diff options
author | tegge <tegge@FreeBSD.org> | 2006-05-29 21:28:56 +0000 |
---|---|---|
committer | tegge <tegge@FreeBSD.org> | 2006-05-29 21:28:56 +0000 |
commit | 0d5f19116220da1e7a0df73c804bebeb5efdf862 (patch) | |
tree | 2227714d6a33f215f9677debe94c947b9e3fc437 /usr.bin/calendar/day.c | |
parent | ff05f5f32b9783ffa4f05a2b79b7e54056d2f947 (diff) | |
download | FreeBSD-src-0d5f19116220da1e7a0df73c804bebeb5efdf862.zip FreeBSD-src-0d5f19116220da1e7a0df73c804bebeb5efdf862.tar.gz |
Close race between vmspace_exitfree() and exit1() and races between
vmspace_exitfree() and vmspace_free() which could result in the same
vmspace being freed twice.
Factor out part of exit1() into new function vmspace_exit(). Attach
to vmspace0 to allow old vmspace to be freed earlier.
Add new function, vmspace_acquire_ref(), for obtaining a vmspace
reference for a vmspace belonging to another process. Avoid changing
vmspace refcount from 0 to 1 since that could also lead to the same
vmspace being freed twice.
Change vmtotal() and swapout_procs() to use vmspace_acquire_ref().
Reviewed by: alc
Diffstat (limited to 'usr.bin/calendar/day.c')
0 files changed, 0 insertions, 0 deletions