Date: Fri, 25 Sep 2009 00:03:13 +0000 (UTC) From: David Xu <davidxu@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern kern_umtx.c Message-ID: <200909250003.n8P03Svq009210@repoman.freebsd.org>
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davidxu 2009-09-25 00:03:13 UTC
FreeBSD src repository
Modified files:
sys/kern kern_umtx.c
Log:
SVN rev 197476 on 2009-09-25 00:03:13Z by davidxu
In function do_rw_wrlock, when a writer got an error and before returning,
check if there are readers blocked by us via URWLOCK_WRITE_WAITERS flag,
and resume the readers. The error must be EAGAIN, otherwise there must
have memory problem, and nobody can rescue the buggy application.
The revision 197445 might be reverted.
Revision Changes Path
1.74 +16 -2 src/sys/kern/kern_umtx.c
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