tree 89b2ed22547a9fca11f87eb6cba68bb84fcf1b8a
parent 8f4a3809c18ff3107bdbb1fabe3f4e5d2a928321
author Pierre Peiffer <pierre.peiffer@bull.net> 1209456054 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1209481574 -0700

IPC: consolidate all xxxctl_down() functions

semctl_down(), msgctl_down() and shmctl_down() are used to handle the same set
of commands for each kind of IPC.  They all start to do the same job (they
retrieve the ipc and do some permission checks) before handling the commands
on their own.

This patch proposes to consolidate this by moving these same pieces of code
into one common function called ipcctl_pre_down().

It simplifies a little these xxxctl_down() functions and increases a little
the maintainability.

Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>