[GFS2] Add nanosecond timestamp feature
This adds a nanosecond timestamp feature to the GFS2 filesystem. Due
to the way that the on-disk format works, older filesystems will just
appear to have this field set to zero. When mounted by an older version
of GFS2, the filesystem will simply ignore the extra fields so that
it will again appear to have whole second resolution, so that its
trivially backward compatible.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index b784cf3..d16044cb 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -772,7 +772,7 @@
gfs2_free_data(ip, bstart, blen);
}
- ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+ ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_dinode_out(ip, dibh->b_data);
@@ -847,7 +847,7 @@
}
ip->i_di.di_size = size;
- ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+ ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
error = gfs2_meta_inode_buffer(ip, &dibh);
if (error)
@@ -958,7 +958,7 @@
if (gfs2_is_stuffed(ip)) {
ip->i_di.di_size = size;
- ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+ ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size);
@@ -970,7 +970,7 @@
if (!error) {
ip->i_di.di_size = size;
- ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+ ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
@@ -1043,7 +1043,7 @@
ip->i_no_addr;
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
}
- ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+ ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);