From: Christoph Hellwig <hch@infradead.org>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: linux-xfs@vger.kernel.org, hch@infradead.org, david@fromorbit.com
Subject: Re: [PATCH 02/12] xfs: make xfs_buf_read return an error code
Date: Thu, 23 Jan 2020 14:20:15 -0800 [thread overview]
Message-ID: <20200123222015.GA15904@infradead.org> (raw)
In-Reply-To: <157976532333.2388944.17938500318924937596.stgit@magnolia>
On Wed, Jan 22, 2020 at 11:42:03PM -0800, Darrick J. Wong wrote:
> - return -ENOMEM;
> + error = xfs_buf_read(mp->m_ddev_targp, dblkno, dblkcnt,
> + 0, &bp, &xfs_attr3_rmt_buf_ops);
> + if (error)
> + return error;
> error = bp->b_error;
> if (error) {
> xfs_buf_ioerror_alert(bp, __func__);
This still has the bogus b_error check where it should just check the
error and report it based on the return value.
> diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
> index 56e081dd1d96..fb60c36a8a5b 100644
> --- a/fs/xfs/xfs_buf.h
> +++ b/fs/xfs/xfs_buf.h
> @@ -213,16 +213,25 @@ xfs_buf_get(
> return xfs_buf_get_map(target, &map, 1, 0);
> }
>
> -static inline struct xfs_buf *
> +static inline int
> xfs_buf_read(
> struct xfs_buftarg *target,
> xfs_daddr_t blkno,
> size_t numblks,
> xfs_buf_flags_t flags,
> + struct xfs_buf **bpp,
> const struct xfs_buf_ops *ops)
> {
> + struct xfs_buf *bp;
> DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
> - return xfs_buf_read_map(target, &map, 1, flags, ops);
> +
> + *bpp = NULL;
> + bp = xfs_buf_read_map(target, &map, 1, flags, ops);
> + if (!bp)
> + return -ENOMEM;
> +
> + *bpp = bp;
> + return 0;
> }
>
> static inline void
> diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
> index 0d683fb96396..b29806846916 100644
> --- a/fs/xfs/xfs_log_recover.c
> +++ b/fs/xfs/xfs_log_recover.c
> @@ -2745,10 +2745,10 @@ xlog_recover_buffer_pass2(
> if (buf_f->blf_flags & XFS_BLF_INODE_BUF)
> buf_flags |= XBF_UNMAPPED;
>
> - bp = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len,
> - buf_flags, NULL);
> - if (!bp)
> - return -ENOMEM;
> + error = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len,
> + buf_flags, &bp, NULL);
> + if (error)
> + return error;
> error = bp->b_error;
> if (error) {
.. and same here.
next prev parent reply other threads:[~2020-01-23 22:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-23 7:41 [PATCH v4 00/12] xfs: make buffer functions return error codes Darrick J. Wong
2020-01-23 7:41 ` [PATCH 01/12] xfs: make xfs_buf_alloc return an error code Darrick J. Wong
2020-01-24 0:47 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 02/12] xfs: make xfs_buf_read " Darrick J. Wong
2020-01-23 22:20 ` Christoph Hellwig [this message]
2020-01-24 0:16 ` Darrick J. Wong
2020-01-24 1:08 ` Darrick J. Wong
2020-01-24 0:49 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 03/12] xfs: make xfs_buf_get " Darrick J. Wong
2020-01-24 0:50 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 04/12] xfs: make xfs_buf_get_uncached " Darrick J. Wong
2020-01-24 0:53 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 05/12] xfs: make xfs_buf_read_map " Darrick J. Wong
2020-01-23 22:24 ` Christoph Hellwig
2020-01-24 0:23 ` Darrick J. Wong
2020-01-24 4:59 ` Darrick J. Wong
2020-01-24 1:31 ` Dave Chinner
2020-01-24 4:34 ` Darrick J. Wong
2020-01-23 7:42 ` [PATCH 06/12] xfs: make xfs_buf_get_map " Darrick J. Wong
2020-01-24 1:41 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 07/12] xfs: make xfs_trans_get_buf_map " Darrick J. Wong
2020-01-24 1:44 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 08/12] xfs: make xfs_trans_get_buf " Darrick J. Wong
2020-01-24 1:48 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 09/12] xfs: remove the xfs_btree_get_buf[ls] functions Darrick J. Wong
2020-01-24 1:50 ` Dave Chinner
2020-01-23 7:42 ` [PATCH 10/12] xfs: make xfs_*read_agf return EAGAIN to ALLOC_FLAG_TRYLOCK callers Darrick J. Wong
2020-01-24 2:00 ` Dave Chinner
2020-01-24 4:47 ` Darrick J. Wong
2020-01-23 7:43 ` [PATCH 11/12] xfs: remove unnecessary null pointer checks from _read_agf callers Darrick J. Wong
2020-01-24 2:01 ` Dave Chinner
2020-01-23 7:43 ` [PATCH 12/12] xfs: fix xfs_buf_ioerror_alert location reporting Darrick J. Wong
2020-01-24 2:07 ` Dave Chinner
2020-01-24 4:21 ` Darrick J. Wong
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