From: Yan, Zheng <zyan@redhat.com>
Date: Tue, 24 Mar 2015 07:49:36 +0000 (+0800)
Subject: ceph: don't zero i_wrbuffer_ref when reconnecting is denied
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a9f6eb61850e1599f9aa5141f25ccc1d8248e174;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ceph: don't zero i_wrbuffer_ref when reconnecting is denied

remove_session_caps_cb() does not truncate dirty data in page
cache, but zeros i_wrbuffer_ref/i_wrbuffer_ref_head. This will
result negtive i_wrbuffer_ref/i_wrbuffer_ref_head

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 0cfc2d163549..c3bac611a097 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1120,13 +1120,6 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
 			mdsc->num_cap_flushing--;
 			drop = 1;
 		}
-		if (drop && ci->i_wrbuffer_ref) {
-			pr_info(" dropping dirty data for %p %lld\n",
-				inode, ceph_ino(inode));
-			ci->i_wrbuffer_ref = 0;
-			ci->i_wrbuffer_ref_head = 0;
-			drop++;
-		}
 		spin_unlock(&mdsc->cap_dirty_lock);
 	}
 	spin_unlock(&ci->i_ceph_lock);