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| author | Benjamin Marzinski <bmarzins@redhat.com> | 2009-10-20 02:39:44 -0500 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2009-12-03 11:55:17 +0000 |
| commit | 3d3c10f2ce80d2a19e5e02023c2b7ab7086c36d5 (patch) | |
| tree | 56b62b064457596caf66700323ff5aac2320ae93 /fs/gfs2/quota.c | |
| parent | 2ec4650526c5a94d96bb760001fe0685b15988de (diff) | |
| download | kernel_samsung_smdk4412-3d3c10f2ce80d2a19e5e02023c2b7ab7086c36d5.zip kernel_samsung_smdk4412-3d3c10f2ce80d2a19e5e02023c2b7ab7086c36d5.tar.gz kernel_samsung_smdk4412-3d3c10f2ce80d2a19e5e02023c2b7ab7086c36d5.tar.bz2 | |
GFS2: Improve statfs and quota usability
GFS2 now has three new mount options, statfs_quantum, quota_quantum and
statfs_percent. statfs_quantum and quota_quantum simply allow you to
set the tunables of the same name. Setting setting statfs_quantum to 0
will also turn on the statfs_slow tunable. statfs_percent accepts an
integer between 0 and 100. Numbers between 1 and 100 will cause GFS2 to
do any early sync when the local number of blocks free changes by at
least statfs_percent from the totoal number of blocks free. Setting
statfs_percent to 0 disables this.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/quota.c')
| -rw-r--r-- | fs/gfs2/quota.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 1d4fc04..e3bf6ea 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -1344,6 +1344,14 @@ static void quotad_check_trunc_list(struct gfs2_sbd *sdp) } } +void gfs2_wake_up_statfs(struct gfs2_sbd *sdp) { + if (!sdp->sd_statfs_force_sync) { + sdp->sd_statfs_force_sync = 1; + wake_up(&sdp->sd_quota_wait); + } +} + + /** * gfs2_quotad - Write cached quota changes into the quota file * @sdp: Pointer to GFS2 superblock @@ -1363,8 +1371,15 @@ int gfs2_quotad(void *data) while (!kthread_should_stop()) { /* Update the master statfs file */ - quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t, - &statfs_timeo, &tune->gt_statfs_quantum); + if (sdp->sd_statfs_force_sync) { + int error = gfs2_statfs_sync(sdp->sd_vfs, 0); + quotad_error(sdp, "statfs", error); + statfs_timeo = gfs2_tune_get(sdp, gt_statfs_quantum) * HZ; + } + else + quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t, + &statfs_timeo, + &tune->gt_statfs_quantum); /* Update quota file */ quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t, @@ -1381,7 +1396,7 @@ int gfs2_quotad(void *data) spin_lock(&sdp->sd_trunc_lock); empty = list_empty(&sdp->sd_trunc_list); spin_unlock(&sdp->sd_trunc_lock); - if (empty) + if (empty && !sdp->sd_statfs_force_sync) t -= schedule_timeout(t); else t = 0; |