jbd2: precompute number of transaction descriptor blocks

Browse source

Instead of computing the number of descriptor blocks a transaction can
have each time we need it (which is currently when starting each
transaction but will become more frequent later) precompute the number
once during journal initialization together with maximum transaction
size. We perform the precomputation whenever journal feature set is
updated similarly as for computation of
journal->j_revoke_records_per_block.

CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20240624170127.3253-2-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

...

This commit is contained in:

Jan Kara 2024-06-24 19:01:18 +02:00 • committed by Theodore Ts'o

parent 4aa99c71e4

commit e3a00a2378

3 changed files with 54 additions and 38 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

61

fs/jbd2/journal.c

View file

24

fs/jbd2/transaction.c

View file

7

include/linux/jbd2.h

View file