btrfs: remove redundant parameter from btree_readahead_hook

We can read fs_info from eb.

Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 285566c..7343bf7 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3672,8 +3672,7 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root,
                              struct btrfs_key *start, struct btrfs_key *end);
 int btrfs_reada_wait(void *handle);
 void btrfs_reada_detach(void *handle);
-int btree_readahead_hook(struct btrfs_fs_info *fs_info,
-                        struct extent_buffer *eb, int err);
+int btree_readahead_hook(struct extent_buffer *eb, int err);
 
 static inline int is_fstree(u64 rootid)
 {

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 12eba54..a9314fe 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -762,7 +762,7 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
 err:
        if (reads_done &&
            test_and_clear_bit(EXTENT_BUFFER_READAHEAD, &eb->bflags))
-               btree_readahead_hook(fs_info, eb, ret);
+               btree_readahead_hook(eb, ret);
 
        if (ret) {
                /*
@@ -787,7 +787,7 @@ static int btree_io_failed_hook(struct page *page, int failed_mirror)
        eb->read_mirror = failed_mirror;
        atomic_dec(&eb->io_pages);
        if (test_and_clear_bit(EXTENT_BUFFER_READAHEAD, &eb->bflags))
-               btree_readahead_hook(eb->fs_info, eb, -EIO);
+               btree_readahead_hook(eb, -EIO);
        return -EIO;    /* we fixed nothing */
 }
 

diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index a7fa4a5..306e510 100644 (file)
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -209,9 +209,9 @@ cleanup:
        return;
 }
 
-int btree_readahead_hook(struct btrfs_fs_info *fs_info,
-                        struct extent_buffer *eb, int err)
+int btree_readahead_hook(struct extent_buffer *eb, int err)
 {
+       struct btrfs_fs_info *fs_info = eb->fs_info;
        int ret = 0;
        struct reada_extent *re;