3.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Davidlohr Bueso <davidlohr.bueso@xxxxxx>
commit 32a2750010981216fb788c5190fb0e646abfab30 upstream.
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@xxxxxx>
Cc: Sedat Dilek <sedat.dilek@xxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
ipc/namespace.c | 3 ++-
ipc/util.c | 6 ++++--
ipc/util.h | 6 ------
3 files changed, 6 insertions(+), 9 deletions(-)
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -89,7 +89,8 @@ void free_ipcs(struct ipc_namespace *ns,
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++;
}
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -205,7 +205,8 @@ static struct kern_ipc_perm *ipc_findkey
continue;
}
- ipc_lock_by_ptr(ipc);
+ rcu_read_lock();
+ ipc_lock_object(ipc);
return ipc;
}
@@ -830,7 +831,8 @@ static struct kern_ipc_perm *sysvipc_fin
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;
}
}
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -179,12 +179,6 @@ static inline void ipc_assert_locked_obj
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);
--
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