Date: Thu, 18 Nov 2010 21:09:02 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/vm vm_contig.c vm_object.c vm_pageout.c vm_pageout.h Message-ID: <201011182109.oAIL9Mwn002315@repoman.freebsd.org>
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kib 2010-11-18 21:09:02 UTC
FreeBSD src repository
Modified files:
sys/vm vm_contig.c vm_object.c vm_pageout.c
vm_pageout.h
Log:
SVN rev 215471 on 2010-11-18 21:09:02Z by kib
vm_pageout_flush() might cache the pages that finished write to the
backing storage. Such pages might be then reused, racing with the
assert in vm_object_page_collect_flush() that verified that dirty
pages from the run (most likely, pages with VM_PAGER_AGAIN status) are
write-protected still. In fact, the page indexes for the pages that
were removed from the object page list should be ignored by
vm_object_page_clean().
Return the length of successfully written run from vm_pageout_flush(),
that is, the count of pages between requested page and first page
after requested with status VM_PAGER_AGAIN. Supply the requested page
index in the array to vm_pageout_flush(). Use the returned run length
to forward the index of next page to clean in vm_object_page_clean().
Reported by: avg
Reviewed by: alc
MFC after: 1 week
Revision Changes Path
1.84 +1 -1 src/sys/vm/vm_contig.c
1.428 +2 -23 src/sys/vm/vm_object.c
1.331 +11 -3 src/sys/vm/vm_pageout.c
1.46 +1 -1 src/sys/vm/vm_pageout.h
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