| commit | e16c650d787872d60f6ca3d20a7f1bc1e0c19261 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 23 Mar 2017 01:43:08 +0000 (22 18:43 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 23 Mar 2017 01:43:08 +0000 (22 18:43 -0700) | ||
| tree | fb9c83366409cf1b14bc4161ad508b06504237e0 | treesnapshot (tar.gz zip) |
| parent | dd8f8e174ebecf179f46197925501a4b690f6282 | commitdiff |
kernel - Fix panic in zget() during heavy paging
* Fix a panic that can occur in zget() when a large number of swap info
blocks are needed from the swap_zone.
Fix by reformulation how new items are added to the zone. This is a
non-critical code path, but we make it a bit more SMP friendly anyway.
* Use the opportunity to get rid of the VM object ZONE_INTERRUPT uses.
The two that are left are never destroyed, so there's no need to track
the pages in an object.
Reported-by: tkusumi
* Fix a panic that can occur in zget() when a large number of swap info
blocks are needed from the swap_zone.
Fix by reformulation how new items are added to the zone. This is a
non-critical code path, but we make it a bit more SMP friendly anyway.
* Use the opportunity to get rid of the VM object ZONE_INTERRUPT uses.
The two that are left are never destroyed, so there's no need to track
the pages in an object.
Reported-by: tkusumi