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Use write_psize instead of write_asize when doing vdev_space_update.

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Without this change the accounting of L2ARC usage would be wrong and
give 16EB free space because the number became negative and overflows.

Obtained from:	FreeNAS (issue #6239)
MFC after:	2 weeks
This commit is contained in:
Xin LI 2014-10-13 20:39:51 +00:00
parent fc6e35c65c
commit ba6e85e0cf
1 changed files with 1 additions and 1 deletions
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2
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
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@ -5232,7 +5232,7 @@ l2arc_write_buffers(spa_t *spa, l2arc_dev_t *dev, uint64_t target_sz,
ARCSTAT_INCR(arcstat_l2_write_bytes, write_asize);
ARCSTAT_INCR(arcstat_l2_size, write_sz);
ARCSTAT_INCR(arcstat_l2_asize, write_asize);
vdev_space_update(dev->l2ad_vdev, write_asize, 0, 0);
vdev_space_update(dev->l2ad_vdev, write_psize, 0, 0);
/*
* Bump device hand to the device start if it is approaching the end.