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Commit 6af49dbd authored by David Sterba's avatar David Sterba
Browse files

btrfs: sink get_extent parameter to read_extent_buffer_pages 



All callers pass btree_get_extent, which needs to be exported.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 4ef77695

fs/btrfs/disk-io.c

+4 −4
Original line number Diff line number Diff line
@@ -220,7 +220,7 @@ void btrfs_set_buffer_lockdep_class(u64 objectid, struct extent_buffer *eb, 
 * extents on the btree inode are pretty simple, there's one extent

 * that covers the entire device

 */

static struct extent_map *btree_get_extent(struct btrfs_inode *inode,

struct extent_map *btree_get_extent(struct btrfs_inode *inode,

		struct page *page, size_t pg_offset, u64 start, u64 len,

		int create)

{
@@ -455,7 +455,7 @@ static int btree_read_extent_buffer_pages(struct btrfs_fs_info *fs_info, 
	io_tree = &BTRFS_I(fs_info->btree_inode)->io_tree;

	while (1) {

		ret = read_extent_buffer_pages(io_tree, eb, WAIT_COMPLETE,

					       btree_get_extent, mirror_num);

					       mirror_num);

		if (!ret) {

			if (!verify_parent_transid(io_tree, eb,

						   parent_transid, 0))
@@ -1012,7 +1012,7 @@ void readahead_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr) 
	if (IS_ERR(buf))

		return;

	read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree,

				 buf, WAIT_NONE, btree_get_extent, 0);

				 buf, WAIT_NONE, 0);

	free_extent_buffer(buf);

}
@@ -1031,7 +1031,7 @@ int reada_tree_block_flagged(struct btrfs_fs_info *fs_info, u64 bytenr, 
	set_bit(EXTENT_BUFFER_READAHEAD, &buf->bflags);



	ret = read_extent_buffer_pages(io_tree, buf, WAIT_PAGE_LOCK,

				       btree_get_extent, mirror_num);

				       mirror_num);

	if (ret) {

		free_extent_buffer(buf);

		return ret;

fs/btrfs/disk-io.h

+3 −0
Original line number Diff line number Diff line
@@ -149,6 +149,9 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, 
				     u64 objectid);

int btree_lock_page_hook(struct page *page, void *data,

				void (*flush_fn)(void *));

struct extent_map *btree_get_extent(struct btrfs_inode *inode,

		struct page *page, size_t pg_offset, u64 start, u64 len,

		int create);

int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags);

int __init btrfs_end_io_wq_init(void);

void btrfs_end_io_wq_exit(void);

fs/btrfs/extent_io.c

+3 −3
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include "locking.h"

#include "rcu-string.h"

#include "backref.h"

#include "disk-io.h"



static struct kmem_cache *extent_state_cache;

static struct kmem_cache *extent_buffer_cache;
@@ -5248,8 +5249,7 @@ int extent_buffer_uptodate(struct extent_buffer *eb) 
}



int read_extent_buffer_pages(struct extent_io_tree *tree,

			     struct extent_buffer *eb, int wait,

			     get_extent_t *get_extent, int mirror_num)

			     struct extent_buffer *eb, int wait, int mirror_num)

{

	unsigned long i;

	struct page *page;
@@ -5309,7 +5309,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, 


			ClearPageError(page);

			err = __extent_read_full_page(tree, page,

						      get_extent, &bio,

						      btree_get_extent, &bio,

						      mirror_num, &bio_flags,

						      REQ_META);

			if (err) {

fs/btrfs/extent_io.h

+1 −1
Original line number Diff line number Diff line
@@ -435,7 +435,7 @@ void free_extent_buffer_stale(struct extent_buffer *eb); 
#define WAIT_PAGE_LOCK	2

int read_extent_buffer_pages(struct extent_io_tree *tree,

			     struct extent_buffer *eb, int wait,

			     get_extent_t *get_extent, int mirror_num);

			     int mirror_num);

void wait_on_extent_buffer_writeback(struct extent_buffer *eb);



static inline unsigned long num_extent_pages(u64 start, u64 len)