On Tue, Jun 28, 2011 at 9:39 AM, YAMAMOTO Takashi <y...@mwd.biglobe.ne.jp> wrote: > hi, > >> Module Name: src >> Committed By: hannken >> Date: Mon Jun 27 15:56:37 UTC 2011 >> >> Modified Files: >> src/sys/uvm: uvm_amap.c >> >> Log Message: >> amap_copy(): Keep the source amap locked until its lock has been copied. > > btw, this code seems to assume that uvm_anfree does not release the lock > even temporarily while the comment on uvm_anfree1 says the opposite.
This locking protocol looks odd to me. Mutex obj is alloc'ed in amap, why not free'ed in amap too? uobj is doing so. > > YAMAMOTO Takashi > >> >> Kernel assertion "anon->an_lock == amap->am_lock" no longer fails. >> >> Ok: Mindaugas Rasiukevicius <rm...@netbsd.org> >> >> >> To generate a diff of this commit: >> cvs rdiff -u -r1.99 -r1.100 src/sys/uvm/uvm_amap.c >> >> Please note that diffs are not public domain; they are subject to the >> copyright notices on the relevant files. >
