From: Dave Chinner <[email protected]>
To: Hao Xu <[email protected]>
Cc: [email protected], Jens Axboe <[email protected]>,
Dominique Martinet <[email protected]>,
Pavel Begunkov <[email protected]>,
Christian Brauner <[email protected]>,
Alexander Viro <[email protected]>,
Stefan Roesch <[email protected]>, Clay Harris <[email protected]>,
"Darrick J . Wong" <[email protected]>,
[email protected], [email protected],
[email protected], Wanpeng Li <[email protected]>
Subject: Re: [PATCH 2/7] xfs: add nowait support for xfs_seek_iomap_begin()
Date: Thu, 27 Jul 2023 07:55:47 +1000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Wed, Jul 26, 2023 at 06:25:58PM +0800, Hao Xu wrote:
> From: Hao Xu <[email protected]>
>
> To support nowait llseek(), IOMAP_NOWAIT semantics should be respected.
> In xfs, xfs_seek_iomap_begin() is the only place which may be blocked
> by ilock and extent loading. Let's turn it into trylock logic just like
> what we've done in xfs_readdir().
>
> Signed-off-by: Hao Xu <[email protected]>
> ---
> fs/xfs/xfs_iomap.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
> index 18c8f168b153..bbd7c6b27701 100644
> --- a/fs/xfs/xfs_iomap.c
> +++ b/fs/xfs/xfs_iomap.c
> @@ -1294,7 +1294,9 @@ xfs_seek_iomap_begin(
> if (xfs_is_shutdown(mp))
> return -EIO;
>
> - lockmode = xfs_ilock_data_map_shared(ip);
> + lockmode = xfs_ilock_data_map_shared_generic(ip, flags & IOMAP_NOWAIT);
What does this magic XFS function I can't find anywhere in this
patch set do?
-Dave.
--
Dave Chinner
[email protected]
next prev parent reply other threads:[~2023-07-26 21:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-26 10:25 [RFC 0/7] io_uring lseek Hao Xu
2023-07-26 10:25 ` [PATCH 1/7] iomap: merge iomap_seek_hole() and iomap_seek_data() Hao Xu
2023-07-26 21:50 ` Dave Chinner
2023-07-27 12:10 ` Hao Xu
2023-07-26 10:25 ` [PATCH 2/7] xfs: add nowait support for xfs_seek_iomap_begin() Hao Xu
2023-07-26 21:55 ` Dave Chinner [this message]
2023-07-26 22:14 ` Darrick J. Wong
2023-07-27 12:17 ` Hao Xu
2023-07-26 10:25 ` [PATCH 3/7] add nowait parameter for iomap_seek() Hao Xu
2023-07-26 22:01 ` Dave Chinner
2023-07-26 10:26 ` [PATCH 4/7] add llseek_nowait() for struct file_operations Hao Xu
2023-07-27 13:25 ` Matthew Wilcox
2023-07-26 10:26 ` [PATCH 5/7] add llseek_nowait support for xfs Hao Xu
2023-07-26 22:14 ` Dave Chinner
2023-07-27 12:26 ` Hao Xu
2023-07-26 10:26 ` [PATCH 6/7] add vfs_lseek_nowait() Hao Xu
2023-07-26 10:26 ` [PATCH 7/7] add lseek for io_uring Hao Xu
2023-07-26 13:22 ` [RFC 0/7] io_uring lseek Christian Brauner
2023-07-27 12:30 ` Hao Xu
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