From 532ff647d8303049e3913bf21e467b3bcc7f0bce Mon Sep 17 00:00:00 2001
From: Dave Chinner <dchinner@redhat.com>
Date: Sun, 13 May 2018 23:10:06 -0700
Subject: [PATCH] xfs: turn ag header initialisation into a table driven
operation
Git-commit: 532ff647d8303049e3913bf21e467b3bcc7f0bce
Patch-mainline: v4.18-rc1
References: bsc#1191500
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 <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Anthony Iliopoulos <ailiop@suse.com>
---
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 ec3c51ee8134..fb283d2cf42b 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;
}
--
2.33.0