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/openbmc/linux/include/linux/
H A Djbd2.hdiff b81c3758c1df0c308ba8b28934fcd63d9dba9c41 Mon Jun 24 12:01:18 CDT 2024 Jan Kara <jack@suse.cz> jbd2: precompute number of transaction descriptor blocks

commit e3a00a23781c1f2fcda98a7aecaac515558e7a35 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
/openbmc/linux/fs/jbd2/
H A Dtransaction.cdiff b81c3758c1df0c308ba8b28934fcd63d9dba9c41 Mon Jun 24 12:01:18 CDT 2024 Jan Kara <jack@suse.cz> jbd2: precompute number of transaction descriptor blocks

commit e3a00a23781c1f2fcda98a7aecaac515558e7a35 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H A Djournal.cdiff b81c3758c1df0c308ba8b28934fcd63d9dba9c41 Mon Jun 24 12:01:18 CDT 2024 Jan Kara <jack@suse.cz> jbd2: precompute number of transaction descriptor blocks

commit e3a00a23781c1f2fcda98a7aecaac515558e7a35 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>