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Groups > linux.kernel > #1332617

[RFC v2a 06/12] fs: btrfs: Change btrfs_inode.i_otime to use vfs_time data type

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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.
struct btrfs_inode is the in memory inode structure for btrfs.
i_otime is a member of the btrfs_inode that represents file
creation times.

Like all the other inode timestamps in struct inode, i_otime is
assigned to/ from disk or struct inode times or 0.

Hence, i_otime needs to change along with other inode
timestamps. Use vfs_time data type to make the transition to
64 bit time along with the other inode timestamps.

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

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 61205e3..e45b7af 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -190,7 +190,7 @@ struct btrfs_inode {
 	struct btrfs_delayed_node *delayed_node;
 
 	/* File creation time. */
-	struct timespec i_otime;
+	struct vfs_time i_otime;
 
 	/* Hook into fs_info->delayed_iputs */
 	struct list_head delayed_iput;
-- 
1.9.1

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[RFC v2] vfs 64 bit time transition proposals Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:30 +0100
  [RFC v2a 12/12] fs: xfs: change inode times to use vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 10/12] fs: ceph: Replace timespec data type with vfs_time Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 06/12] fs: btrfs: Change btrfs_inode.i_otime to use vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 02/12] fs: cifs: Change cifs_fscache_inode_auxdata to use vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 09/12] fs: ceph: Change encode and decode functions to use vfs_time Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 04/12] fs: cifs: Make cnvrtDosUnixTm() y2038 safe Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 05/12] fs: cifs: Use vfs_time_get_real_* time functions Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
  [RFC v2a 00/12] vfs 64 bit time transition proposal Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
    [RFC v2a 11/12] net: ceph: use vfs_time data type instead of timespec Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
      Re: [RFC v2a 11/12] net: ceph: use vfs_time data type instead of  timespec Dave Chinner <david@fromorbit.com> - 2016-02-13 23:10 +0100
        Re: [RFC v2a 11/12] net: ceph: use vfs_time data type instead of timespec Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-14 02:50 +0100
          Re: [RFC v2a 11/12] net: ceph: use vfs_time data type instead of timespec Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-14 03:10 +0100
          Re: [RFC v2a 11/12] net: ceph: use vfs_time data type instead of  timespec Dave Chinner <david@fromorbit.com> - 2016-02-14 22:10 +0100
            Re: [RFC v2a 11/12] net: ceph: use vfs_time data type instead of timespec Arnd Bergmann <arnd@arndb.de> - 2016-02-17 10:40 +0100
    [RFC v2a 07/12] fs: btrfs: Use vfs_time data type for btrfs_update_time() Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
    [RFC v2a 08/12] fs: btrfs: Change timespec data types to use vfs_time Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:40 +0100
    [RFC v2a 03/12] fs: cifs: Change cifs_fattr timestamps data type to vfs_time Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
    [RFC v2a 01/12] vfs: Add vfs_time abstractions Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
  [RFC v2b 4/5] fs: ceph: Use vfs timestamp accessors Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
  [RFC v2b 2/5] fs: cifs: Use vfs_time accessors Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
  [RFC v2b 3/5] fs: btrfs: Use vfs_time accessors Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
    Re: [RFC v2b 3/5] fs: btrfs: Use vfs_time accessors Arnd Bergmann <arnd@arndb.de> - 2016-02-12 15:00 +0100
      Re: [RFC v2b 3/5] fs: btrfs: Use vfs_time accessors Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-13 08:10 +0100
  [RFC v2b 0/5] vfs 64 bit time transition proposal Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
    [RFC v2b 1/5] vfs: Add vfs_time accessors Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 10:50 +0100
    [RFC v2b 5/5] fs: xfs: change inode times to use vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
      Re: [RFC v2b 5/5] fs: xfs: change inode times to use vfs_time data  type Dave Chinner <david@fromorbit.com> - 2016-02-13 03:20 +0100
        Re: [Y2038] [RFC v2b 5/5] fs: xfs: change inode times to use vfs_time data type Arnd Bergmann <arnd@arndb.de> - 2016-02-13 16:00 +0100
          Re: [Y2038] [RFC v2b 5/5] fs: xfs: change inode times to use vfs_time  data type "David F." <df7729@gmail.com> - 2016-02-13 17:00 +0100
  [RFC v2c 8/8] fs: xfs: change inode times to use vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 2/8] fs: cifs: Change auxdata to struct timespec64 data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 1/8] vfs: Add vfs_time abstractions Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 4/8] fs: cifs: Make cnvrtDosUnixTm() y2038 safe Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 6/8] fs: btrfs: Use vfs timestamp abstraction helper Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 5/8] fs: btrfs: Change btrfs_inode.i_otime to vfs_time data type Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 3/8] fs: cifs: Change cifs_fattr timestamps data type to timespec64 Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  [RFC v2c 0/8] vfs 64 bit time transition proposal Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
    [RFC v2c 7/8] fs: ceph: Use vfs timestamp abstraction helpers Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-12 11:00 +0100
  Re: [Y2038] [RFC v2] vfs 64 bit time transition proposals Arnd Bergmann <arnd@arndb.de> - 2016-02-12 15:10 +0100
    Re: [Y2038] [RFC v2] vfs 64 bit time transition proposals Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-13 08:00 +0100
      [RFC v2] vfs 64 bit time transition proposals Deepa Dinamani <deepa.kernel@gmail.com> - 2016-02-13 13:00 +0100

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