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| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2010-03-06 02:32:18 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2010-03-06 02:32:18 +0000 |
| commit | fb61264297ca42a2a132f0433f75ccf7fd304ac6 (patch) | |
| tree | e276ffebdb9fa13aa0d4e639c4ff30f9824c5c10 /drivers/md | |
| parent | 2bded7bd7e8b12a913b0b58167a48220560e1514 (diff) | |
| download | kernel_samsung_aries-fb61264297ca42a2a132f0433f75ccf7fd304ac6.zip kernel_samsung_aries-fb61264297ca42a2a132f0433f75ccf7fd304ac6.tar.gz kernel_samsung_aries-fb61264297ca42a2a132f0433f75ccf7fd304ac6.tar.bz2 | |
dm mpath: refactor pg_init
This patch pulls the pg_init path activation code out of
process_queued_ios() into a new function.
No functional change.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 030bc2a..c133548 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -235,6 +235,21 @@ static void free_multipath(struct multipath *m) * Path selection *-----------------------------------------------*/ +static void __pg_init_all_paths(struct multipath *m) +{ + struct pgpath *pgpath; + + m->pg_init_count++; + m->pg_init_required = 0; + list_for_each_entry(pgpath, &m->current_pg->pgpaths, list) { + /* Skip failed paths */ + if (!pgpath->is_active) + continue; + if (queue_work(kmpath_handlerd, &pgpath->activate_path)) + m->pg_init_in_progress++; + } +} + static void __switch_pg(struct multipath *m, struct pgpath *pgpath) { m->current_pg = pgpath->pg; @@ -439,7 +454,7 @@ static void process_queued_ios(struct work_struct *work) { struct multipath *m = container_of(work, struct multipath, process_queued_ios); - struct pgpath *pgpath = NULL, *tmp; + struct pgpath *pgpath = NULL; unsigned must_queue = 1; unsigned long flags; @@ -457,17 +472,9 @@ static void process_queued_ios(struct work_struct *work) (!pgpath && !m->queue_if_no_path)) must_queue = 0; - if (m->pg_init_required && !m->pg_init_in_progress && pgpath) { - m->pg_init_count++; - m->pg_init_required = 0; - list_for_each_entry(tmp, &pgpath->pg->pgpaths, list) { - /* Skip failed paths */ - if (!tmp->is_active) - continue; - if (queue_work(kmpath_handlerd, &tmp->activate_path)) - m->pg_init_in_progress++; - } - } + if (m->pg_init_required && !m->pg_init_in_progress && pgpath) + __pg_init_all_paths(m); + out: spin_unlock_irqrestore(&m->lock, flags); if (!must_queue) |