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authorHarshad Shirwadkar <harshadshirwadkar@gmail.com>2020-11-20 12:22:32 -0800
committerTheodore Ts'o <tytso@mit.edu>2020-12-17 13:30:45 -0500
commit9bd23c31f392bda88618008f27fd52ee9e0fac38 (patch)
treef49df76debd74e9dac011a19cc59e0668b5247c5 /fs/jbd2/journal.c
parent941ba122ca56756aad82db21d28f283ad33b8dee (diff)
jbd2: add a helper to find out number of fast commit blocks
Add a helper to read number of fast commit blocks from jbd2 superblock and also rename the JBD2_MIN_FC_BLKS to JBD2_DEFAULT_FAST_COMMIT_BLOCKS since this constant is just the default number of fast commit blocks to use in case number of fast commit blocks isn't set in jbd2 superblock. Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com> Link: https://lore.kernel.org/r/20201120202232.2240293-2-harshadshirwadkar@gmail.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/journal.c')
-rw-r--r--fs/jbd2/journal.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 188f79d76988..2dc944442802 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1869,9 +1869,7 @@ static int load_superblock(journal_t *journal)
if (jbd2_has_feature_fast_commit(journal)) {
journal->j_fc_last = be32_to_cpu(sb->s_maxlen);
- num_fc_blocks = be32_to_cpu(sb->s_num_fc_blks);
- if (!num_fc_blocks)
- num_fc_blocks = JBD2_MIN_FC_BLOCKS;
+ num_fc_blocks = jbd2_journal_get_num_fc_blks(sb);
if (journal->j_last - num_fc_blocks >= JBD2_MIN_JOURNAL_BLOCKS)
journal->j_last = journal->j_fc_last - num_fc_blocks;
journal->j_fc_first = journal->j_last + 1;
@@ -2102,9 +2100,7 @@ jbd2_journal_initialize_fast_commit(journal_t *journal)
journal_superblock_t *sb = journal->j_superblock;
unsigned long long num_fc_blks;
- num_fc_blks = be32_to_cpu(sb->s_num_fc_blks);
- if (num_fc_blks == 0)
- num_fc_blks = JBD2_MIN_FC_BLOCKS;
+ num_fc_blks = jbd2_journal_get_num_fc_blks(sb);
if (journal->j_last - num_fc_blks < JBD2_MIN_JOURNAL_BLOCKS)
return -ENOSPC;