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Diffstat (limited to 'fs/btrfs/extent_io.h')
-rw-r--r--fs/btrfs/extent_io.h43
1 files changed, 33 insertions, 10 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 2c9d6570b0..e3530d427e 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -7,11 +7,32 @@
#include <linux/refcount.h>
#include <linux/fiemap.h>
#include <linux/btrfs_tree.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
+#include <linux/rwsem.h>
+#include <linux/list.h>
+#include <linux/slab.h>
#include "compression.h"
+#include "messages.h"
#include "ulist.h"
#include "misc.h"
+struct page;
+struct file;
+struct folio;
+struct inode;
+struct fiemap_extent_info;
+struct readahead_control;
+struct address_space;
+struct writeback_control;
+struct extent_io_tree;
+struct extent_map_tree;
+struct btrfs_block_group;
+struct btrfs_fs_info;
+struct btrfs_inode;
+struct btrfs_root;
struct btrfs_trans_handle;
+struct btrfs_tree_parent_check;
enum {
EXTENT_BUFFER_UPTODATE,
@@ -63,11 +84,6 @@ enum {
#define BITMAP_LAST_BYTE_MASK(nbits) \
(BYTE_MASK >> (-(nbits) & (BITS_PER_BYTE - 1)))
-struct btrfs_root;
-struct btrfs_inode;
-struct btrfs_fs_info;
-struct extent_io_tree;
-struct btrfs_tree_parent_check;
int __init extent_buffer_init_cachep(void);
void __cold extent_buffer_free_cachep(void);
@@ -75,7 +91,8 @@ void __cold extent_buffer_free_cachep(void);
#define INLINE_EXTENT_BUFFER_PAGES (BTRFS_MAX_METADATA_BLOCKSIZE / PAGE_SIZE)
struct extent_buffer {
u64 start;
- unsigned long len;
+ u32 len;
+ u32 folio_size;
unsigned long bflags;
struct btrfs_fs_info *fs_info;
@@ -90,6 +107,7 @@ struct extent_buffer {
int read_mirror;
/* >= 0 if eb belongs to a log tree, -1 otherwise */
s8 log_index;
+ u8 folio_shift;
struct rcu_head rcu_head;
struct rw_semaphore lock;
@@ -113,6 +131,13 @@ struct btrfs_eb_write_context {
struct btrfs_block_group *zoned_bg;
};
+static inline unsigned long offset_in_eb_folio(const struct extent_buffer *eb,
+ u64 start)
+{
+ ASSERT(eb->folio_size);
+ return start & (eb->folio_size - 1);
+}
+
/*
* Get the correct offset inside the page of extent buffer.
*
@@ -151,13 +176,13 @@ static inline unsigned long get_eb_folio_index(const struct extent_buffer *eb,
* the folio_shift would be large enough to always make us
* return 0 as index.
* 1.2) Several page sized folios
- * The folio_shift() would be PAGE_SHIFT, giving us the correct
+ * The folio_shift would be PAGE_SHIFT, giving us the correct
* index.
*
* 2) sectorsize < PAGE_SIZE and nodesize < PAGE_SIZE case
* The folio would only be page sized, and always give us 0 as index.
*/
- return offset >> folio_shift(eb->folios[0]);
+ return offset >> eb->folio_shift;
}
/*
@@ -205,8 +230,6 @@ static inline void extent_changeset_free(struct extent_changeset *changeset)
kfree(changeset);
}
-struct extent_map_tree;
-
int try_release_extent_mapping(struct page *page, gfp_t mask);
int try_release_extent_buffer(struct page *page);