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* adjust device block number based on if we're putting pages to a 

fs block boudary or not
* round writes to DEV_BSIZE, just to be kosher
This commit is contained in:
pooka 2007-08-07 19:43:56 +00:00
parent 44eee227b6
commit 3c4d6d00f7
1 changed files with 14 additions and 2 deletions
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16
sys/rump/librump/rumpkern/genfs.c
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@ -1,4 +1,4 @@
/* $NetBSD: genfs.c,v 1.5 2007/08/07 19:40:17 pooka Exp $ */
/* $NetBSD: genfs.c,v 1.6 2007/08/07 19:43:56 pooka Exp $ */
/*
* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
@ -180,6 +180,8 @@ genfs_getpages(void *v)
/*
* simplesimplesimple: we put all pages every time.
*
* ayh: I don't even want to think about bsize < PAGE_SIZE
*/
int
genfs_putpages(void *v)
@ -199,6 +201,7 @@ genfs_putpages(void *v)
voff_t curoff, bufoff;
size_t xfersize;
int bshift = vp->v_mount->mnt_fs_bshift;
int bsize = 1 << bshift;
restart:
/* check if all pages are clean */
@ -249,9 +252,18 @@ genfs_putpages(void *v)
if (smallest + bufoff + xfersize > vp->v_writesize)
buf.b_bcount -= (smallest+bufoff+xfersize)
- vp->v_writesize;
buf.b_bcount = (buf.b_bcount + DEV_BSIZE-1) & ~(DEV_BSIZE-1);
KASSERT(buf.b_bcount > 0);
KASSERT(smallest >= 0);
printf("putpages writing from %x to %x (vp size %x)\n",
(int)(smallest + bufoff),
(int)(smallest + bufoff + buf.b_bcount),
(int)vp->v_writesize);
buf.b_lblkno = 0;
buf.b_blkno = bn;
buf.b_blkno = bn + (((smallest+bufoff)&(bsize-1))>>DEV_BSHIFT);
buf.b_data = databuf + bufoff;
buf.b_flags = B_WRITE;