idr: deprecate idr_pre_get() and idr_get_new[_above]()

Now that all in-kernel users are converted to ues the new alloc
interface, mark the old interface deprecated.  We should be able to
remove these in a few releases.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 36 deletions

diff --git a/lib/idr.c b/lib/idr.c
index 4f82a284c6a2..c6fb8295507b 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -184,20 +184,7 @@ static void idr_mark_full(struct idr_layer **pa, int id)
         }
 }
 
-/**
- * idr_pre_get - reserve resources for idr allocation
- * @idp:        idr handle
- * @gfp_mask:   memory allocation flags
- *
- * This function should be called prior to calling the idr_get_new* functions.
- * It preallocates enough memory to satisfy the worst possible allocation. The
- * caller should pass in GFP_KERNEL if possible.  This of course requires that
- * no spinning locks be held.
- *
- * If the system is REALLY out of memory this function returns %0,
- * otherwise %1.
- */
-int idr_pre_get(struct idr *idp, gfp_t gfp_mask)
+int __idr_pre_get(struct idr *idp, gfp_t gfp_mask)
 {
         while (idp->id_free_cnt < MAX_IDR_FREE) {
                 struct idr_layer *new;
@@ -208,7 +195,7 @@ int idr_pre_get(struct idr *idp, gfp_t gfp_mask)
         }
         return 1;
 }
-EXPORT_SYMBOL(idr_pre_get);
+EXPORT_SYMBOL(__idr_pre_get);
 
 /**
  * sub_alloc - try to allocate an id without growing the tree depth
@@ -375,25 +362,7 @@ static void idr_fill_slot(struct idr *idr, void *ptr, int id,
         idr_mark_full(pa, id);
 }
 
-/**
- * idr_get_new_above - allocate new idr entry above or equal to a start id
- * @idp: idr handle
- * @ptr: pointer you want associated with the id
- * @starting_id: id to start search at
- * @id: pointer to the allocated handle
- *
- * This is the allocate id function.  It should be called with any
- * required locks.
- *
- * If allocation from IDR's private freelist fails, idr_get_new_above() will
- * return %-EAGAIN.  The caller should retry the idr_pre_get() call to refill
- * IDR's preallocation and then retry the idr_get_new_above() call.
- *
- * If the idr is full idr_get_new_above() will return %-ENOSPC.
- *
- * @id returns a value in the range @starting_id ... %0x7fffffff
- */
-int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
+int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
 {
         struct idr_layer *pa[MAX_IDR_LEVEL + 1];
         int rv;
@@ -406,7 +375,7 @@ int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
         *id = rv;
         return 0;
 }
-EXPORT_SYMBOL(idr_get_new_above);
+EXPORT_SYMBOL(__idr_get_new_above);
 
 /**
  * idr_preload - preload for idr_alloc()
@@ -907,7 +876,7 @@ static void free_bitmap(struct ida *ida, struct ida_bitmap *bitmap)
 int ida_pre_get(struct ida *ida, gfp_t gfp_mask)
 {
         /* allocate idr_layers */
-        if (!idr_pre_get(&ida->idr, gfp_mask))
+        if (!__idr_pre_get(&ida->idr, gfp_mask))
                 return 0;
 
         /* allocate free_bitmap */