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- Implement bowrite() -- perform an asynchronous, ordered write.

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This commit is contained in:
thorpej 2000-01-21 23:22:24 +00:00
parent e3d3905ac7
commit 0ef111e8ee
1 changed files with 14 additions and 2 deletions
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16
sys/kern/vfs_bio.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_bio.c,v 1.62 1999/12/03 21:43:20 ragge Exp $ */ /* $NetBSD: vfs_bio.c,v 1.63 2000/01/21 23:22:24 thorpej Exp $ */
/*- /*-
* Copyright (c) 1994 Christopher G. Demetriou * Copyright (c) 1994 Christopher G. Demetriou
@ -450,6 +450,18 @@ bawrite(bp)
VOP_BWRITE(bp); VOP_BWRITE(bp);
} }
/*
* Ordered block write; asynchronous, but I/O will occur in order queued.
*/
void
bowrite(bp)
struct buf *bp;
{
SET(bp->b_flags, B_ASYNC | B_ORDERED);
VOP_BWRITE(bp);
}
/* /*
* Same as first half of bdwrite, mark buffer dirty, but do not release it. * Same as first half of bdwrite, mark buffer dirty, but do not release it.
*/ */
@ -563,7 +575,7 @@ brelse(bp)
already_queued: already_queued:
/* Unlock the buffer. */ /* Unlock the buffer. */
CLR(bp->b_flags, B_AGE|B_ASYNC|B_BUSY|B_NOCACHE); CLR(bp->b_flags, B_AGE|B_ASYNC|B_BUSY|B_NOCACHE|B_ORDERED);
/* Allow disk interrupts. */ /* Allow disk interrupts. */
splx(s); splx(s);