linux-kernel - [PATCH 22/27] afs: Don't set PG_error on local EINTR or ENOMEM when filling a page

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Date:   Thu, 09 Mar 2017 18:58:21 +0000
From:   David Howells <dhowells@...hat.com>
To:     viro@...IV.linux.org.uk
Cc:     dhowells@...hat.com, linux-fsdevel@...r.kernel.org,
        linux-afs@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 22/27] afs: Don't set PG_error on local EINTR or ENOMEM when
 filling a page

Don't set PG_error on a page if we get local EINTR or ENOMEM when filling a
page for writing.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 fs/afs/file.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/fs/afs/file.c b/fs/afs/file.c
index b5829443ff69..0d5b8508869b 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -212,7 +212,13 @@ int afs_page_filler(void *data, struct page *page)
 			fscache_uncache_page(vnode->cache, page);
 #endif
 			BUG_ON(PageFsCache(page));
-			goto error;
+
+			if (ret == -EINTR ||
+			    ret == -ENOMEM ||
+			    ret == -ERESTARTSYS ||
+			    ret == -EAGAIN)
+				goto error;
+			goto io_error;
 		}
 
 		SetPageUptodate(page);
@@ -231,10 +237,12 @@ int afs_page_filler(void *data, struct page *page)
 	_leave(" = 0");
 	return 0;
 
+io_error:
+	SetPageError(page);
+	goto error;
 enomem:
 	ret = -ENOMEM;
 error:
-	SetPageError(page);
 	unlock_page(page);
 	_leave(" = %d", ret);
 	return ret;