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![Ilya Dryomov](/assets/img/avatar_default.png)
Speed up reads, discards and zeroouts through RBD_OBJ_FLAG_MAY_EXIST and RBD_OBJ_FLAG_NOOP_FOR_NONEXISTENT based on object map. Invalid object maps are not trusted, but still updated. Note that we never iterate, resize or invalidate object maps. If object-map feature is enabled but object map fails to load, we just fail the requester (either "rbd map" or I/O, by way of post-acquire action). Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_CEPH_CLS_LOCK_CLIENT_H
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#define _LINUX_CEPH_CLS_LOCK_CLIENT_H
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#include <linux/ceph/osd_client.h>
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enum ceph_cls_lock_type {
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CEPH_CLS_LOCK_NONE = 0,
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CEPH_CLS_LOCK_EXCLUSIVE = 1,
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CEPH_CLS_LOCK_SHARED = 2,
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};
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struct ceph_locker_id {
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struct ceph_entity_name name; /* locker's client name */
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char *cookie; /* locker's cookie */
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};
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struct ceph_locker_info {
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struct ceph_entity_addr addr; /* locker's address */
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};
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struct ceph_locker {
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struct ceph_locker_id id;
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struct ceph_locker_info info;
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};
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int ceph_cls_lock(struct ceph_osd_client *osdc,
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struct ceph_object_id *oid,
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struct ceph_object_locator *oloc,
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char *lock_name, u8 type, char *cookie,
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char *tag, char *desc, u8 flags);
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int ceph_cls_unlock(struct ceph_osd_client *osdc,
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struct ceph_object_id *oid,
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struct ceph_object_locator *oloc,
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char *lock_name, char *cookie);
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int ceph_cls_break_lock(struct ceph_osd_client *osdc,
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struct ceph_object_id *oid,
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struct ceph_object_locator *oloc,
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char *lock_name, char *cookie,
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struct ceph_entity_name *locker);
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int ceph_cls_set_cookie(struct ceph_osd_client *osdc,
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struct ceph_object_id *oid,
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struct ceph_object_locator *oloc,
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char *lock_name, u8 type, char *old_cookie,
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char *tag, char *new_cookie);
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void ceph_free_lockers(struct ceph_locker *lockers, u32 num_lockers);
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int ceph_cls_lock_info(struct ceph_osd_client *osdc,
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struct ceph_object_id *oid,
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struct ceph_object_locator *oloc,
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char *lock_name, u8 *type, char **tag,
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struct ceph_locker **lockers, u32 *num_lockers);
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int ceph_cls_assert_locked(struct ceph_osd_request *req, int which,
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char *lock_name, u8 type, char *cookie, char *tag);
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#endif
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