diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-bufio.c | 8 | ||||
| -rw-r--r-- | drivers/md/dm-bufio.h | 148 | ||||
| -rw-r--r-- | drivers/md/dm-integrity.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-snap-persistent.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-verity.h | 2 | ||||
| -rw-r--r-- | drivers/md/persistent-data/dm-block-manager.c | 2 |
6 files changed, 8 insertions, 156 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index f5360a6260ff..87795a361d09 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -6,7 +6,7 @@ * This file is released under the GPL. */ -#include "dm-bufio.h" +#include <linux/dm-bufio.h> #include <linux/device-mapper.h> #include <linux/dm-io.h> @@ -1478,13 +1478,13 @@ void dm_bufio_forget(struct dm_bufio_client *c, sector_t block) dm_bufio_unlock(c); } -EXPORT_SYMBOL(dm_bufio_forget); +EXPORT_SYMBOL_GPL(dm_bufio_forget); void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n) { c->minimum_buffers = n; } -EXPORT_SYMBOL(dm_bufio_set_minimum_buffers); +EXPORT_SYMBOL_GPL(dm_bufio_set_minimum_buffers); unsigned dm_bufio_get_block_size(struct dm_bufio_client *c) { @@ -1690,7 +1690,7 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign INIT_LIST_HEAD(&c->reserved_buffers); c->need_reserved_buffers = reserved_buffers; - c->minimum_buffers = DM_BUFIO_MIN_BUFFERS; + dm_bufio_set_minimum_buffers(c, DM_BUFIO_MIN_BUFFERS); init_waitqueue_head(&c->free_buffer_wait); c->async_write_error = 0; diff --git a/drivers/md/dm-bufio.h b/drivers/md/dm-bufio.h deleted file mode 100644 index be732d3f8611..000000000000 --- a/drivers/md/dm-bufio.h +++ /dev/null @@ -1,148 +0,0 @@ -/* - * Copyright (C) 2009-2011 Red Hat, Inc. - * - * Author: Mikulas Patocka <mpatocka@redhat.com> - * - * This file is released under the GPL. - */ - -#ifndef DM_BUFIO_H -#define DM_BUFIO_H - -#include <linux/blkdev.h> -#include <linux/types.h> - -/*----------------------------------------------------------------*/ - -struct dm_bufio_client; -struct dm_buffer; - -/* - * Create a buffered IO cache on a given device - */ -struct dm_bufio_client * -dm_bufio_client_create(struct block_device *bdev, unsigned block_size, - unsigned reserved_buffers, unsigned aux_size, - void (*alloc_callback)(struct dm_buffer *), - void (*write_callback)(struct dm_buffer *)); - -/* - * Release a buffered IO cache. - */ -void dm_bufio_client_destroy(struct dm_bufio_client *c); - -/* - * Set the sector range. - * When this function is called, there must be no I/O in progress on the bufio - * client. - */ -void dm_bufio_set_sector_offset(struct dm_bufio_client *c, sector_t start); - -/* - * WARNING: to avoid deadlocks, these conditions are observed: - * - * - At most one thread can hold at most "reserved_buffers" simultaneously. - * - Each other threads can hold at most one buffer. - * - Threads which call only dm_bufio_get can hold unlimited number of - * buffers. - */ - -/* - * Read a given block from disk. Returns pointer to data. Returns a - * pointer to dm_buffer that can be used to release the buffer or to make - * it dirty. - */ -void *dm_bufio_read(struct dm_bufio_client *c, sector_t block, - struct dm_buffer **bp); - -/* - * Like dm_bufio_read, but return buffer from cache, don't read - * it. If the buffer is not in the cache, return NULL. - */ -void *dm_bufio_get(struct dm_bufio_client *c, sector_t block, - struct dm_buffer **bp); - -/* - * Like dm_bufio_read, but don't read anything from the disk. It is - * expected that the caller initializes the buffer and marks it dirty. - */ -void *dm_bufio_new(struct dm_bufio_client *c, sector_t block, - struct dm_buffer **bp); - -/* - * Prefetch the specified blocks to the cache. - * The function starts to read the blocks and returns without waiting for - * I/O to finish. - */ -void dm_bufio_prefetch(struct dm_bufio_client *c, - sector_t