Date: Fri, 2 Feb 2018 11:56:30 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328773 - head/sys/vm Message-ID: <201802021156.w12BuUbj024203@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: kib Date: Fri Feb 2 11:56:30 2018 New Revision: 328773 URL: https://svnweb.freebsd.org/changeset/base/328773 Log: On pageout, in vnode generic pager, for partially dirty page, only clear dirty bits for completely invalid blocks. Otherwise we might not write out the last chunk that is shorter than 512 bytes, if the file end is not aligned on disk block boundary. This become important after the r324794. PR: 225586 Reported by: tris_vern@hotmail.com Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 3 days Modified: head/sys/vm/vnode_pager.c Modified: head/sys/vm/vnode_pager.c ============================================================================== --- head/sys/vm/vnode_pager.c Fri Feb 2 07:55:31 2018 (r328772) +++ head/sys/vm/vnode_pager.c Fri Feb 2 11:56:30 2018 (r328773) @@ -1266,6 +1266,8 @@ vnode_pager_generic_putpages(struct vnode *vp, vm_page maxsize = object->un_pager.vnp.vnp_size - poffset; ncount = btoc(maxsize); if ((pgoff = (int)maxsize & PAGE_MASK) != 0) { + pgoff = roundup2(pgoff, DEV_BSIZE); + /* * If the object is locked and the following * conditions hold, then the page's dirty
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201802021156.w12BuUbj024203>