From: Andreas Gruenbacher <agruenba@redhat.com>
Date: Wed, 1 Feb 2023 14:08:50 +0000 (+0100)
Subject: gfs2: jdata writepage fix
X-Git-Tag: v6.1.21~1054
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4750fc5f50bb9f0ac0836d415838daf3e3e9f2f5;p=platform%2Fkernel%2Flinux-starfive.git

gfs2: jdata writepage fix

[ Upstream commit cbb60951ce18c9b6e91d2eb97deb41d8ff616622 ]

The ->writepage() and ->writepages() operations are supposed to write
entire pages.  However, on filesystems with a block size smaller than
PAGE_SIZE, __gfs2_jdata_writepage() only adds the first block to the
current transaction instead of adding the entire page.  Fix that.

Fixes: 18ec7d5c3f43 ("[GFS2] Make journaled data files identical to normal files on disk")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index e782b4f..2f04c0f 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -127,7 +127,6 @@ static int __gfs2_jdata_writepage(struct page *page, struct writeback_control *w
 {
 	struct inode *inode = page->mapping->host;
 	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_sbd *sdp = GFS2_SB(inode);
 
 	if (PageChecked(page)) {
 		ClearPageChecked(page);
@@ -135,7 +134,7 @@ static int __gfs2_jdata_writepage(struct page *page, struct writeback_control *w
 			create_empty_buffers(page, inode->i_sb->s_blocksize,
 					     BIT(BH_Dirty)|BIT(BH_Uptodate));
 		}
-		gfs2_page_add_databufs(ip, page, 0, sdp->sd_vfs->s_blocksize);
+		gfs2_page_add_databufs(ip, page, 0, PAGE_SIZE);
 	}
 	return gfs2_write_jdata_page(page, wbc);
 }