btrfs: export wait_extent_bit

This is used by the subpage code in addition to lock_extent_bits, so
export it so we can move it out of extent_io.c

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h
index 16a9da4149f312c882db3aa7d18a51a44ed41df0..3b63aeca941a3c982864f547408533cdcaa8a2a2 100644 (file)
--- a/fs/btrfs/extent-io-tree.h
+++ b/fs/btrfs/extent-io-tree.h
@@ -253,6 +253,7 @@ int extent_invalidate_folio(struct extent_io_tree *tree,
 bool btrfs_find_delalloc_range(struct extent_io_tree *tree, u64 *start,
                               u64 *end, u64 max_bytes,
                               struct extent_state **cached_state);
+void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bits);
 
 /* This should be reworked in the future and put elsewhere. */
 void btrfs_free_io_failure_record(struct btrfs_inode *inode, u64 start,

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 3c578325bb6c800551e248abe357a706f71e1b47..70f511be3cce9630b2553771c701d1b44949ac2c 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -753,8 +753,7 @@ static void wait_on_state(struct extent_io_tree *tree,
  * The range [start, end] is inclusive.
  * The tree lock is taken by this function
  */
-static void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
-                           u32 bits)
+void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bits)
 {
        struct extent_state *state;
        struct rb_node *node;