jbd2: Account descriptor blocks into t_outstanding_credits

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Currently, journal descriptor blocks were not accounted in
transaction->t_outstanding_credits and we were just leaving some slack
space in the journal for them (in jbd2_log_space_left() and
jbd2_space_needed()). This is making proper accounting (and reservation
we want to add) of descriptor blocks difficult so switch to accounting
descriptor blocks in transaction->t_outstanding_credits and just reserve
the same amount of credits in t_outstanding credits for journal
descriptor blocks when creating transaction.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191105164437.32602-18-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Jan Kara 2019-11-05 17:44:24 +01:00 • committed by Theodore Ts'o

parent ec8b6f600e

commit 9f356e5a4f

4 changed files with 24 additions and 25 deletions

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include/linux/jbd2.h

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