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Message-Id: <20230424054926.26927-6-hch@lst.de>
Date: Mon, 24 Apr 2023 07:49:14 +0200
From: Christoph Hellwig <hch@....de>
To: Jens Axboe <axboe@...nel.dk>
Cc: Miklos Szeredi <miklos@...redi.hu>,
"Darrick J. Wong" <djwong@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
David Howells <dhowells@...hat.com>,
Matthew Wilcox <willy@...radead.org>,
linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
ceph-devel@...r.kernel.org, linux-ext4@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org,
linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 05/17] filemap: update ki_pos in generic_perform_write
All callers of generic_perform_write need to updated ki_pos, move it into
common code.
Signed-off-by: Christoph Hellwig <hch@....de>
---
fs/ceph/file.c | 2 --
fs/ext4/file.c | 9 +++------
fs/f2fs/file.c | 1 -
fs/nfs/file.c | 1 -
mm/filemap.c | 8 ++++----
5 files changed, 7 insertions(+), 14 deletions(-)
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index f4d8bf7dec88a8..feeb9882ef635a 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1894,8 +1894,6 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from)
* can not run at the same time
*/
written = generic_perform_write(iocb, from);
- if (likely(written >= 0))
- iocb->ki_pos = pos + written;
ceph_end_io_write(inode);
}
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 0b8b4499e5ca18..1026acaf1235a0 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -291,12 +291,9 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb,
out:
inode_unlock(inode);
- if (likely(ret > 0)) {
- iocb->ki_pos += ret;
- ret = generic_write_sync(iocb, ret);
- }
-
- return ret;
+ if (unlikely(ret <= 0))
+ return ret;
+ return generic_write_sync(iocb, ret);
}
static ssize_t ext4_handle_inode_extension(struct inode *inode, loff_t offset,
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f4ab23efcf85f8..5a9ae054b6da7d 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4511,7 +4511,6 @@ static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb,
current->backing_dev_info = NULL;
if (ret > 0) {
- iocb->ki_pos += ret;
f2fs_update_iostat(F2FS_I_SB(inode), inode,
APP_BUFFERED_IO, ret);
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 893625eacab9fa..abdae2b29369be 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -666,7 +666,6 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
goto out;
written = result;
- iocb->ki_pos += written;
nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written);
if (mntflags & NFS_MOUNT_WRITE_EAGER) {
diff --git a/mm/filemap.c b/mm/filemap.c
index 2723104cc06a12..0110bde3708b3f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3960,7 +3960,10 @@ ssize_t generic_perform_write(struct kiocb *iocb, struct iov_iter *i)
balance_dirty_pages_ratelimited(mapping);
} while (iov_iter_count(i));
- return written ? written : status;
+ if (!written)
+ return status;
+ iocb->ki_pos += written;
+ return written;
}
EXPORT_SYMBOL(generic_perform_write);
@@ -4039,7 +4042,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
endbyte = pos + status - 1;
err = filemap_write_and_wait_range(mapping, pos, endbyte);
if (err == 0) {
- iocb->ki_pos = endbyte + 1;
written += status;
invalidate_mapping_pages(mapping,
pos >> PAGE_SHIFT,
@@ -4052,8 +4054,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
}
} else {
written = generic_perform_write(iocb, from);
- if (likely(written > 0))
- iocb->ki_pos += written;
}
out:
current->backing_dev_info = NULL;
--
2.39.2
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