diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2020-11-05 18:45:09 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-12-08 17:54:05 +0300 |
| commit | bfb484d922a317183d77b3b6db77a2ff659384cc (patch) | |
| tree | e8394756531ed97ec449b270c65f16a4f0fb5e59 /fs/btrfs/extent_io.h | |
| parent | 416e3445ef8087ff28792f366af9726cc225fb0c (diff) | |
| download | linux-bfb484d922a317183d77b3b6db77a2ff659384cc.tar.xz | |
btrfs: cleanup extent buffer readahead
We're going to pass around more information when we allocate extent
buffers, in order to make that cleaner how we do readahead. Most of the
callers have the parent node that we're getting our blockptr from, with
the sole exception of relocation which simply has the bytenr it wants to
read.
Add a helper that takes the current arguments that we need (bytenr and
gen), and add another helper for simply reading the slot out of a node.
In followup patches the helper that takes all the extra arguments will
be expanded, and the simpler helper won't need to have it's arguments
adjusted.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 3c2bf21c54eb..a211e90292f8 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -198,6 +198,9 @@ void free_extent_buffer_stale(struct extent_buffer *eb); int read_extent_buffer_pages(struct extent_buffer *eb, int wait, int mirror_num); void wait_on_extent_buffer_writeback(struct extent_buffer *eb); +void btrfs_readahead_tree_block(struct btrfs_fs_info *fs_info, + u64 bytenr, u64 gen); +void btrfs_readahead_node_child(struct extent_buffer *node, int slot); static inline int num_extent_pages(const struct extent_buffer *eb) { |