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Re: [PATCH v2] mlock.2: mlock2.2: Add entry to for new mlock2 syscall

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  Re: [PATCH v2] mlock.2: mlock2.2: Add entry to for new mlock2 syscall Vlastimil Babka <vbabka@suse.cz> - 2015-09-10 11:40 +0200
    Re: [PATCH v2] mlock.2: mlock2.2: Add entry to for new mlock2 syscall Eric B Munson <emunson@akamai.com> - 2015-09-11 17:00 +0200
      Re: [PATCH v2] mlock.2: mlock2.2: Add entry to for new mlock2 syscall Michal Hocko <mhocko@kernel.org> - 2015-09-11 17:20 +0200

#1222063 — Re: [PATCH v2] mlock.2: mlock2.2: Add entry to for new mlock2 syscall

On 08/31/2015 04:20 PM, Eric B Munson wrote:
> Update the mlock.2 man page with information on mlock2() and the new
> mlockall() flag MCL_ONFAULT.
> 
> Signed-off-by: Eric B Munson <emunson@akamai.com>
> Acked-by: Michal Hocko <mhocko@suse.com>

Looks like I acked v1 too late and not v2, so:

Acked-by: Vlastimil Babka <vbabka@suse.cz>

However, looks like it won't be in Linux 4.3 so that part is outdated.
Also, what about glibc wrapper for mlock2()? Does it have to come before or
after the manpage and who gets it in?
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#1222895

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On Thu, 10 Sep 2015, Vlastimil Babka wrote:

> On 08/31/2015 04:20 PM, Eric B Munson wrote:
> > Update the mlock.2 man page with information on mlock2() and the new
> > mlockall() flag MCL_ONFAULT.
> > 
> > Signed-off-by: Eric B Munson <emunson@akamai.com>
> > Acked-by: Michal Hocko <mhocko@suse.com>
> 
> Looks like I acked v1 too late and not v2, so:
> 
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
> 
> However, looks like it won't be in Linux 4.3 so that part is outdated.
> Also, what about glibc wrapper for mlock2()? Does it have to come before or
> after the manpage and who gets it in?

V3 now has an updated version, hopefully mlock2 hits the 4.4 merge
window.

I don't know about the glibc wrapper, are we expected to write one
ourselves?  Will they even take it?  They haven't been the most open
minded about taking wrappers for system calls that are unique to Linux
in the past.

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#1222909

On Fri 11-09-15 10:57:12, Eric B Munson wrote:
> On Thu, 10 Sep 2015, Vlastimil Babka wrote:
[...]
> > Also, what about glibc wrapper for mlock2()? Does it have to come before or
> > after the manpage and who gets it in?
> 
> V3 now has an updated version, hopefully mlock2 hits the 4.4 merge
> window.
> 
> I don't know about the glibc wrapper, are we expected to write one
> ourselves?  Will they even take it?  They haven't been the most open
> minded about taking wrappers for system calls that are unique to Linux
> in the past.

I do not think we really do care about the glibc wrapper. There are many
syscalls which do not have it either (e.g. gettid).

But I guess it would be worth noting this in the man page the same way
as gettid does.
-- 
Michal Hocko
SUSE Labs
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