Re: mmap.2: clarify alignment of mapping

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Hello Heinrich,

On 02/13/2018 05:47 PM, Heinrich Schuchardt wrote:
Hello Michael,

according to mmap.2 on Linux the mapping will be created at a page
boundary if addr is not NULL.

It remains unclear if this holds true for addr == NULL, too.
I have not checked the coding.

Maybe only the punctuation is wrong:
%s/mapping; on Linux,/mapping. On Linux,/

Thanks for the report. I applied the patch below.

Cheers,

Michael


diff --git a/man2/mmap.2 b/man2/mmap.2
index 88468887c..ea64eb8f0 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -64,7 +64,8 @@ argument specifies the length of the mapping (which must be greater than 0).
 If
 .I addr
 is NULL,
-then the kernel chooses the address at which to create the mapping;
+then the kernel chooses the (page-aligned) address
+at which to create the mapping;
 this is the most portable method of creating a new mapping.
 If
 .I addr
--
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