[XFS] stop using file_update_time

xfs_ichtime updates the xfs_inode and Linux inode timestamps just fine, no
need to call file_update_time and then copy the values over to the XFS
inode. The only additional thing in file_update_time are checks not
applicable to the write path.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31829a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>

diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 0e7ca21..91bcd97 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -132,45 +132,6 @@ xfs_ichgtime(
        }
 }
 
-/*
- * Variant on the above which avoids querying the system clock
- * in situations where we know the Linux inode timestamps have
- * just been updated (and so we can update our inode cheaply).
- */
-void
-xfs_ichgtime_fast(
-       xfs_inode_t     *ip,
-       struct inode    *inode,
-       int             flags)
-{
-       timespec_t      *tvp;
-
-       if (flags & XFS_ICHGTIME_MOD) {
-               tvp = &inode->i_mtime;
-               ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec;
-               ip->i_d.di_mtime.t_nsec = (__int32_t)tvp->tv_nsec;
-       }
-       if (flags & XFS_ICHGTIME_CHG) {
-               tvp = &inode->i_ctime;
-               ip->i_d.di_ctime.t_sec = (__int32_t)tvp->tv_sec;
-               ip->i_d.di_ctime.t_nsec = (__int32_t)tvp->tv_nsec;
-       }
-
-       /*
-        * We update the i_update_core field _after_ changing
-        * the timestamps in order to coordinate properly with
-        * xfs_iflush() so that we don't lose timestamp updates.
-        * This keeps us from having to hold the inode lock
-        * while doing this.  We use the SYNCHRONIZE macro to
-        * ensure that the compiler does not reorder the update
-        * of i_update_core above the timestamp updates above.
-        */
-       SYNCHRONIZE();
-       ip->i_update_core = 1;
-       if (!(inode->i_state & I_NEW))
-               mark_inode_dirty_sync(inode);
-}
-
 /*
  * Hook in SELinux.  This is not quite correct yet, what we really need
  * here (as we do for default ACLs) is a mechanism by which creation of

diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/linux-2.6/xfs_iops.h
index 2204f46..8b1a1e3 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_iops.h
+++ b/fs/xfs/linux-2.6/xfs_iops.h
@@ -26,9 +26,6 @@ extern const struct file_operations xfs_invis_file_operations;
 
 extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size);
 
-extern void xfs_ichgtime(struct xfs_inode *, int);
-extern void xfs_ichgtime_fast(struct xfs_inode *, struct inode *, int);
-
 extern void xfs_setup_inode(struct xfs_inode *);
 
 #endif /* __XFS_IOPS_H__ */

diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index e03e2c3..1957e53 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -674,9 +674,7 @@ start:
         */
        if (likely(!(ioflags & IO_INVIS) &&
                   !mnt_want_write(file->f_path.mnt))) {
-               file_update_time(file);
-               xfs_ichgtime_fast(xip, inode,
-                                 XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+               xfs_ichgtime(xip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
                mnt_drop_write(file->f_path.mnt);
        }