Date: Mon, 24 Oct 2011 18:37:28 GMT From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 200660 for review Message-ID: <201110241837.p9OIbSTr082621@skunkworks.freebsd.org>
next in thread | raw e-mail | index | archive | help
http://p4web.freebsd.org/@@200660?ac=10 Change 200660 by jhb@jhb_jhbbsd on 2011/10/24 18:36:43 Add a new V_CLEANONLY flag for vinvalbuf() which causes it to only flush clean buffers. Affected files ... .. //depot/projects/fadvise/sys/kern/vfs_subr.c#2 edit .. //depot/projects/fadvise/sys/sys/vnode.h#3 edit Differences ... ==== //depot/projects/fadvise/sys/kern/vfs_subr.c#2 (text+ko) ==== @@ -1191,7 +1191,7 @@ do { error = flushbuflist(&bo->bo_clean, flags, bo, slpflag, slptimeo); - if (error == 0) + if (error == 0 && !(flags & V_CLEANONLY)) error = flushbuflist(&bo->bo_dirty, flags, bo, slpflag, slptimeo); if (error != 0 && error != EAGAIN) { @@ -1220,7 +1220,8 @@ /* * Destroy the copy in the VM cache, too. */ - if (bo->bo_object != NULL && (flags & (V_ALT | V_NORMAL)) == 0) { + if (bo->bo_object != NULL && + (flags & (V_ALT | V_NORMAL | V_CLEANONLY)) == 0) { VM_OBJECT_LOCK(bo->bo_object); vm_object_page_remove(bo->bo_object, 0, 0, (flags & V_SAVE) ? OBJPR_CLEANONLY : 0); @@ -1229,7 +1230,7 @@ #ifdef INVARIANTS BO_LOCK(bo); - if ((flags & (V_ALT | V_NORMAL)) == 0 && + if ((flags & (V_ALT | V_NORMAL | V_CLEANONLY)) == 0 && (bo->bo_dirty.bv_cnt > 0 || bo->bo_clean.bv_cnt > 0)) panic("vinvalbuf: flush failed"); BO_UNLOCK(bo); ==== //depot/projects/fadvise/sys/sys/vnode.h#3 (text+ko) ==== @@ -384,6 +384,7 @@ #define V_SAVE 0x0001 /* vinvalbuf: sync file first */ #define V_ALT 0x0002 /* vinvalbuf: invalidate only alternate bufs */ #define V_NORMAL 0x0004 /* vinvalbuf: invalidate only regular bufs */ +#define V_CLEANONLY 0x0008 /* vinvalbuf: invalidate only clean bufs */ #define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */ #define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */ #define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201110241837.p9OIbSTr082621>