From: Chandan Babu R <chandanrlinux@gmail.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 07/15] xfs: move the di_flushiter field to struct xfs_inode
Date: Mon, 22 Jun 2020 15:19:59 +0530 [thread overview]
Message-ID: <5207261.z8F0QaGh9B@garuda> (raw)
In-Reply-To: <20200620071102.462554-8-hch@lst.de>
On Saturday 20 June 2020 12:40:54 PM IST Christoph Hellwig wrote:
> In preparation of removing the historic icinode struct, move the
> flushiter field into the containing xfs_inode structure.
>
The changes look good to me.
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> fs/xfs/libxfs/xfs_inode_buf.c | 4 ++--
> fs/xfs/libxfs/xfs_inode_buf.h | 1 -
> fs/xfs/xfs_icache.c | 2 +-
> fs/xfs/xfs_inode.c | 19 +++++++++----------
> fs/xfs/xfs_inode.h | 1 +
> fs/xfs/xfs_inode_item.c | 2 +-
> 6 files changed, 14 insertions(+), 15 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
> index 860e35611e001a..03bd7cdd0ddc81 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.c
> +++ b/fs/xfs/libxfs/xfs_inode_buf.c
> @@ -205,7 +205,7 @@ xfs_inode_from_disk(
> * inode. If the inode is unused, mode is zero and we shouldn't mess
> * with the unitialized part of it.
> */
> - to->di_flushiter = be16_to_cpu(from->di_flushiter);
> + ip->i_flushiter = be16_to_cpu(from->di_flushiter);
> inode->i_generation = be32_to_cpu(from->di_gen);
> inode->i_mode = be16_to_cpu(from->di_mode);
> if (!inode->i_mode)
> @@ -329,7 +329,7 @@ xfs_inode_to_disk(
> to->di_flushiter = 0;
> } else {
> to->di_version = 2;
> - to->di_flushiter = cpu_to_be16(from->di_flushiter);
> + to->di_flushiter = cpu_to_be16(ip->i_flushiter);
> }
> }
>
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h
> index 663a97fa78f05f..8cc96f2766ff4f 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.h
> +++ b/fs/xfs/libxfs/xfs_inode_buf.h
> @@ -16,7 +16,6 @@ struct xfs_dinode;
> * format specific structures at the appropriate time.
> */
> struct xfs_icdinode {
> - uint16_t di_flushiter; /* incremented on flush */
> uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
> uint32_t di_dmevmask; /* DMIG event mask */
> uint16_t di_dmstate; /* DMIG state info */
> diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
> index ad01e694f3ab9b..e6b40f7035aa5a 100644
> --- a/fs/xfs/xfs_icache.c
> +++ b/fs/xfs/xfs_icache.c
> @@ -521,7 +521,7 @@ xfs_iget_cache_miss(
> * simply build the new inode core with a random generation number.
> *
> * For version 4 (and older) superblocks, log recovery is dependent on
> - * the di_flushiter field being initialised from the current on-disk
> + * the i_flushiter field being initialised from the current on-disk
> * value and hence we must also read the inode off disk even when
> * initializing new inodes.
> */
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index f1893824cd4e2f..5e0336e0dbae44 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -3765,16 +3765,15 @@ xfs_iflush_int(
> }
>
> /*
> - * Inode item log recovery for v2 inodes are dependent on the
> - * di_flushiter count for correct sequencing. We bump the flush
> - * iteration count so we can detect flushes which postdate a log record
> - * during recovery. This is redundant as we now log every change and
> - * hence this can't happen but we need to still do it to ensure
> - * backwards compatibility with old kernels that predate logging all
> - * inode changes.
> + * Inode item log recovery for v2 inodes are dependent on the flushiter
> + * count for correct sequencing. We bump the flush iteration count so
> + * we can detect flushes which postdate a log record during recovery.
> + * This is redundant as we now log every change and hence this can't
> + * happen but we need to still do it to ensure backwards compatibility
> + * with old kernels that predate logging all inode changes.
