| 123456789101112131415161718192021222324252627282930313233343536373839404142 |
- /*
- * Copyright (C) 2001 Sistina Software
- *
- * This file is released under the GPL.
- *
- * Kcopyd provides a simple interface for copying an area of one
- * block-device to one or more other block-devices, with an asynchronous
- * completion notification.
- */
- #ifndef DM_KCOPYD_H
- #define DM_KCOPYD_H
- #include "dm-io.h"
- /* FIXME: make this configurable */
- #define KCOPYD_MAX_REGIONS 8
- #define KCOPYD_IGNORE_ERROR 1
- /*
- * To use kcopyd you must first create a kcopyd client object.
- */
- struct kcopyd_client;
- int kcopyd_client_create(unsigned int num_pages, struct kcopyd_client **result);
- void kcopyd_client_destroy(struct kcopyd_client *kc);
- /*
- * Submit a copy job to kcopyd. This is built on top of the
- * previous three fns.
- *
- * read_err is a boolean,
- * write_err is a bitset, with 1 bit for each destination region
- */
- typedef void (*kcopyd_notify_fn)(int read_err,
- unsigned int write_err, void *context);
- int kcopyd_copy(struct kcopyd_client *kc, struct io_region *from,
- unsigned int num_dests, struct io_region *dests,
- unsigned int flags, kcopyd_notify_fn fn, void *context);
- #endif
|
