[v2,12/17] mm: ensure that we set mapping error if writeout() fails
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Message ID 20170412120614.6111-13-jlayton@redhat.com
State New
Headers show

Commit Message

Jeff Layton April 12, 2017, 12:06 p.m. UTC
If writepage fails during a page migration, then we need to ensure that
fsync will see it by flagging the mapping.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 mm/migrate.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Patch
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diff --git a/mm/migrate.c b/mm/migrate.c
index ed97c2c14fa8..a77b9e769d0b 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -792,7 +792,11 @@  static int writeout(struct address_space *mapping, struct page *page)
 		/* unlocked. Relock */
 		lock_page(page);
 
-	return (rc < 0) ? -EIO : -EAGAIN;
+	if (rc < 0) {
+		mapping_set_error(mapping, rc);
+		return -EIO;
+	}
+	return -EAGAIN;
 }
 
 /*