> */
> if (!xfs_sb_version_has_v3inode(&mp->m_sb))
> - ip->i_d.di_flushiter++;
> + ip->i_flushiter++;
>
> /*
> * If there are inline format data / attr forks attached to this inode,
> @@ -3795,8 +3794,8 @@ xfs_iflush_int(
> xfs_inode_to_disk(ip, dip, iip->ili_item.li_lsn);
>
> /* Wrap, we never let the log put out DI_MAX_FLUSH */
> - if (ip->i_d.di_flushiter == DI_MAX_FLUSH)
> - ip->i_d.di_flushiter = 0;
> + if (ip->i_flushiter == DI_MAX_FLUSH)
> + ip->i_flushiter = 0;
>
> xfs_iflush_fork(ip, dip, iip, XFS_DATA_FORK);
> if (XFS_IFORK_Q(ip))
> diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
> index 2cdb7b6b298852..581618ea1156da 100644
> --- a/fs/xfs/xfs_inode.h
> +++ b/fs/xfs/xfs_inode.h
> @@ -59,6 +59,7 @@ typedef struct xfs_inode {
> uint32_t i_projid; /* owner's project id */
> xfs_extlen_t i_extsize; /* basic/minimum extent size */
> xfs_extlen_t i_cowextsize; /* basic cow extent size */
> + uint16_t i_flushiter; /* incremented on flush */
>
> struct xfs_icdinode i_d; /* most of ondisk inode */
>
> diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
> index ab0d8cf8ceb6ab..8357fe37d3eb8a 100644
> --- a/fs/xfs/xfs_inode_item.c
> +++ b/fs/xfs/xfs_inode_item.c
> @@ -351,7 +351,7 @@ xfs_inode_to_log_dinode(
> to->di_flushiter = 0;
> } else {
> to->di_version = 2;
> - to->di_flushiter = from->di_flushiter;
> + to->di_flushiter = ip->i_flushiter;
> }
> }
>
>
--
chandan
next prev parent reply other threads:[~2020-06-22 9:50 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-20 7:10 xfs inode structure cleanups v2 Christoph Hellwig
2020-06-20 7:10 ` [PATCH 01/15] xfs: don't clear the "dinode core" in xfs_inode_alloc Christoph Hellwig
2020-06-22 7:11 ` Chandan Babu R
2020-06-30 17:58 ` Darrick J. Wong
2020-07-02 18:34 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 02/15] xfs: move the di_projid field to struct xfs_inode Christoph Hellwig
2020-06-22 7:55 ` Chandan Babu R
2020-06-30 17:44 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 03/15] xfs: move the di_size " Christoph Hellwig
2020-06-22 9:24 ` Chandan Babu R
2020-06-30 17:45 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 04/15] xfs: move the di_nblocks " Christoph Hellwig
2020-06-22 9:33 ` Chandan Babu R
2020-06-30 17:47 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 05/15] xfs: move the di_extsize " Christoph Hellwig
2020-06-22 9:36 ` Chandan Babu R
2020-06-30 17:47 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 06/15] xfs: move the di_cowextsize " Christoph Hellwig
2020-06-22 9:47 ` Chandan Babu R
2020-06-30 17:48 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 07/15] xfs: move the di_flushiter " Christoph Hellwig
2020-06-22 9:49 ` Chandan Babu R [this message]
2020-06-30 17:48 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 08/15] xfs: use a union for i_cowextsize and i_flushiter Christoph Hellwig
2020-06-22 10:53 ` Chandan Babu R
2020-06-30 17:51 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 09/15] xfs: cleanup xfs_fill_fsxattr Christoph Hellwig
2020-06-22 11:01 ` Chandan Babu R
2020-06-30 17:52 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 10/15] xfs: move the di_forkoff field to struct xfs_inode Christoph Hellwig
2020-06-22 12:15 ` Chandan Babu R
2020-06-30 17:52 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 11/15] xfs: move the di_flags " Christoph Hellwig
2020-06-22 12:41 ` Chandan Babu R
2020-06-30 17:53 ` Darrick J. Wong
2020-06-20 7:10 ` [PATCH 12/15] xfs: move the di_flags2 " Christoph Hellwig
2020-06-22 12:51 ` Chandan Babu R
2020-06-22 13:23 ` Chandan Babu R
2020-06-24 7:25 ` Christoph Hellwig
2020-06-24 14:03 ` Darrick J. Wong
2020-06-24 14:10 ` Christoph Hellwig
2020-06-30 17:54 ` Darrick J. Wong
2020-06-20 7:11 ` [PATCH 13/15] xfs: move the di_crtime " Christoph Hellwig
2020-06-22 12:54 ` Chandan Babu R
2020-06-30 17:55 ` Darrick J. Wong
2020-06-20 7:11 ` [PATCH 14/15] xfs: move the di_dmevmask " Christoph Hellwig
2020-06-22 12:58 ` Chandan Babu R
2020-06-30 17:55 ` Darrick J. Wong
2020-06-20 7:11 ` [PATCH 15/15] xfs: move the di_dmstate " Christoph Hellwig
2020-06-22 13:18 ` Chandan Babu R
2020-06-30 17:56 ` Darrick J. Wong
2020-06-30 18:01 ` xfs inode structure cleanups v2 Darrick J. Wong
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