From: Wu Bo <wubo40@huawei.com>
Date: Wed, 29 Apr 2020 02:01:55 +0000 (+0800)
Subject: ceph: fix special error code in ceph_try_get_caps()
X-Git-Tag: v5.7-rc5~16^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7d8976afad18d4548ee472e526b126ab74012807;p=thirdparty%2Fkernel%2Flinux.git

ceph: fix special error code in ceph_try_get_caps()

There are 3 speical error codes: -EAGAIN/-EFBIG/-ESTALE.
After calling try_get_cap_refs, ceph_try_get_caps test for the
-EAGAIN twice. Ensure that it tests for -ESTALE instead.

Signed-off-by: Wu Bo <wubo40@huawei.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 185db76300b31..1a8e20ef35bf6 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2749,7 +2749,7 @@ int ceph_try_get_caps(struct inode *inode, int need, int want,
 
 	ret = try_get_cap_refs(inode, need, want, 0, flags, got);
 	/* three special error codes */
-	if (ret == -EAGAIN || ret == -EFBIG || ret == -EAGAIN)
+	if (ret == -EAGAIN || ret == -EFBIG || ret == -ESTALE)
 		ret = 0;
 	return ret;
 }