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rbd: eliminate sparse warnings

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Fengguang Wu reminded me that there were outstanding sparse reports
in the ceph and rbd code.  This patch fixes these problems in rbd
that lead to those reports:
    - Convert functions that are never referenced externally to have
      static scope.
    - Add a lockdep annotation to rbd_request_fn(), because it
      releases a lock before acquiring it again.

This partially resolves:
    http://tracker.ceph.com/issues/4184

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-02-19 12:25:56 -06:00
parent c9ffc77ade
commit cc344fa1b5
1 changed files with 7 additions and 5 deletions
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12
drivers/block/rbd.c
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@ -1141,7 +1141,7 @@ static bool obj_request_type_valid(enum obj_request_type type)
} }
} }
struct ceph_osd_req_op *rbd_osd_req_op_create(u16 opcode, ...) static struct ceph_osd_req_op *rbd_osd_req_op_create(u16 opcode, ...)
{ {
struct ceph_osd_req_op *op; struct ceph_osd_req_op *op;
va_list args; va_list args;
@ -1537,7 +1537,8 @@ static void rbd_obj_request_destroy(struct kref *kref)
* that comprises the image request, and the Linux request pointer * that comprises the image request, and the Linux request pointer
* (if there is one). * (if there is one).
*/ */
struct rbd_img_request *rbd_img_request_create(struct rbd_device *rbd_dev, static struct rbd_img_request *rbd_img_request_create(
struct rbd_device *rbd_dev,
u64 offset, u64 length, u64 offset, u64 length,
bool write_request) bool write_request)
{ {
@ -1971,6 +1972,7 @@ out:
} }
static void rbd_request_fn(struct request_queue *q) static void rbd_request_fn(struct request_queue *q)
__releases(q->queue_lock) __acquires(q->queue_lock)
{ {
struct rbd_device *rbd_dev = q->queuedata; struct rbd_device *rbd_dev = q->queuedata;
bool read_only = rbd_dev->mapping.read_only; bool read_only = rbd_dev->mapping.read_only;
@ -2705,7 +2707,7 @@ static void rbd_spec_free(struct kref *kref)
kfree(spec); kfree(spec);
} }
struct rbd_device *rbd_dev_create(struct rbd_client *rbdc, static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
struct rbd_spec *spec) struct rbd_spec *spec)
{ {
struct rbd_device *rbd_dev; struct rbd_device *rbd_dev;
@ -4256,7 +4258,7 @@ static void rbd_sysfs_cleanup(void)
device_unregister(&rbd_root_dev); device_unregister(&rbd_root_dev);
} }
int __init rbd_init(void) static int __init rbd_init(void)
{ {
int rc; int rc;
@ -4272,7 +4274,7 @@ int __init rbd_init(void)
return 0; return 0;
} }
void __exit rbd_exit(void) static void __exit rbd_exit(void)
{ {
rbd_sysfs_cleanup(); rbd_sysfs_cleanup();
} }