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ipc: get rid of ipc_lock_down()

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Remove the ipc_lock_down() routines: they used to call idr_find() locklessly
(given that the ipc ids lock was already held), so they are not needed
anymore.

Signed-off-by: Nadia Derbey <[email protected]>
Acked-by: "Paul E. McKenney" <[email protected]>
Cc: Manfred Spraul <[email protected]>
Cc: Jim Houston <[email protected]>
Cc: Pierre Peiffer <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nadia Derbey 2008-07-25 01:48:03 -07:00 • committed by Linus Torvalds
commit 00c2bf85d8
3 changed files with 4 additions and 75 deletions
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6
ipc/util.h
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@ -102,11 +102,6 @@ void* ipc_rcu_alloc(int size);
void ipc_rcu_getref(void *ptr);
void ipc_rcu_putref(void *ptr);
/*
* ipc_lock_down: called with rw_mutex held
* ipc_lock: called without that lock held
*/
struct kern_ipc_perm *ipc_lock_down(struct ipc_ids *, int);
struct kern_ipc_perm *ipc_lock(struct ipc_ids *, int);
void kernel_to_ipc64_perm(struct kern_ipc_perm *in, struct ipc64_perm *out);
@ -155,7 +150,6 @@ static inline void ipc_unlock(struct kern_ipc_perm *perm)
rcu_read_unlock();
}
struct kern_ipc_perm *ipc_lock_check_down(struct ipc_ids *ids, int id);
struct kern_ipc_perm *ipc_lock_check(struct ipc_ids *ids, int id);
int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids,
struct ipc_ops *ops, struct ipc_params *params);