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authorBenjamin Marzinski <bmarzins@redhat.com>2009-10-26 13:29:47 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2009-12-03 11:55:32 +0000
commitc14f5735e724cb5338ca8298d42b1658008a10d7 (patch)
tree74c198fe29824440a8fd52463fe9f326718da7cd /fs
parent3d3c10f2ce80d2a19e5e02023c2b7ab7086c36d5 (diff)
GFS2: remove division from new statfs code
It's not necessary to do any 64bit division for the statfs sync code, so remove it. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/gfs2/super.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 3fee2fd3ae43..b1dcfab36465 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -472,7 +472,8 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
struct buffer_head *l_bh;
- int percent, sync_percent;
+ s64 x, y;
+ int need_sync = 0;
int error;
error = gfs2_meta_inode_buffer(l_ip, &l_bh);
@@ -486,16 +487,16 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
l_sc->sc_free += free;
l_sc->sc_dinodes += dinodes;
gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode));
- if (m_sc->sc_free)
- percent = (100 * l_sc->sc_free) / m_sc->sc_free;
- else
- percent = 100;
+ if (sdp->sd_args.ar_statfs_percent) {
+ x = 100 * l_sc->sc_free;
+ y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent;
+ if (x >= y || x <= -y)
+ need_sync = 1;
+ }
spin_unlock(&sdp->sd_statfs_spin);
brelse(l_bh);
- sync_percent = sdp->sd_args.ar_statfs_percent;
- if (sync_percent && (percent >= sync_percent ||
- percent <= -sync_percent))
+ if (need_sync)
gfs2_wake_up_statfs(sdp);
}