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filemap: update ki_pos in generic_perform_write 

All callers of generic_perform_write need to updated ki_pos, move it into
common code.

Link: https://lkml.kernel.org/r/20230601145904.1385409-4-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Anna Schumaker <anna@kernel.org>
Cc: Chao Yu <chao@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2023-06-01 16:58:55 +02:00 committed by Andrew Morton
parent 936e114a24
commit 182c25e9c1
5 changed files with 7 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ceph/file.c
View File

@ -1891,8 +1891,6 @@ retry_snap:
* 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);
}

9
fs/ext4/file.c
View File

@ -289,12 +289,9 @@ 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,

1
fs/f2fs/file.c
View File

@ -4520,7 +4520,6 @@ static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb,
ret = generic_perform_write(iocb, from);
if (ret > 0) {
iocb->ki_pos += ret;
f2fs_update_iostat(F2FS_I_SB(inode), inode,
APP_BUFFERED_IO, ret);
}

1
fs/nfs/file.c
View File

@ -655,7 +655,6 @@ 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) {

8
mm/filemap.c
View File

@ -3930,7 +3930,10 @@ again:
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);
@ -4007,7 +4010,6 @@ 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,
@ -4020,8 +4022,6 @@ 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:
return written ? written : err;