Messages in this thread | | | Date | Fri, 21 Sep 2007 11:55:50 +0200 | From | Cedric Le Goater <> | Subject | Re: [PATCH 3/3] user.c: #ifdef ->mq_bytes |
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Hello Alexey !
Alexey Dobriyan wrote: > for those who deselect POSIX message queues. > > Reduces SLAB size of user_struct from 64 to 32 bytes here, > SLUB size -- from 40 bytes to 32 bytes. > > Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> > --- > > include/linux/sched.h | 2 ++ > kernel/user.c | 2 -- > 2 files changed, 2 insertions(+), 2 deletions(-) > > --- a/include/linux/sched.h > +++ b/include/linux/sched.h > @@ -583,8 +583,10 @@ struct user_struct { > atomic_t inotify_watches; /* How many inotify watches does this user have? */ > atomic_t inotify_devs; /* How many inotify devs does this user have opened? */ > #endif > +#ifdef CONFIG_POSIX_MQUEUE > /* protected by mq_lock */ > unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */ > +#endif > unsigned long locked_shm; /* How many pages of mlocked shm ? */
while you are it, it seems possible to #ifdef locked_shm also. it's a bit more complex because the code is mm/ and there are some links with the hugetlbfs also.
Cheers,
C.
> #ifdef CONFIG_KEYS > --- a/kernel/user.c > +++ b/kernel/user.c > @@ -44,7 +44,6 @@ struct user_struct root_user = { > .processes = ATOMIC_INIT(1), > .files = ATOMIC_INIT(0), > .sigpending = ATOMIC_INIT(0), > - .mq_bytes = 0, > .locked_shm = 0, > #ifdef CONFIG_KEYS > .uid_keyring = &root_user_keyring, > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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