 May 2018 23:10:06 -0700 Subject: [PATCH] xfs: turn ag header initialisation into a table driven operation There's still more cookie cutter code in setting up each AG header. Separate all the variables into a simple structure and iterate a table of header definitions to initialise everything. Signed-Off-By: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_fsops.c | 182 +++++++++++++++++++++++++++-------------------------- 1 file changed, 92 insertions(+), 90 deletions(-) diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index ec3c51e..fb283d2 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -282,12 +282,13 @@ xfs_agiblock_init( agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); } +typedef void (*aghdr_init_work_f)(struct xfs_mount *mp, struct xfs_buf *bp, + struct aghdr_init_data *id); static int xfs_growfs_init_aghdr( struct xfs_mount *mp, struct aghdr_init_data *id, - void (*work)(struct xfs_mount *, struct xfs_buf *, - struct aghdr_init_data *), + aghdr_init_work_f work, const struct xfs_buf_ops *ops) { @@ -304,6 +305,15 @@ xfs_growfs_init_aghdr( return 0; } +struct xfs_aghdr_grow_data { + xfs_daddr_t daddr; + size_t numblks; + const struct xfs_buf_ops *ops; + aghdr_init_work_f work; + xfs_btnum_t type; + bool need_init; +}; + /* * Write new AG headers to disk. Non-transactional, but written * synchronously so they are completed prior to the growfs transaction @@ -315,101 +325,93 @@ xfs_grow_ag_headers( struct aghdr_init_data *id) { + struct xfs_aghdr_grow_data aghdr_data[] = { + { /* AGF */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGF_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agf_buf_ops, + .work = &xfs_agfblock_init, + .need_init = true + }, + { /* AGFL */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGFL_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agfl_buf_ops, + .work = &xfs_agflblock_init, + .need_init = true + }, + { /* AGI */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGI_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agi_buf_ops, + .work = &xfs_agiblock_init, + .need_init = true + }, + { /* BNO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_BNO_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_allocbt_buf_ops, + .work = &xfs_bnoroot_init, + .need_init = true + }, + { /* CNT root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_CNT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_allocbt_buf_ops, + .work = &xfs_cntroot_init, + .need_init = true + }, + { /* INO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_IBT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_inobt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_INO, + .need_init = true + }, + { /* FINO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_FIBT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_inobt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_FINO, + .need_init = xfs_sb_version_hasfinobt(&mp->m_sb) + }, + { /* RMAP root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_RMAP_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_rmapbt_buf_ops, + .work = &xfs_rmaproot_init, + .need_init = xfs_sb_version_hasrmapbt(&mp->m_sb) + }, + { /* REFC root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, xfs_refc_block(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_refcountbt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_REFC, + .need_init = xfs_sb_version_hasreflink(&mp->m_sb) + }, + { /* NULL terminating block */ + .daddr = XFS_BUF_DADDR_NULL, + } + }; + struct xfs_aghdr_grow_data *dp; int error = 0; /* Account for AG free space in new AG */ id->nfree += id->agsize - mp->m_ag_prealloc_blocks; + for (dp = &aghdr_data[0]; dp->daddr != XFS_BUF_DADDR_NULL; dp++) { + if (!dp->need_init) + continue; - /* AG freespace header block */ - id->daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGF_DADDR(mp)); - id->numblks = XFS_FSS_TO_BB(mp, 1); - error = xfs_growfs_init_aghdr(mp, id, xfs_agfblock_init, - &xfs_agf_buf_ops); - if (error) - goto out_error; - - /* AG freelist header block */ - id->daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGFL_DADDR(mp)); - id->numblks = XFS_FSS_TO_BB(mp, 1); - error = xfs_growfs_init_aghdr(mp, id, xfs_agflblock_init, - &xfs_agfl_buf_ops); - if (error) - goto out_error; - - /* AG inode header block */ - id->daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGI_DADDR(mp)); - id->numblks = XFS_FSS_TO_BB(mp, 1); - error = xfs_growfs_init_aghdr(mp, id, xfs_agiblock_init, - &xfs_agi_buf_ops); - if (error) - goto out_error; - - - /* BNO btree root block */ - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_BNO_BLOCK(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - error = xfs_growfs_init_aghdr(mp, id, xfs_bnoroot_init, - &xfs_allocbt_buf_ops); - if (error) - goto out_error; - - - /* CNT btree root block */ - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_CNT_BLOCK(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - error = xfs_growfs_init_aghdr(mp, id, xfs_cntroot_init, - &xfs_allocbt_buf_ops); - if (error) - goto out_error; - - /* RMAP btree root block */ - if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_RMAP_BLOCK(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - error = xfs_growfs_init_aghdr(mp, id, xfs_rmaproot_init, - &xfs_rmapbt_buf_ops); - if (error) - goto out_error; - - } - - /* INO btree root block */ - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_IBT_BLOCK(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - id->type = XFS_BTNUM_INO; - error = xfs_growfs_init_aghdr(mp, id, xfs_btroot_init, - &xfs_inobt_buf_ops); - if (error) - goto out_error; - - - /* - * FINO btree root block - */ - if (xfs_sb_version_hasfinobt(&mp->m_sb)) { - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_FIBT_BLOCK(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - id->type = XFS_BTNUM_FINO; - error = xfs_growfs_init_aghdr(mp, id, xfs_btroot_init, - &xfs_inobt_buf_ops); - if (error) - goto out_error; - } - - /* - * refcount btree root block - */ - if (xfs_sb_version_hasreflink(&mp->m_sb)) { - id->daddr = XFS_AGB_TO_DADDR(mp, id->agno, xfs_refc_block(mp)); - id->numblks = BTOBB(mp->m_sb.sb_blocksize); - id->type = XFS_BTNUM_REFC; - error = xfs_growfs_init_aghdr(mp, id, xfs_btroot_init, - &xfs_refcountbt_buf_ops); + id->daddr = dp->daddr; + id->numblks = dp->numblks; + id->type = dp->type; + error = xfs_growfs_init_aghdr(mp, id, dp->work, dp->ops); if (error) - goto out_error; + break; } - -out_error: return error; } -- 2.7.4