From 32a2750010981216fb788c5190fb0e646abfab30 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Wed, 11 Sep 2013 14:26:29 -0700 Subject: [PATCH] ipc: drop ipc_lock_by_ptr After previous cleanups and optimizations, this function is no longer heavily used and we don't have a good reason to keep it. Update the few remaining callers and get rid of it. Signed-off-by: Davidlohr Bueso Cc: Sedat Dilek Cc: Rik van Riel Cc: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/namespace.c | 3 ++- ipc/util.c | 6 ++++-- ipc/util.h | 6 ------ 3 files changed, 6 insertions(+), 9 deletions(-) diff --git a/ipc/namespace.c b/ipc/namespace.c index d43d9384bb2d..59451c1e214d 100644 --- a/ipc/namespace.c +++ b/ipc/namespace.c @@ -89,7 +89,8 @@ void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, perm = idr_find(&ids->ipcs_idr, next_id); if (perm == NULL) continue; - ipc_lock_by_ptr(perm); + rcu_read_lock(); + ipc_lock_object(perm); free(ns, perm); total++; } diff --git a/ipc/util.c b/ipc/util.c index 1ddadcf9a2ab..9f6aa30d2e0f 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -205,7 +205,8 @@ static struct kern_ipc_perm *ipc_findkey(struct ipc_ids *ids, key_t key) continue; } - ipc_lock_by_ptr(ipc); + rcu_read_lock(); + ipc_lock_object(ipc); return ipc; } @@ -838,7 +839,8 @@ static struct kern_ipc_perm *sysvipc_find_ipc(struct ipc_ids *ids, loff_t pos, ipc = idr_find(&ids->ipcs_idr, pos); if (ipc != NULL) { *new_pos = pos + 1; - ipc_lock_by_ptr(ipc); + rcu_read_lock(); + ipc_lock_object(ipc); return ipc; } } diff --git a/ipc/util.h b/ipc/util.h index 0a362ffca972..14b0a2adba08 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -171,12 +171,6 @@ static inline void ipc_assert_locked_object(struct kern_ipc_perm *perm) assert_spin_locked(&perm->lock); } -static inline void ipc_lock_by_ptr(struct kern_ipc_perm *perm) -{ - rcu_read_lock(); - ipc_lock_object(perm); -} - static inline void ipc_unlock(struct kern_ipc_perm *perm) { ipc_unlock_object(perm); -- 2.20.1