diff options
| author | Matthew Ahrens <[email protected]> | 2013-11-22 15:13:18 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-12-06 09:30:51 -0800 |
| commit | 384f8a09f8423d951bb81d9ca945e588de14f95f (patch) | |
| tree | ecc453b3d1561ac9952a418e5d4fc8db9002568f /module/zfs/arc.c | |
| parent | 729210564a5325e190fc4fba22bf17bacf957ace (diff) | |
Illumos #4347 ZPL can use dmu_tx_assign(TXG_WAIT)
Fix a lock contention issue by allowing threads not holding
ZPL locks to block when waiting to assign a transaction.
Porting Notes:
zfs_putpage() still uses TXG_NOWAIT, unlike the upstream version. This
case may be a contention point just like zfs_write(), however it is not
safe to block here since it may be called during memory reclaim.
Reviewed by: George Wilson <[email protected]>
Reviewed by: Adam Leventhal <[email protected]>
Reviewed by: Dan McDonald <[email protected]>
Reviewed by: Boris Protopopov <[email protected]>
Approved by: Dan McDonald <[email protected]>
References:
https://www.illumos.org/issues/4347
illumos/illumos-gate@e722410c49fe67cbf0f639cbcc288bd6cbcf7dd1
Ported-by: Ned Bass <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'module/zfs/arc.c')
0 files changed, 0 insertions, 0 deletions