The patch titled
Subject: iomap: update ki_pos in iomap_file_buffered_write
has been added to the -mm mm-unstable branch. Its filename is
iomap-update-ki_pos-in-iomap_file_buffered_write.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/iomap-update-ki_pos-in-iomap_file_buffered_write.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: iomap: update ki_pos in iomap_file_buffered_write
Date: Fri, 19 May 2023 11:35:15 +0200
All callers of iomap_file_buffered_write need to updated ki_pos, move it
into common code.
Link: https://lkml.kernel.org/r/20230519093521.133226-8-hch@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Cc: Anna Schumaker <anna@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Damien Le Moal <dlemoal@xxxxxxxxxx>
Cc: Darrick J. Wong <djwong@xxxxxxxxxx>
Cc: Ilya Dryomov <idryomov@xxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Xiubo Li <xiubli@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/gfs2/file.c | 4 +---
fs/iomap/buffered-io.c | 9 ++++++---
fs/xfs/xfs_file.c | 2 --
fs/zonefs/file.c | 4 +---
4 files changed, 8 insertions(+), 11 deletions(-)
--- a/fs/gfs2/file.c~iomap-update-ki_pos-in-iomap_file_buffered_write
+++ a/fs/gfs2/file.c
@@ -1046,10 +1046,8 @@ retry:
ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
pagefault_enable();
current->backing_dev_info = NULL;
- if (ret > 0) {
- iocb->ki_pos += ret;
+ if (ret > 0)
written += ret;
- }
if (inode == sdp->sd_rindex)
gfs2_glock_dq_uninit(statfs_gh);
--- a/fs/iomap/buffered-io.c~iomap-update-ki_pos-in-iomap_file_buffered_write
+++ a/fs/iomap/buffered-io.c
@@ -864,16 +864,19 @@ iomap_file_buffered_write(struct kiocb *
.len = iov_iter_count(i),
.flags = IOMAP_WRITE,
};
- int ret;
+ ssize_t ret;
if (iocb->ki_flags & IOCB_NOWAIT)
iter.flags |= IOMAP_NOWAIT;
while ((ret = iomap_iter(&iter, ops)) > 0)
iter.processed = iomap_write_iter(&iter, i);
- if (iter.pos == iocb->ki_pos)
+
+ if (unlikely(ret < 0))
return ret;
- return iter.pos - iocb->ki_pos;
+ ret = iter.pos - iocb->ki_pos;
+ iocb->ki_pos += ret;
+ return ret;
}
EXPORT_SYMBOL_GPL(iomap_file_buffered_write);
--- a/fs/xfs/xfs_file.c~iomap-update-ki_pos-in-iomap_file_buffered_write
+++ a/fs/xfs/xfs_file.c
@@ -723,8 +723,6 @@ write_retry:
trace_xfs_file_buffered_write(iocb, from);
ret = iomap_file_buffered_write(iocb, from,
&xfs_buffered_write_iomap_ops);
- if (likely(ret >= 0))
- iocb->ki_pos += ret;
/*
* If we hit a space limit, try to free up some lingering preallocated
--- a/fs/zonefs/file.c~iomap-update-ki_pos-in-iomap_file_buffered_write
+++ a/fs/zonefs/file.c
@@ -643,9 +643,7 @@ static ssize_t zonefs_file_buffered_writ
goto inode_unlock;
ret = iomap_file_buffered_write(iocb, from, &zonefs_write_iomap_ops);
- if (ret > 0)
- iocb->ki_pos += ret;
- else if (ret == -EIO)
+ if (ret == -EIO)
zonefs_io_error(inode, true);
inode_unlock:
_
Patches currently in -mm which might be from hch@xxxxxx are
iomap-update-ki_pos-a-little-later-in-iomap_dio_complete.patch
filemap-update-ki_pos-in-generic_perform_write.patch
filemap-assign-current-backing_dev_info-in-generic_perform_write.patch
filemap-add-a-kiocb_write_and_wait-helper.patch
filemap-add-a-kiocb_invalidate_pages-helper.patch
filemap-add-a-kiocb_invalidate_post_write-helper.patch
iomap-update-ki_pos-in-iomap_file_buffered_write.patch
iomap-assign-current-backing_dev_info-in-iomap_file_buffered_write.patch
iomap-use-kiocb_write_and_wait-and-kiocb_invalidate_pages.patch
fs-factor-out-a-direct_write_fallback-helper.patch
fuse-update-ki_pos-in-fuse_perform_write.patch
fuse-drop-redundant-arguments-to-fuse_perform_write.patch
fuse-use-direct_write_fallback.patch
squashfs-dont-include-buffer_headh.patch
