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| author | Amir Goldstein <amir73il@gmail.com> | 2011-03-20 21:13:43 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-03-20 21:13:43 -0400 |
| commit | 93737456d68ddcb86232f669b83da673dd12e351 (patch) | |
| tree | 564feaa33d36c5e06ad200c5225382ff0afd5249 /include/linux/writeback.h | |
| parent | c2cc7028e41c76e44b6e247c4b495c7523b23c87 (diff) | |
jbd2: add COW fields to struct jbd2_journal_handle
Add fields needed for the copy-on-write ext4 development work.
The h_cowing flag is used by ext4 snapshots code to mark the task in
COWING state.
The h_XXX_credits fields are used to track buffer credits usage
(accounted by COW and non-COW operations).
The h_cow_XXX fields are used as per task debugging counters.
Merging this commit into mainline will allow users to test ext4
snapshots as a standalone module, without the need to patch and
install a development kernel.
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/writeback.h')
0 files changed, 0 insertions, 0 deletions