The patch titled
LIB: add gen_pool_destroy()
has been removed from the -mm tree. Its filename is
lib-add-gen_pool_destroy.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: LIB: add gen_pool_destroy()
From: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
Modules using the genpool allocator need to be able to destroy the data
structure when unloading.
Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
Cc: Dean Nelson <dcn@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/genalloc.h | 1 +
lib/genalloc.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 31 insertions(+)
diff -puN include/linux/genalloc.h~lib-add-gen_pool_destroy include/linux/genalloc.h
--- a/include/linux/genalloc.h~lib-add-gen_pool_destroy
+++ a/include/linux/genalloc.h
@@ -31,5 +31,6 @@ struct gen_pool_chunk {
extern struct gen_pool *gen_pool_create(int, int);
extern int gen_pool_add(struct gen_pool *, unsigned long, size_t, int);
+extern void gen_pool_destroy(struct gen_pool *);
extern unsigned long gen_pool_alloc(struct gen_pool *, size_t);
extern void gen_pool_free(struct gen_pool *, unsigned long, size_t);
diff -puN lib/genalloc.c~lib-add-gen_pool_destroy lib/genalloc.c
--- a/lib/genalloc.c~lib-add-gen_pool_destroy
+++ a/lib/genalloc.c
@@ -71,6 +71,36 @@ EXPORT_SYMBOL(gen_pool_add);
/*
+ * Destroy a memory pool. Verifies that there are no outstanding allocations.
+ *
+ * @pool: pool to destroy
+ */
+void gen_pool_destroy(struct gen_pool *pool)
+{
+ struct list_head *_chunk, *_next_chunk;
+ struct gen_pool_chunk *chunk;
+ int order = pool->min_alloc_order;
+ int bit, end_bit;
+
+
+ write_lock(&pool->lock);
+ list_for_each_safe(_chunk, _next_chunk, &pool->chunks) {
+ chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk);
+ list_del(&chunk->next_chunk);
+
+ end_bit = (chunk->end_addr - chunk->start_addr) >> order;
+ bit = find_next_bit(chunk->bits, end_bit, 0);
+ BUG_ON(bit < end_bit);
+
+ kfree(chunk);
+ }
+ kfree(pool);
+ return;
+}
+EXPORT_SYMBOL(gen_pool_destroy);
+
+
+/*
* Allocate the requested number of bytes from the specified pool.
* Uses a first-fit algorithm.
*
_
Patches currently in -mm which might be from swise@xxxxxxxxxxxxxxxxxxxxx are
origin.patch
-
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