From: Christian Brauner <[email protected]>
To: Hao Xu <[email protected]>
Cc: [email protected], Jens Axboe <[email protected]>,
Dominique Martinet <[email protected]>,
Pavel Begunkov <[email protected]>,
Alexander Viro <[email protected]>,
Stefan Roesch <[email protected]>, Clay Harris <[email protected]>,
Dave Chinner <[email protected]>,
"Darrick J . Wong" <[email protected]>,
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
Wanpeng Li <[email protected]>
Subject: Re: [PATCH 07/11] vfs: add nowait parameter for file_accessed()
Date: Mon, 4 Sep 2023 11:51:40 +0200 [thread overview]
Message-ID: <20230904-trennen-gewettert-0b2dc5ba60bc@brauner> (raw)
In-Reply-To: <[email protected]>
On Sun, Aug 27, 2023 at 09:28:31PM +0800, Hao Xu wrote:
> From: Hao Xu <[email protected]>
>
> Add a boolean parameter for file_accessed() to support nowait semantics.
> Currently it is true only with io_uring as its initial caller.
>
> Signed-off-by: Hao Xu <[email protected]>
> ---
> arch/s390/hypfs/inode.c | 2 +-
> block/fops.c | 2 +-
> fs/btrfs/file.c | 2 +-
> fs/btrfs/inode.c | 2 +-
> fs/coda/dir.c | 4 ++--
> fs/ext2/file.c | 4 ++--
> fs/ext4/file.c | 6 +++---
> fs/f2fs/file.c | 4 ++--
> fs/fuse/dax.c | 2 +-
> fs/fuse/file.c | 4 ++--
> fs/gfs2/file.c | 2 +-
> fs/hugetlbfs/inode.c | 2 +-
> fs/nilfs2/file.c | 2 +-
> fs/orangefs/file.c | 2 +-
> fs/orangefs/inode.c | 2 +-
> fs/pipe.c | 2 +-
> fs/ramfs/file-nommu.c | 2 +-
> fs/readdir.c | 2 +-
> fs/smb/client/cifsfs.c | 2 +-
> fs/splice.c | 2 +-
> fs/ubifs/file.c | 2 +-
> fs/udf/file.c | 2 +-
> fs/xfs/xfs_file.c | 6 +++---
> fs/zonefs/file.c | 4 ++--
> include/linux/fs.h | 5 +++--
> mm/filemap.c | 8 ++++----
> mm/shmem.c | 6 +++---
> 27 files changed, 43 insertions(+), 42 deletions(-)
>
> diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
> index ee919bfc8186..55f562027c4f 100644
> --- a/arch/s390/hypfs/inode.c
> +++ b/arch/s390/hypfs/inode.c
> @@ -157,7 +157,7 @@ static ssize_t hypfs_read_iter(struct kiocb *iocb, struct iov_iter *to)
> if (!count)
> return -EFAULT;
> iocb->ki_pos = pos + count;
> - file_accessed(file);
> + file_accessed(file, false);
Why? If all you do is skip atime update anyway then just add something
like:
bool file_needs_atime(struct file *file)
{
return !(file->f_flags & O_NOATIME) &&
atime_needs_update(&file->f_path, d_inode(path->dentry));
}
and then
if (file_needs_atime(file) && IOURING_WANTS_ASYNC)
return -EAGAIN;
instead of touching all this code.
next prev parent reply other threads:[~2023-09-04 9:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-27 13:28 [PATCH v6 00/11] io_uring getdents Hao Xu
2023-08-27 13:28 ` [PATCH 01/11] fs: split off vfs_getdents function of getdents64 syscall Hao Xu
2023-08-27 13:28 ` [PATCH 02/11] xfs: add NOWAIT semantics for readdir Hao Xu
2023-08-27 20:44 ` Matthew Wilcox
2023-08-29 7:41 ` Hao Xu
2023-08-29 13:05 ` Matthew Wilcox
2023-09-04 1:02 ` Dave Chinner
2023-08-27 13:28 ` [PATCH 03/11] vfs: add nowait flag for struct dir_context Hao Xu
2023-08-27 13:28 ` [PATCH 04/11] vfs: add a vfs helper for io_uring file pos lock Hao Xu
2023-08-27 20:47 ` Matthew Wilcox
2023-08-27 13:28 ` [PATCH 05/11] vfs: add file_pos_unlock() for io_uring usage Hao Xu
2023-08-27 13:28 ` [PATCH 06/11] vfs: add a nowait parameter for touch_atime() Hao Xu
2023-08-27 13:28 ` [PATCH 07/11] vfs: add nowait parameter for file_accessed() Hao Xu
2023-08-27 21:32 ` Matthew Wilcox
2023-08-29 7:46 ` Hao Xu
2023-08-29 11:53 ` Matthew Wilcox
2023-08-30 6:11 ` Hao Xu
2023-09-03 22:30 ` Dave Chinner
2023-09-08 0:29 ` Pavel Begunkov
2023-09-10 22:01 ` Dave Chinner
2023-09-04 9:51 ` Christian Brauner [this message]
2023-08-27 13:28 ` [PATCH 08/11] vfs: move file_accessed() to the beginning of iterate_dir() Hao Xu
2023-08-27 13:28 ` [PATCH 09/11] vfs: error out -EAGAIN if atime needs to be updated Hao Xu
2023-08-27 20:51 ` Matthew Wilcox
2023-08-27 13:28 ` [PATCH 10/11] vfs: trylock inode->i_rwsem in iterate_dir() to support nowait Hao Xu
2023-09-04 9:37 ` Christian Brauner
2023-08-27 13:28 ` [PATCH 11/11] io_uring: add support for getdents Hao Xu
2023-09-04 9:57 ` [PATCH v6 00/11] io_uring getdents Christian Brauner
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