| commit | 743146ae2a6000d439d5977d490403d7fdf54979 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 24 Jul 2016 07:56:04 +0000 (24 00:56 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 24 Jul 2016 07:56:04 +0000 (24 00:56 -0700) | ||
| tree | ab8f78aa5c04602969ab3759b78f94330dccb800 | treesnapshot (tar.gz zip) |
| parent | 1a5c7e0f9aa6bc9a632a92b6b832cfe676746f7f | commitdiff |
kernel - Fix atomic op comparison
* The sequence was testing a signed integer and then testing the same
variable using atomic_fetchadd_int(&var, 0). Unfortunately, the
atomic-op returns an unsigned value so the result is that when the
buffer count was exhausted, the program would hard-loop without
calling tsleep.
* Fixed by casting the atomic op.
* Should fix the hardlock issue once and for all.
* The sequence was testing a signed integer and then testing the same
variable using atomic_fetchadd_int(&var, 0). Unfortunately, the
atomic-op returns an unsigned value so the result is that when the
buffer count was exhausted, the program would hard-loop without
calling tsleep.
* Fixed by casting the atomic op.
* Should fix the hardlock issue once and for all.
| sys/vm/vm_pager.c | diffblobblamehistory |