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authorJan Kara <jack@suse.cz>2019-11-05 17:44:24 +0100
committerTheodore Ts'o <tytso@mit.edu>2019-11-05 16:00:48 -0500
commit9f356e5a4f12008fa0df8b6385fc0ab830416e72 (patch)
tree6ec4a24cc440123cd810bf520c609d01abe0ebd3 /fs/jbd2/journal.c
parentec8b6f600e49dc87a8564807fec4193bf93ee2b5 (diff)
jbd2: Account descriptor blocks into t_outstanding_credits
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>
Diffstat (limited to 'fs/jbd2/journal.c')
-rw-r--r--fs/jbd2/journal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index cc11097f1176..22b14b3ca197 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -840,6 +840,7 @@ jbd2_journal_get_descriptor_buffer(transaction_t *transaction, int type)
bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
if (!bh)
return NULL;
+ atomic_dec(&transaction->t_outstanding_credits);
lock_buffer(bh);
memset(bh->b_data, 0, journal->j_blocksize);
header = (journal_header_t *)bh->b_data;