diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-08-24 20:39:18 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-08-25 14:40:08 -0400 |
| commit | bbf58bf3488e41f346536aa89d62bdf2fe771128 (patch) | |
| tree | c15f4869e0a3c5b4e1547260b555d863da12c0aa /fs/nfs | |
| parent | 266d12d42ebd2587d3d0e8c4a4e54bfb5ed29543 (diff) | |
NFSv4.2/pnfs: Make the layoutstats timer configurable
Allow advanced users to set the layoutstats timer in order to lengthen
or shorten the period between layoutstat transmissions to the server.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.c | 5 | ||||
| -rw-r--r-- | fs/nfs/pnfs.c | 4 | ||||
| -rw-r--r-- | fs/nfs/pnfs.h | 3 |
3 files changed, 11 insertions, 1 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 0fbf37de2a41..9f6fb8876b3f 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -533,14 +533,17 @@ nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror, ktime_t now) { static const ktime_t notime = {0}; + s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL; nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now); if (ktime_equal(mirror->start_time, notime)) mirror->start_time = now; if (ktime_equal(mirror->last_report_time, notime)) mirror->last_report_time = now; + if (layoutstats_timer != 0) + report_interval = (s64)layoutstats_timer * 1000LL; if (ktime_to_ms(ktime_sub(now, mirror->last_report_time)) >= - FF_LAYOUTSTATS_REPORT_INTERVAL) { + report_interval) { mirror->last_report_time = now; return true; } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 247c5a5d2d6b..3530bb703214 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -2285,3 +2285,7 @@ out_put: } EXPORT_SYMBOL_GPL(pnfs_report_layoutstat); #endif + +unsigned int layoutstats_timer; +module_param(layoutstats_timer, uint, 0644); +EXPORT_SYMBOL_GPL(layoutstats_timer); diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 02c27f93caf1..d3979dd1037a 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -528,12 +528,15 @@ pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, nfss->pnfs_curr_ld->id == src->l_type); } +extern unsigned int layoutstats_timer; + #ifdef NFS_DEBUG void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); #else static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) { } + #endif /* NFS_DEBUG */ #else /* CONFIG_NFS_V4_1 */ |