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Update mmap() comment: no more block devices, so no more block device

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cache coherency questions.

MFC after:	3 days
This commit is contained in:
Robert Watson 2008-10-22 16:50:12 +00:00
parent f32b2a16a2
commit 556c3162b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=184168
1 changed files with 0 additions and 4 deletions
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sys/vm/vm_mmap.c
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@ -187,10 +187,6 @@ ogetpagesize(td, uap)
* memory-based, such as a video framebuffer, can be mmap'd. Otherwise
* there would be no cache coherency between a descriptor and a VM mapping
* both to the same character device.
*
* Block devices can be mmap'd no matter what they represent. Cache coherency
* is maintained as long as you do not write directly to the underlying
* character device.
*/
#ifndef _SYS_SYSPROTO_H_
struct mmap_args {