Date: Thu, 7 Nov 2019 18:26:29 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r354461 - head/sys/vm Message-ID: <201911071826.xA7IQTvT076772@repo.freebsd.org>
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Author: markj Date: Thu Nov 7 18:26:29 2019 New Revision: 354461 URL: https://svnweb.freebsd.org/changeset/base/354461 Log: Drop Giant before sleeping on a busy page. Before the page busy code was converted to make direct use of sleepqueues, this was handled by _sleep(). Reported by: glebius Reviewed by: kib Sponsored by: The FreeBSD Foundation Modified: head/sys/vm/vm_page.c Modified: head/sys/vm/vm_page.c ============================================================================== --- head/sys/vm/vm_page.c Thu Nov 7 18:26:01 2019 (r354460) +++ head/sys/vm/vm_page.c Thu Nov 7 18:26:29 2019 (r354461) @@ -1053,8 +1053,10 @@ _vm_page_busy_sleep(vm_object_t obj, vm_page_t m, cons } if (locked) VM_OBJECT_DROP(obj); + DROP_GIANT(); sleepq_add(m, NULL, wmesg, 0, 0); sleepq_wait(m, PVM); + PICKUP_GIANT(); } /*
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