Date: Wed, 29 Dec 2010 12:53:53 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/vm vm_object.c vm_page.c Message-ID: <201012291254.oBTCsHUW004235@repoman.freebsd.org>
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kib 2010-12-29 12:53:53 UTC
FreeBSD src repository
Modified files:
sys/vm vm_object.c vm_page.c
Log:
SVN rev 216799 on 2010-12-29 12:53:53Z by kib
Move the increment of vm object generation count into
vm_object_set_writeable_dirty().
Fix an issue where restart of the scan in vm_object_page_clean() did
not removed write permissions for newly added pages or, if the mapping
for some already scanned page changed to writeable due to fault.
Merge the two loops in vm_object_page_clean(), doing the remove of
write permission and cleaning in the same loop. The restart of the
loop then correctly downgrade writeable mappings.
Fix an issue where a second caller to msync() might actually return
before the first caller had actually completed flushing the
pages. Clear the OBJ_MIGHTBEDIRTY flag after the cleaning loop, not
before.
Calls to pmap_is_modified() are not needed after pmap_remove_write()
there.
Proposed, reviewed and tested by: alc
MFC after: 1 week
Revision Changes Path
1.434 +34 -31 src/sys/vm/vm_object.c
1.430 +0 -1 src/sys/vm/vm_page.c
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