diff options
Diffstat (limited to 'include/linux/dm-bufio.h')
| -rw-r--r-- | include/linux/dm-bufio.h | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/include/linux/dm-bufio.h b/include/linux/dm-bufio.h index 29d255fdd5d6..d1503b815a78 100644 --- a/include/linux/dm-bufio.h +++ b/include/linux/dm-bufio.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2009-2011 Red Hat, Inc. * @@ -18,19 +19,27 @@ struct dm_bufio_client; struct dm_buffer; /* + * Flags for dm_bufio_client_create + */ +#define DM_BUFIO_CLIENT_NO_SLEEP 0x1 + +/* * 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, +dm_bufio_client_create(struct block_device *bdev, unsigned int block_size, + unsigned int reserved_buffers, unsigned int aux_size, void (*alloc_callback)(struct dm_buffer *), - void (*write_callback)(struct dm_buffer *)); + void (*write_callback)(struct dm_buffer *), + unsigned int flags); /* * Release a buffered IO cache. */ void dm_bufio_client_destroy(struct dm_bufio_client *c); +void dm_bufio_client_reset(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 @@ -55,6 +64,9 @@ void dm_bufio_set_sector_offset(struct dm_bufio_client *c, sector_t start); void *dm_bufio_read(struct dm_bufio_client *c, sector_t block, struct dm_buffer **bp); +void *dm_bufio_read_with_ioprio(struct dm_bufio_client *c, sector_t block, + struct dm_buffer **bp, unsigned short ioprio); + /* * Like dm_bufio_read, but return buffer from cache, don't read * it. If the buffer is not in the cache, return NULL. @@ -75,7 +87,11 @@ void *dm_bufio_new(struct dm_bufio_client *c, sector_t block, * I/O to finish. */ void dm_bufio_prefetch(struct dm_bufio_client *c, - sector_t block, unsigned n_blocks); + sector_t block, unsigned int n_blocks); + +void dm_bufio_prefetch_with_ioprio(struct dm_bufio_client *c, + sector_t block, unsigned int n_blocks, + unsigned short ioprio); /* * Release a reference obtained with dm_bufio_{read,get,new}. The data @@ -100,7 +116,7 @@ void dm_bufio_mark_buffer_dirty(struct dm_buffer *b); * 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); + unsigned int start, unsigned int end); /* * Initiate writing of dirty buffers, without waiting for completion. @@ -124,12 +140,6 @@ int dm_bufio_issue_flush(struct dm_bufio_client *c); int dm_bufio_issue_discard(struct dm_bufio_client *c, sector_t block, sector_t count); /* - * 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. @@ -146,10 +156,11 @@ void dm_bufio_forget_buffers(struct dm_bufio_client *c, sector_t block, sector_t /* * Set the minimum number of buffers before cleanup happens. */ -void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n); +void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned int n); -unsigned dm_bufio_get_block_size(struct dm_bufio_client *c); +unsigned int dm_bufio_get_block_size(struct dm_bufio_client *c); sector_t dm_bufio_get_device_size(struct dm_bufio_client *c); +struct dm_io_client *dm_bufio_get_dm_io_client(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); |