Commit dc480feb authored Oct 09, 2018 by Andreas Gruenbacher

gfs2: Fix iomap buffered write support for journaled files



Commit 64bc06bb broke buffered writes to journaled files (chattr
+j): we'll try to journal the buffer heads of the page being written to
in gfs2_iomap_journaled_page_done.  However, the iomap code no longer
creates buffer heads, so we'll BUG() in gfs2_page_add_databufs.  Fix
that by creating buffer heads ourself when needed.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

parent 0854ba5f

fs/gfs2/bmap.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -975,6 +975,10 @@ static void gfs2_iomap_journaled_page_done(struct inode *inode, loff_t pos,
		{
		struct gfs2_inode *ip = GFS2_I(inode);

		if (!page_has_buffers(page)) {
		create_empty_buffers(page, inode->i_sb->s_blocksize,
		(1 << BH_Dirty)\|(1 << BH_Uptodate));
		}
		gfs2_page_add_databufs(ip, page, offset_in_page(pos), copied);
		}