diff options
| author |   Hannes Reinecke <hare@suse.de> | 2020-06-02 13:09:53 +0200 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@redhat.com> | 2020-06-05 14:59:52 -0400 |
| commit | 22c1ef66c4cbb82baf81a28abedfe8ad20ad9126 (patch) | |
| tree | f27512085be637385073999cb414b2dea9d5459e /drivers/md/dm-zoned-metadata.c | |
| parent | dm zoned: support arbitrary number of devices (diff) | |
| download | linux-dev-22c1ef66c4cbb82baf81a28abedfe8ad20ad9126.tar.xz linux-dev-22c1ef66c4cbb82baf81a28abedfe8ad20ad9126.zip | |
dm zoned: allocate zone by device index
When allocating a zone, pass in an indicator on which device the zone
should be allocated; this increases performance for a multi-device
setup because reclaim will now allocate zones on the device for which
reclaim is running.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-zoned-metadata.c')
| -rw-r--r-- | drivers/md/dm-zoned-metadata.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c index 49bafc86aa9a..1a6cdab3e4ef 100644 --- a/drivers/md/dm-zoned-metadata.c +++ b/drivers/md/dm-zoned-metadata.c @@ -2050,7 +2050,7 @@ again: goto out; /* Allocate a random zone */ - dzone = dmz_alloc_zone(zmd, alloc_flags); + dzone = dmz_alloc_zone(zmd, 0, alloc_flags); if (!dzone) { if (dmz_dev_is_dying(zmd)) { dzone = ERR_PTR(-EIO); @@ -2156,7 +2156,7 @@ again: goto out; /* Allocate a random zone */ - bzone = dmz_alloc_zone(zmd, alloc_flags); + bzone = dmz_alloc_zone(zmd, 0, alloc_flags); if (!bzone) { if (dmz_dev_is_dying(zmd)) { bzone = ERR_PTR(-EIO); @@ -2187,11 +2187,12 @@ out: * Get an unmapped (free) zone. * This must be called with the mapping lock held. */ -struct dm_zone *dmz_alloc_zone(struct dmz_metadata *zmd, unsigned long flags) +struct dm_zone *dmz_alloc_zone(struct dmz_metadata *zmd, unsigned int dev_idx, + unsigned long flags) { struct list_head *list; struct dm_zone *zone; - unsigned int dev_idx = 0; + int i = 0; again: if (flags & DMZ_ALLOC_CACHE) @@ -2207,8 +2208,12 @@ again: */ if (!(flags & DMZ_ALLOC_RECLAIM)) return NULL; - if (dev_idx < zmd->nr_devs) { - dev_idx++; + /* + * Try to allocate from other devices + */ + if (i < zmd->nr_devs) { + dev_idx = (dev_idx + 1) % zmd->nr_devs; + i++; goto again; } |