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author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2014-06-06 14:37:13 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-06 16:08:12 -0700 |
commit | aefb76829742803751725bc75bcdc43fe803ac22 (patch) | |
tree | 85004d21e1aa64ac890e6032d16538b242e0d8ed /lib | |
parent | b93804b2fcdb35cc45f95ad77cbe23cc620f6593 (diff) | |
download | op-kernel-dev-aefb76829742803751725bc75bcdc43fe803ac22.zip op-kernel-dev-aefb76829742803751725bc75bcdc43fe803ac22.tar.gz |
idr: don't need to shink the free list when idr_remove()
After idr subsystem is changed to RCU-awared, the free layer will not go
to the free list. The free list will not be filled up when
idr_remove(). So we don't need to shink it too.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/idr.c | 16 |
1 files changed, 0 insertions, 16 deletions
@@ -18,12 +18,6 @@ * pointer or what ever, we treat it as a (void *). You can pass this * id to a user for him to pass back at a later time. You then pass * that id to this code and it returns your pointer. - - * You can release ids at any time. When all ids are released, most of - * the memory is returned (we keep MAX_IDR_FREE) in a local pool so we - * don't need to go to the memory "store" during an id allocate, just - * so you don't need to be too concerned about locking and conflicts - * with the slab allocator. */ #ifndef TEST // to test in user space... @@ -584,16 +578,6 @@ void idr_remove(struct idr *idp, int id) bitmap_clear(to_free->bitmap, 0, IDR_SIZE); free_layer(idp, to_free); } - while (idp->id_free_cnt >= MAX_IDR_FREE) { - p = get_from_free_list(idp); - /* - * Note: we don't call the rcu callback here, since the only - * layers that fall into the freelist are those that have been - * preallocated. - */ - kmem_cache_free(idr_layer_cache, p); - } - return; } EXPORT_SYMBOL(idr_remove); |