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Correct a problem where data OR metadata could be thrown away if a

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buffer is grown.
This commit is contained in:
dyson 1998-03-17 17:36:05 +00:00
parent 89d080d781
commit 9470d0a235
1 changed files with 9 additions and 3 deletions
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12
sys/kern/vfs_bio.c
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@ -11,7 +11,7 @@
* 2. Absolutely no warranty of function or purpose is made by the author
* John S. Dyson.
*
* $Id: vfs_bio.c,v 1.156 1998/03/16 01:55:22 dyson Exp $
* $Id: vfs_bio.c,v 1.157 1998/03/17 08:41:28 kato Exp $
*/
/*
@ -1461,11 +1461,17 @@ getblk(struct vnode * vp, daddr_t blkno, int size, int slpflag, int slptimeo)
if ((bp->b_flags & B_VMIO) && (size <= bp->b_kvasize)) {
allocbuf(bp, size);
} else {
bp->b_flags |= B_NOCACHE;
if (bp->b_flags & B_DELWRI) {
bp->b_flags |= B_NOCACHE;
VOP_BWRITE(bp);
} else {
brelse(bp);
if (bp->b_flags & B_VMIO) {
bp->b_flags |= B_RELBUF;
brelse(bp);
} else {
bp->b_flags |= B_NOCACHE;
VOP_BWRITE(bp);
}
}
goto loop;
}