user/sven/linux.git/ipc/util.c, branch v3.16.58

ipc: remove use of seq_printf return value

2017-02-23T03:54:11Z

commit 7f032d6ef6154868a2a5d5f6b2c3f8587292196c upstream. The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Ben Hutchings

Initialize msg/shm IPC objects before doing ipc_addid()

2015-10-28T10:33:06Z

commit b9a532277938798b53178d5a66af6e2915cb27cf upstream. As reported by Dmitry Vyukov, we really shouldn't do ipc_addid() before having initialized the IPC object state. Yes, we initialize the IPC object in a locked state, but with all the lockless RCU lookup work, that IPC object lock no longer means that the state cannot be seen. We already did this for the IPC semaphore code (see commit e8577d1f0329: "ipc/sem.c: fully initialize sem_array before making it visible") but we clearly forgot about msg and shm. Reported-by: Dmitry Vyukov Cc: Manfred Spraul Cc: Davidlohr Bueso Signed-off-by: Linus Torvalds [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques

ipc, kernel: clear whitespace

2014-06-06T23:08:14Z

trailing whitespace Signed-off-by: Paul McQuade Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: constify ipc_ops

2014-06-06T23:08:14Z

There is no need to recreate the very same ipc_ops structure on every kernel entry for msgget/semget/shmget. Just declare it static and be done with it. While at it, constify it as we don't modify the structure at runtime. Found in the PaX patch, written by the PaX Team. Signed-off-by: Mathias Krause Cc: PaX Team Cc: Davidlohr Bueso Cc: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: use device_initcall

2014-04-07T23:36:11Z

... since __initcall is now deprecated. Signed-off-by: Davidlohr Bueso Cc: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: delete seq_max field in struct ipc_ids

2014-01-28T05:02:40Z

This field is only used to reset the ids seq number if it exceeds the smaller of INT_MAX/SEQ_MULTIPLIER and USHRT_MAX, and can therefore be moved out of the structure and into its own macro. Since each ipc_namespace contains a table of 3 pointers to struct ipc_ids we can save space in instruction text: text data bss dec hex filename 56232 2348 24 58604 e4ec ipc/built-in.o 56216 2348 24 58588 e4dc ipc/built-in.o-after Signed-off-by: Davidlohr Bueso Reviewed-by: Jonathan Gonzalez Cc: Aswin Chandramouleeswaran Cc: Rik van Riel Acked-by: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: simplify sysvipc_proc_open() return

2014-01-28T05:02:40Z

Get rid of silly/useless label jumping. Signed-off-by: Davidlohr Bueso Cc: Aswin Chandramouleeswaran Cc: Rik van Riel Acked-by: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: remove useless return statement

2014-01-28T05:02:40Z

Only found in ipc_rmid(). Signed-off-by: Davidlohr Bueso Cc: Aswin Chandramouleeswaran Cc: Rik van Riel Acked-by: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: remove braces for single statements

2014-01-28T05:02:39Z

Deal with checkpatch messages: WARNING: braces {} are not necessary for single statement blocks Signed-off-by: Davidlohr Bueso Cc: Aswin Chandramouleeswaran Cc: Rik van Riel Acked-by: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ipc: standardize code comments

2014-01-28T05:02:39Z

IPC commenting style is all over the place, *specially* in util.c. This patch orders things a bit. Signed-off-by: Davidlohr Bueso Cc: Aswin Chandramouleeswaran Cc: Rik van Riel Acked-by: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds