Commit d5470b59 authored by Adrian Bunk's avatar Adrian Bunk Committed by Linus Torvalds
Browse files

fs/aio.c: make 3 functions static



Make the following needlessly global functions static:

- __put_ioctx()
- lookup_ioctx()
- io_submit_one()
Signed-off-by: default avatarAdrian Bunk <bunk@kernel.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 07d45da6
......@@ -191,6 +191,43 @@ static int aio_setup_ring(struct kioctx *ctx)
kunmap_atomic((void *)((unsigned long)__event & PAGE_MASK), km); \
} while(0)
/* __put_ioctx
* Called when the last user of an aio context has gone away,
* and the struct needs to be freed.
*/
static void __put_ioctx(struct kioctx *ctx)
{
unsigned nr_events = ctx->max_reqs;
BUG_ON(ctx->reqs_active);
cancel_delayed_work(&ctx->wq);
cancel_work_sync(&ctx->wq.work);
aio_free_ring(ctx);
mmdrop(ctx->mm);
ctx->mm = NULL;
pr_debug("__put_ioctx: freeing %p\n", ctx);
kmem_cache_free(kioctx_cachep, ctx);
if (nr_events) {
spin_lock(&aio_nr_lock);
BUG_ON(aio_nr - nr_events > aio_nr);
aio_nr -= nr_events;
spin_unlock(&aio_nr_lock);
}
}
#define get_ioctx(kioctx) do { \
BUG_ON(atomic_read(&(kioctx)->users) <= 0); \
atomic_inc(&(kioctx)->users); \
} while (0)
#define put_ioctx(kioctx) do { \
BUG_ON(atomic_read(&(kioctx)->users) <= 0); \
if (unlikely(atomic_dec_and_test(&(kioctx)->users))) \
__put_ioctx(kioctx); \
} while (0)
/* ioctx_alloc
* Allocates and initializes an ioctx. Returns an ERR_PTR if it failed.
*/
......@@ -361,32 +398,6 @@ void exit_aio(struct mm_struct *mm)
}
}
/* __put_ioctx
* Called when the last user of an aio context has gone away,
* and the struct needs to be freed.
*/
void __put_ioctx(struct kioctx *ctx)
{
unsigned nr_events = ctx->max_reqs;
BUG_ON(ctx->reqs_active);
cancel_delayed_work(&ctx->wq);
cancel_work_sync(&ctx->wq.work);
aio_free_ring(ctx);
mmdrop(ctx->mm);
ctx->mm = NULL;
pr_debug("__put_ioctx: freeing %p\n", ctx);
kmem_cache_free(kioctx_cachep, ctx);
if (nr_events) {
spin_lock(&aio_nr_lock);
BUG_ON(aio_nr - nr_events > aio_nr);
aio_nr -= nr_events;
spin_unlock(&aio_nr_lock);
}
}
/* aio_get_req
* Allocate a slot for an aio request. Increments the users count
* of the kioctx so that the kioctx stays around until all requests are
......@@ -545,7 +556,7 @@ int aio_put_req(struct kiocb *req)
/* Lookup an ioctx id. ioctx_list is lockless for reads.
* FIXME: this is O(n) and is only suitable for development.
*/
struct kioctx *lookup_ioctx(unsigned long ctx_id)
static struct kioctx *lookup_ioctx(unsigned long ctx_id)
{
struct kioctx *ioctx;
struct mm_struct *mm;
......@@ -1552,7 +1563,7 @@ static int aio_wake_function(wait_queue_t *wait, unsigned mode,
return 1;
}
int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
struct iocb *iocb)
{
struct kiocb *req;
......
......@@ -209,27 +209,8 @@ extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
extern int aio_put_req(struct kiocb *iocb);
extern void kick_iocb(struct kiocb *iocb);
extern int aio_complete(struct kiocb *iocb, long res, long res2);
extern void __put_ioctx(struct kioctx *ctx);
struct mm_struct;
extern void exit_aio(struct mm_struct *mm);
extern struct kioctx *lookup_ioctx(unsigned long ctx_id);
extern int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
struct iocb *iocb);
/* semi private, but used by the 32bit emulations: */
struct kioctx *lookup_ioctx(unsigned long ctx_id);
int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
struct iocb *iocb);
#define get_ioctx(kioctx) do { \
BUG_ON(atomic_read(&(kioctx)->users) <= 0); \
atomic_inc(&(kioctx)->users); \
} while (0)
#define put_ioctx(kioctx) do { \
BUG_ON(atomic_read(&(kioctx)->users) <= 0); \
if (unlikely(atomic_dec_and_test(&(kioctx)->users))) \
__put_ioctx(kioctx); \
} while (0)
#define io_wait_to_kiocb(wait) container_of(wait, struct kiocb, ki_wait)
......
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