From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Fri, 27 May 2022 15:20:56 +0000 (-0400)
Subject: hostfs: Handle page write errors correctly
X-Git-Tag: v6.1-rc5~745^2~37
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e775dfb33d81455bb043e447c5bdca76ae60ea15;p=platform%2Fkernel%2Flinux-starfive.git

hostfs: Handle page write errors correctly

If a page can't be written back, we need to call mapping_set_error(),
not clear the page's Uptodate flag.  Also remove the clearing of PageError
on success; that flag is used for read errors, not write errors.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index cc1bc6f..07881b7 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -416,15 +416,15 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc)
 
 	err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count);
 	if (err != count) {
-		ClearPageUptodate(page);
+		if (err >= 0)
+			err = -EIO;
+		mapping_set_error(mapping, err);
 		goto out;
 	}
 
 	if (base > inode->i_size)
 		inode->i_size = base;
 
-	if (PageError(page))
-		ClearPageError(page);
 	err = 0;
 
  out: