Commit 8c56e03d authored by Miklos Szeredi's avatar Miklos Szeredi
Browse files

fuse: don't bump attr_version in cached write 



The attribute version in fuse_inode should be updated whenever the
attributes might have changed on the server.  In case of cached writes this
is not the case, so updating the attr_version is unnecessary and could
possibly affect performance.

Open code the remaining part of fuse_write_update_size().

Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent fa5eee57

fs/fuse/file.c

+5 −2
Original line number Diff line number Diff line
@@ -2309,15 +2309,18 @@ static int fuse_write_end(struct file *file, struct address_space *mapping, 
	if (!copied)

		goto unlock;



	pos += copied;

	if (!PageUptodate(page)) {

		/* Zero any unwritten bytes at the end of the page */

		size_t endoff = (pos + copied) & ~PAGE_MASK;

		size_t endoff = pos & ~PAGE_MASK;

		if (endoff)

			zero_user_segment(page, endoff, PAGE_SIZE);

		SetPageUptodate(page);

	}



	fuse_write_update_size(inode, pos + copied);

	if (pos > inode->i_size)

		i_size_write(inode, pos);



	set_page_dirty(page);



unlock: