diff options
| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-09-11 14:26:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:59:44 -0700 |
| commit | 32a2750010981216fb788c5190fb0e646abfab30 (patch) | |
| tree | 8a3d02037101eabc254f2e63836323e4373e18a2 /ipc | |
| parent | 530fcd16d87cd2417c472a581ba5a1e501556c86 (diff) | |
| download | linux-stable-32a2750010981216fb788c5190fb0e646abfab30.tar.gz linux-stable-32a2750010981216fb788c5190fb0e646abfab30.tar.bz2 linux-stable-32a2750010981216fb788c5190fb0e646abfab30.zip | |
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 <davidlohr.bueso@hp.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/namespace.c | 3 | ||||
| -rw-r--r-- | ipc/util.c | 6 | ||||
| -rw-r--r-- | 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); |