block, unsigned n_blocks); - -/* - * Release a reference obtained with dm_bufio_{read,get,new}. The data - * pointer and dm_buffer pointer is no longer valid after this call. - */ -void dm_bufio_release(struct dm_buffer *b); - -/* - * Mark a buffer dirty. It should be called after the buffer is modified. - * - * In case of memory pressure, the buffer may be written after - * dm_bufio_mark_buffer_dirty, but before dm_bufio_write_dirty_buffers. So - * dm_bufio_write_dirty_buffers guarantees that the buffer is on-disk but - * the actual writing may occur earlier. - */ -void dm_bufio_mark_buffer_dirty(struct dm_buffer *b); - -/* - * Mark a part of the buffer dirty. - * - * The specified part of the buffer is scheduled to be written. dm-bufio may - * write the specified part of the buffer or it may write a larger superset. - */ -void dm_bufio_mark_partial_buffer_dirty(struct dm_buffer *b, - unsigned start, unsigned end); - -/* - * Initiate writing of dirty buffers, without waiting for completion. - */ -void dm_bufio_write_dirty_buffers_async(struct dm_bufio_client *c); - -/* - * Write all dirty buffers. Guarantees that all dirty buffers created prior - * to this call are on disk when this call exits. - */ -int dm_bufio_write_dirty_buffers(struct dm_bufio_client *c); - -/* - * Send an empty write barrier to the device to flush hardware disk cache. - */ -int dm_bufio_issue_flush(struct dm_bufio_client *c); - -/* - * Like dm_bufio_release but also move the buffer to the new - * block. dm_bufio_write_dirty_buffers is needed to commit the new block. - */ -void dm_bufio_release_move(struct dm_buffer *b, sector_t new_block); - -/* - * Free the given buffer. - * This is just a hint, if the buffer is in use or dirty, this function - * does nothing. - */ -void dm_bufio_forget(struct dm_bufio_client *c, sector_t block); - -/* - * Set the minimum number of buffers before cleanup happens. - */ -void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n); - -unsigned dm_bufio_get_block_size(struct dm_bufio_client *c); -sector_t dm_bufio_get_device_size(struct dm_bufio_client *c); -sector_t dm_bufio_get_block_number(struct dm_buffer *b); -void *dm_bufio_get_block_data(struct dm_buffer *b); -void *dm_bufio_get_aux_data(struct dm_buffer *b); -struct dm_bufio_client *dm_bufio_get_client(struct dm_buffer *b); - -/*----------------------------------------------------------------*/ - -#endif diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 6c81b11d0521..77d9fe58dae2 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -18,7 +18,7 @@ #include <crypto/hash.h> #include <crypto/skcipher.h> #include <linux/async_tx.h> -#include "dm-bufio.h" +#include <linux/dm-bufio.h> #define DM_MSG_PREFIX "integrity" diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index c5534d294773..3c50c4e4da8f 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -14,7 +14,7 @@ #include <linux/export.h> #include <linux/slab.h> #include <linux/dm-io.h> -#include "dm-bufio.h" +#include <linux/dm-bufio.h> #define DM_MSG_PREFIX "persistent snapshot" #define DM_CHUNK_SIZE_DEFAULT_SECTORS 32 /* 16KB */ diff --git a/drivers/md/dm-verity.h b/drivers/md/dm-verity.h index b675bc015512..69f9a298f8c9 100644 --- a/drivers/md/dm-verity.h +++ b/drivers/md/dm-verity.h @@ -12,7 +12,7 @@ #ifndef DM_VERITY_H #define DM_VERITY_H -#include "dm-bufio.h" +#include <linux/dm-bufio.h> #include <linux/device-mapper.h> #include <crypto/hash.h> diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c index ea15d220ced7..492a3f8ac119 100644 --- a/drivers/md/persistent-data/dm-block-manager.c +++ b/drivers/md/persistent-data/dm-block-manager.c @@ -5,8 +5,8 @@ */ #include "dm-block-manager.h" #include "dm-persistent-data-internal.h" -#include "../dm-bufio.h" +#include <linux/dm-bufio.h> #include <linux/crc32c.h> #include <linux/module.h> #include <linux/slab.h> |