git: HAMMER VFS - REDO implementation base code part 3/many
commit 73896937a65b2ad6b84128ce92d0b0d748cb4a14
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Mon Jan 11 20:46:08 2010 -0800
HAMMER VFS - REDO implementation base code part 3/many
* Track the oldest potentially uncommitted UNDO/REDO FIFO offset
on an inode-by-inode basis and use a red-black tree to find
the aggregate oldest offset.
* If REDOs are present generate a REDO SYNC entry in the UNDO/REDO FIFO
within the recovery span which indicates to the recovery code how
far out of the span it must go to process REDOs.
* Fix a bug in hammer_generate_redo() where the REDO would not be
generated if the data length was 0 (SYNC records use a data length
of 0 as a degenerate case).
* Print the REDO SYNC entries on the console if bit 2 is set in
vfs.hammer.debug_io (0x04).
* NOTE: The recovery code does not yet process REDOs.
Summary of changes:
sys/vfs/hammer/hammer.h | 21 +++++++++
sys/vfs/hammer/hammer_inode.c | 19 ++++++++-
sys/vfs/hammer/hammer_redo.c | 95 +++++++++++++++++++++++++++++++++++++---
sys/vfs/hammer/hammer_vfsops.c | 1 +
4 files changed, 128 insertions(+), 8 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/73896937a65b2ad6b84128ce92d0b0d748cb4a14
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