idr: rename some of the idr APIs internal routines
idr: rename some of the idr APIs internal routines

This is a trivial patch that renames:

   . alloc_layer to get_from_free_list since it idr_pre_get that actually
     allocates memory.
   . free_layer to move_to_free_list since memory is not actually freed there.

This makes things more clear for the next patches.

Signed-off-by: Nadia Derbey <a8b90dedb85dd7dfd963e59841628d6add5c2126@bull.net>
Reviewed-by: "Paul E. McKenney" <1e0ce936bb9b355d257bf5790d2513c3f28be22b@us.ibm.com>
Cc: Manfred Spraul <e4eddfaff1fc5d7affa656f47ee4d83207ccac30@colorfullife.com>
Cc: Jim Houston <f554036429e41021e9adf19296a065504e2d7094@comcast.net>
Cc: Pierre Peiffer <9116cb75284716ec7c68aac39c5a93b381018f98@gmail.com>
Acked-by: Rik van Riel <a21938f5d463ddf41aa718934c205ca2cce8ebbc@redhat.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs