linux-kernel - [PATCH v4 23/26] fs: ceph: Replace current_fs

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Message-Id: <1471128518-24075-24-git-send-email-deepa.kernel@gmail.com>
Date:	Sat, 13 Aug 2016 15:48:35 -0700
From:	Deepa Dinamani <deepa.kernel@...il.com>
To:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	arnd@...db.de, tglx@...utronix.de, torvalds@...ux-foundation.org,
	tytso@....edu, viro@...iv.linux.org.uk, y2038@...ts.linaro.org,
	"Yan, Zheng" <zyan@...hat.com>, Sage Weil <sage@...hat.com>,
	Ilya Dryomov <idryomov@...il.com>, ceph-devel@...r.kernel.org
Subject: [PATCH v4 23/26] fs: ceph: Replace current_fs_time for request stamp

The current_fs_time() api is being changed to use vfs
struct inode* as an argument instead of struct super_block*.

Set the new mds client request r_stamp field using
ktime_get_real_ts() instead of using current_fs_time().

Also, since r_stamp is used as mtime on the server, use
timespec_trunc() to truncate the timestamp, using the right
granularity from the superblock.

This api will be transitioned to be y2038 safe along
with vfs.

Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Reviewed-by: Arnd Bergmann <arnd@...db.de>
Cc: "Yan, Zheng" <zyan@...hat.com>
Cc: Sage Weil <sage@...hat.com>
Cc: Ilya Dryomov <idryomov@...il.com>
Cc: ceph-devel@...r.kernel.org
---
 fs/ceph/mds_client.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index fa59a85..015db39 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1640,6 +1640,7 @@ struct ceph_mds_request *
 ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode)
 {
 	struct ceph_mds_request *req = kzalloc(sizeof(*req), GFP_NOFS);
+	struct timespec ts;
 
 	if (!req)
 		return ERR_PTR(-ENOMEM);
@@ -1658,7 +1659,8 @@ ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode)
 	init_completion(&req->r_safe_completion);
 	INIT_LIST_HEAD(&req->r_unsafe_item);
 
-	req->r_stamp = current_fs_time(mdsc->fsc->sb);
+	ktime_get_real_ts(&ts);
+	req->r_stamp = timespec_trunc(ts, mdsc->fsc->sb->s_time_gran);
 
 	req->r_op = op;
 	req->r_direct_mode = mode;
-- 
1.9.1