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authorAndreas Gruenbacher <agruenba@redhat.com>2018-10-09 13:20:05 +0200
committerAndreas Gruenbacher <agruenba@redhat.com>2018-10-09 18:20:13 +0200
commitdc480feb454a975b7ee2c18a2f98fb34e04d3baf (patch)
tree38537f9b8412bfb8cbb96686a8ce014e2679491b /fs/gfs2/bmap.c
parent0854ba5ff5c938307cd783e996b62c83f1ce923b (diff)
gfs2: Fix iomap buffered write support for journaled files
Commit 64bc06bb32ee 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>
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 03128ed1f34e..3c159a7f9a9e 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -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);
}