diff options
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/physio.9 | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/share/man/man9/physio.9 b/share/man/man9/physio.9 index a99e738b51d..ffcc7e3a80d 100644 --- a/share/man/man9/physio.9 +++ b/share/man/man9/physio.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: physio.9,v 1.6 2008/06/26 05:42:08 ray Exp $ +.\" $OpenBSD: physio.9,v 1.7 2010/09/22 01:18:57 matthew Exp $ .\" $NetBSD: physio.9,v 1.5 1999/03/16 00:40:47 garbled Exp $ .\" .\" Copyright (c) 1996 The NetBSD Foundation, Inc. @@ -28,7 +28,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: June 26 2008 $ +.Dd $Mdocdate: September 22 2010 $ .Dt PHYSIO 9 .Os .Sh NAME @@ -38,7 +38,6 @@ .Ft int .Fo "physio" .Fa "void (*strategy)(struct buf *)" -.Fa "struct buf *bp" .Fa "dev_t dev" .Fa "int flags" .Fa "void (*minphys)(struct buf *)" @@ -73,28 +72,20 @@ functions in .Fn physio always awaits the completion of the entire requested transfer before returning, unless an error condition is detected earlier. -In all cases, the buffer passed in -.Fa bp -is locked (marked as -.Dq busy ) -for the duration of the entire transfer. +.Pp +In all cases, a temporary buffer is allocated from a system pool. +This buffer will have the +.Dv B_BUSY , +.Dv B_PHYS , +and +.Dv B_RAW +flags set when passed to the strategy routine. .Pp A break-down of the arguments follows: .Bl -tag -width indent .It Fa strategy The device strategy routine to call for each chunk of data to initiate device I/O. -.It Fa bp -The buffer to use with the strategy routine. -The buffer flags will have -.Dv B_BUSY , -.Dv B_PHYS , -and -.Dv B_RAW -set when passed to the strategy routine. -If -.Dv NULL , -a buffer is allocated from a system pool. .It Fa dev The device number identifying the device to interact with. .It Fa flags |