* [PATCH] xfs: update incore per-AG inode count
@ 2018-06-09 2:26 Darrick J. Wong
2018-06-11 12:14 ` Brian Foster
0 siblings, 1 reply; 2+ messages in thread
From: Darrick J. Wong @ 2018-06-09 2:26 UTC (permalink / raw)
To: xfs
From: Darrick J. Wong <darrick.wong@oracle.com>
For whatever reason we never actually update pagi_count (the in-core
perag inode count) when we allocate or free inode chunks. Online scrub
is going to use it, so we need to fix the accounting.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_ialloc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 3f551eb29157..a64f71b614cc 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -897,6 +897,7 @@ xfs_ialloc_ag_alloc(
be32_add_cpu(&agi->agi_freecount, newlen);
pag = xfs_perag_get(args.mp, agno);
pag->pagi_freecount += newlen;
+ pag->pagi_count += newlen;
xfs_perag_put(pag);
agi->agi_newino = cpu_to_be32(newino);
@@ -1991,6 +1992,7 @@ xfs_difree_inobt(
xfs_ialloc_log_agi(tp, agbp, XFS_AGI_COUNT | XFS_AGI_FREECOUNT);
pag = xfs_perag_get(mp, agno);
pag->pagi_freecount -= ilen - 1;
+ pag->pagi_count -= ilen;
xfs_perag_put(pag);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] xfs: update incore per-AG inode count
2018-06-09 2:26 [PATCH] xfs: update incore per-AG inode count Darrick J. Wong
@ 2018-06-11 12:14 ` Brian Foster
0 siblings, 0 replies; 2+ messages in thread
From: Brian Foster @ 2018-06-11 12:14 UTC (permalink / raw)
To: Darrick J. Wong; +Cc: xfs
On Fri, Jun 08, 2018 at 07:26:53PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
>
> For whatever reason we never actually update pagi_count (the in-core
> perag inode count) when we allocate or free inode chunks. Online scrub
> is going to use it, so we need to fix the accounting.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
Interesting, I guess it hasn't been a problem because the value is only
used in a particular mount scenario right after it is initialized from
disk. Anyways:
Reviewed-by: Brian Foster <bfoster@redhat.com>
> fs/xfs/libxfs/xfs_ialloc.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
> index 3f551eb29157..a64f71b614cc 100644
> --- a/fs/xfs/libxfs/xfs_ialloc.c
> +++ b/fs/xfs/libxfs/xfs_ialloc.c
> @@ -897,6 +897,7 @@ xfs_ialloc_ag_alloc(
> be32_add_cpu(&agi->agi_freecount, newlen);
> pag = xfs_perag_get(args.mp, agno);
> pag->pagi_freecount += newlen;
> + pag->pagi_count += newlen;
> xfs_perag_put(pag);
> agi->agi_newino = cpu_to_be32(newino);
>
> @@ -1991,6 +1992,7 @@ xfs_difree_inobt(
> xfs_ialloc_log_agi(tp, agbp, XFS_AGI_COUNT | XFS_AGI_FREECOUNT);
> pag = xfs_perag_get(mp, agno);
> pag->pagi_freecount -= ilen - 1;
> + pag->pagi_count -= ilen;
> xfs_perag_put(pag);
> xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen);
> xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
> --
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