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(parent: 7414a03) | patch
btrfs: hooks for readahead
authorArne Jansen <sensille@gmx.net>
Fri, 10 Jun 2011 11:55:54 +0000 (13:55 +0200)
committerArne Jansen <sensille@gmx.net>
Sun, 2 Oct 2011 06:48:44 +0000 (08:48 +0200)
commit4bb31e928d1a47f5bd046ecb176b8eff7c589fc0
tree61693e91f7a179b75cc43f5bcb504d50a342ecb7tree | snapshot (tar.gz zip)
parent7414a03fbf9e75fbbf2a3c16828cd862e572aa44commit | 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>
fs/btrfs/disk-io.c diff | blob | blame | history
fs/btrfs/extent_io.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)