mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
zfs: Avoid updating the L2ARC device header unnecessarily
From openzfs-master0ae184a6b
commit message: If we do not write any buffers to the cache device and the evict hand has not advanced do not update the cache device header. Cherry-picked from openzfs0ae184a6ba
Patch Author: George Amanakis <gamanakis@gmail.com> MFC after: 3 days Reviewed by: delphij Differential Revision: https://reviews.freebsd.org/D28682
This commit is contained in:
parent
f15e18a642
commit
5dce03847f
@ -9062,6 +9062,7 @@ l2arc_write_buffers(spa_t *spa, l2arc_dev_t *dev, uint64_t target_sz)
|
||||
l2arc_write_callback_t *cb = NULL;
|
||||
zio_t *pio, *wzio;
|
||||
uint64_t guid = spa_load_guid(spa);
|
||||
l2arc_dev_hdr_phys_t *l2dhdr = dev->l2ad_dev_hdr;
|
||||
|
||||
ASSERT3P(dev->l2ad_vdev, !=, NULL);
|
||||
|
||||
@ -9293,7 +9294,8 @@ l2arc_write_buffers(spa_t *spa, l2arc_dev_t *dev, uint64_t target_sz)
|
||||
* Although we did not write any buffers l2ad_evict may
|
||||
* have advanced.
|
||||
*/
|
||||
l2arc_dev_hdr_update(dev);
|
||||
if (dev->l2ad_evict != l2dhdr->dh_evict)
|
||||
l2arc_dev_hdr_update(dev);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user