| commit | 4bb31e928d1a47f5bd046ecb176b8eff7c589fc0 | [log] [tgz] |
|---|---|---|
| author | Arne Jansen <sensille@gmx.net> | Fri Jun 10 13:55:54 2011 +0200 |
| committer | Arne Jansen <sensille@gmx.net> | Sun Oct 02 08:48:44 2011 +0200 |
| tree | 61693e91f7a179b75cc43f5bcb504d50a342ecb7 | |
| parent | 7414a03fbf9e75fbbf2a3c16828cd862e572aa44 [diff] |
btrfs: hooks for readahead This adds the hooks needed for readahead. In the readpage_end_io_hook, the extent state is checked for the EXTENT_READAHEAD flag. Only in this case the readahead hook is called, to keep the impact on non-ra as low as possible. Additionally, a hook for a failed IO is added, otherwise readahead would wait indefinitely for the extent to finish. Changes for v2: - eliminate race condition Signed-off-by: Arne Jansen <sensille@gmx.net>