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pNFS/flexfiles: track when layout is first used

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So that we can report cumulative time since the beginning
of statistics collection of the layout.

Reviewed-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Peng Tao 2015-06-23 19:52:00 +08:00 committed by Trond Myklebust
parent abcb7bfc9f
commit d983803d38
2 changed files with 8 additions and 3 deletions
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10
fs/nfs/flexfilelayout/flexfilelayout.c
View File

@ -451,9 +451,13 @@ nfs4_ff_layout_calc_completion_time(struct rpc_task *task)
}
static void
nfs4_ff_layoutstat_start_io(struct nfs4_ff_layoutstat *layoutstat)
nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror,
struct nfs4_ff_layoutstat *layoutstat)
{
static const ktime_t notime = {0};
nfs4_ff_start_busy_timer(&layoutstat->busy_timer);
cmpxchg(&mirror->start_time, notime, ktime_get());
}
static void
@ -491,7 +495,7 @@ nfs4_ff_layout_stat_io_start_read(struct nfs4_ff_layout_mirror *mirror,
__u64 requested)
{
spin_lock(&mirror->lock);
nfs4_ff_layoutstat_start_io(&mirror->read_stat);
nfs4_ff_layoutstat_start_io(mirror, &mirror->read_stat);
nfs4_ff_layout_stat_io_update_requested(&mirror->read_stat, requested);
spin_unlock(&mirror->lock);
}
@ -514,7 +518,7 @@ nfs4_ff_layout_stat_io_start_write(struct nfs4_ff_layout_mirror *mirror,
__u64 requested)
{
spin_lock(&mirror->lock);
nfs4_ff_layoutstat_start_io(&mirror->write_stat);
nfs4_ff_layoutstat_start_io(mirror, &mirror->write_stat);
nfs4_ff_layout_stat_io_update_requested(&mirror->write_stat, requested);
spin_unlock(&mirror->lock);
}

1
fs/nfs/flexfilelayout/flexfilelayout.h
View File

@ -74,6 +74,7 @@ struct nfs4_ff_layout_mirror {
spinlock_t lock;
struct nfs4_ff_layoutstat read_stat;
struct nfs4_ff_layoutstat write_stat;
ktime_t start_time;
};
struct nfs4_ff_layout_segment {