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If the size of the buffer didn't change, don't bother updating the WAPBL

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accounting as it won't change either.
This commit is contained in:
joerg 2008-11-10 21:02:15 +00:00
parent 8800d320f1
commit d1cd6d3433
1 changed files with 3 additions and 4 deletions
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7
sys/kern/vfs_bio.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_bio.c,v 1.211 2008/11/04 16:08:41 reinoud Exp $ */ /* $NetBSD: vfs_bio.c,v 1.212 2008/11/10 21:02:15 joerg Exp $ */
/*- /*-
* Copyright (c) 2007, 2008 The NetBSD Foundation, Inc. * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
@ -109,7 +109,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.211 2008/11/04 16:08:41 reinoud Exp $"); __KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.212 2008/11/10 21:02:15 joerg Exp $");
#include "fs_ffs.h" #include "fs_ffs.h"
#include "opt_bufcache.h" #include "opt_bufcache.h"
@ -1282,7 +1282,7 @@ allocbuf(buf_t *bp, int size, int preserve)
oldsize = bp->b_bufsize; oldsize = bp->b_bufsize;
if (oldsize == desired_size) if (oldsize == desired_size)
goto out; return 0;
/* /*
* If we want a buffer of a different size, re-allocate the * If we want a buffer of a different size, re-allocate the
@ -1321,7 +1321,6 @@ allocbuf(buf_t *bp, int size, int preserve)
} }
mutex_exit(&bufcache_lock); mutex_exit(&bufcache_lock);
out:
if (wapbl_vphaswapbl(bp->b_vp)) if (wapbl_vphaswapbl(bp->b_vp))
WAPBL_RESIZE_BUF(wapbl_vptomp(bp->b_vp), bp, oldsize, oldcount); WAPBL_RESIZE_BUF(wapbl_vptomp(bp->b_vp), bp, oldsize, oldcount);