[PATCH 4/4] ceph: allocate non-zero page to fscache in readpage()

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From: Li Wang <liwang@xxxxxxxxxxxxxxx>

ceph_osdc_readpages() returns number of bytes read, currently,
the code only allocate full-zero page into fscache, this patch
fixes this.

Signed-off-by: Li Wang <liwang@xxxxxxxxxxxxxxx>
Reviewed-by: Milosz Tanski <milosz@xxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxxx>
(cherry picked from commit ff638b7df5a9264024a6448bdfde2b2bf5d1994a)
---
 fs/ceph/addr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 6df8bd4..1e561c0 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -216,7 +216,7 @@ static int readpage_nounlock(struct file *filp, struct page *page)
 	}
 	SetPageUptodate(page);
 
-	if (err == 0)
+	if (err >= 0)
 		ceph_readpage_to_fscache(inode, page);
 
 out:
-- 
1.8.5.1

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