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Add BUF_ISREAD() and BUF_ISWRITE() macros to avoid silly code checking

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for the B_WRITE pseudo-flag: (bp->b_flags & B_READ) == B_WRITE
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pooka 2007-11-21 16:30:01 +00:00
parent 8bb343aabb
commit 4a5167232c
1 changed files with 5 additions and 1 deletions
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6
sys/sys/buf.h
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@ -1,4 +1,4 @@
/* $NetBSD: buf.h,v 1.98 2007/10/08 18:04:06 ad Exp $ */
/* $NetBSD: buf.h,v 1.99 2007/11/21 16:30:01 pooka Exp $ */
/*-
* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@ -226,6 +226,10 @@ do { \
#define BC_INVAL B_INVAL
#define BC_NOCACHE B_NOCACHE
/* Avoid weird code due to B_WRITE being a "pseudo flag" */
#define BUF_ISREAD(bp) (((bp)->b_flags & B_READ) == B_READ)
#define BUF_ISWRITE(bp) (((bp)->b_flags & B_READ) == B_WRITE)
/*
* This structure describes a clustered I/O. It is stored in the b_saveaddr
* field of the buffer on which I/O is done. At I/O completion, cluster