linux-kernel - [RFC v2a 07/12] fs: btrfs: Use vfs_time data type for btrfs_update

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Date:	Fri, 12 Feb 2016 01:36:01 -0800
From:	Deepa Dinamani <deepa.kernel@...il.com>
To:	linux-fsdevel@...r.kernel.org, y2038@...ts.linaro.org
Cc:	Arnd Bergmann <arnd@...db.de>, Dave Chinner <david@...morbit.com>,
	"Theodore Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org
Subject: [RFC v2a 07/12] fs: btrfs: Use vfs_time data type for btrfs_update_time()

The VFS inode timestamps are not y2038 safe as they use
struct timespec. These will be changed to use struct timespec64
instead and that is y2038 safe.
But, since the above data type conversion will break the end
file systems, use vfs_time aliases here to access inode times.

This is set as a vfs callback function for inode operations.
This accepts inode timestamp as an argument.
And, needs to switch to 64 bit time representation along with vfs.

Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
---
 fs/btrfs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 59c0e22..6f0417b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5942,7 +5942,7 @@ static int btrfs_dirty_inode(struct inode *inode)
  * This is a copy of file_update_time.  We need this so we can return error on
  * ENOSPC for updating the inode in the case of file write and mmap writes.
  */
-static int btrfs_update_time(struct inode *inode, struct timespec *now,
+static int btrfs_update_time(struct inode *inode, struct vfs_time *now,
 			     int flags)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
-- 
1.9.1