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| author |   millert <millert@openbsd.org> | 2001-10-05 05:07:47 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 2001-10-05 05:07:47 +0000 |
| commit | d2215859ccf93332d2fe484d5014e81e893c9958 (patch) | |
| tree | c0a25a45b032a0709a9431438703bda63f84f0fc /share/man | |
| parent | Be careful when updating register in TIOCM* operations (do operations on (diff) | |
| download | wireguard-openbsd-d2215859ccf93332d2fe484d5014e81e893c9958.tar.xz wireguard-openbsd-d2215859ccf93332d2fe484d5014e81e893c9958.zip | |
Document the skew argument to extent_alloc and extent_alloc_subregion.
From NetBSD.
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man9/extent.9 | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/share/man/man9/extent.9 b/share/man/man9/extent.9 index 125e6224986..bdedd530b3f 100644 --- a/share/man/man9/extent.9 +++ b/share/man/man9/extent.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: extent.9,v 1.5 2000/11/10 20:02:20 todd Exp $ +.\" $OpenBSD: extent.9,v 1.6 2001/10/05 05:07:47 millert Exp $ .\" $NetBSD: extent.9,v 1.15 1999/03/16 00:40:47 garbled Exp $ .\" .\" Copyright (c) 1996, 1998 The NetBSD Foundation, Inc. @@ -55,9 +55,20 @@ .Ft void .Fn extent_destroy "struct extent *ex" .Ft int -.Fn extent_alloc "struct extent *ex" "u_long size" "u_long alignment" "u_long boundary" "int flags" "u_long *result" +.Fn extent_alloc "struct extent *ex" "u_long size" "u_long alignment" "u_long skew" "u_long boundary" "int flags" "u_long *result" .Ft int -.Fn extent_alloc_subregion "struct extent *ex" "u_long substart" "u_long subend" "u_long size" "u_long alignment" "u_long boundary" "u_long flags" "u_long *result" +.\" too many arguments for a single .Fn +.Fo extent_alloc_subregion +.Fa "struct extent *ex" +.Fa "u_long substart" +.Fa "u_long subend" +.Fa "u_long size" +.Fa "u_long alignment" +.Fa "u_long skew" +.Fa "u_long boundary" +.Fa "int flags" +.Fa "u_long *result" +.Fc .Ft int .Fn extent_alloc_region "struct extent *ex" "u_long start" "u_long size" "int flags" .Ft int @@ -181,6 +192,20 @@ If no alignment is necessary, the value .Dv EX_NOALIGN should be specified. If +.Fa skew +is non-zero, it modifies the requested alignment result in the following way: +the value +.Po Fa result +\& - +.Fa skew +.Pc +is aligned to +.Fa alignment +boundaries. +.Fa skew +must be a smaller number than +.Fa alignment . +If .Fa boundary is not .Dv EX_NOBOUNDARY , @@ -196,7 +221,8 @@ boundary line, but the end of the region will not touch nor cross a boundary line. A .Fa boundary -argument smaller than the size of the request is invalid. +argument smaller than the sum of the requested skew and the size of +the request is invalid. Upon successful completion, .Fa *result will contain the start of the allocated region. |