All callers of generic_perform_write need to updated ki_pos, move it into common code.
Signed-off-by: Christoph Hellwig <h...@lst.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 d101b3b0c7dad8..50824831d31def 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 5ac53d2627d20d..9e3855e43a7a63 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -4522,7 +4522,6 @@ 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 f0edf5a36237d1..3cc87ae8473356 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -658,7 +658,6 @@ 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 b4c9bd368b7e58..4d0ec2fa1c7070 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3957,7 +3957,10 @@ 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); @@ -4036,7 +4039,6 @@ 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, @@ -4049,8 +4051,6 @@ 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