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jbd2: add fast commit machinery

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This functions adds necessary APIs needed in JBD2 layer for fast
commits.

Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201015203802.3597742-5-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Harshad Shirwadkar 2020-10-15 13:37:56 -07:00 • committed by Theodore Ts'o
parent 6866d7b3f2
commit ff780b91ef
4 changed files with 268 additions and 1 deletions
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8
fs/ext4/fast_commit.c
View file

@ -8,11 +8,19 @@
* Ext4 fast commits routines.
*/
#include "ext4_jbd2.h"
/*
* Fast commit cleanup routine. This is called after every fast commit and
* full commit. full is true if we are called after a full commit.
*/
static void ext4_fc_cleanup(journal_t *journal, int full)
{
}
void ext4_fc_init(struct super_block *sb, journal_t *journal)
{
if (!test_opt2(sb, JOURNAL_FAST_COMMIT))
return;
journal->j_fc_cleanup_callback = ext4_fc_cleanup;
if (jbd2_fc_init(journal, EXT4_NUM_FC_BLKS)) {
pr_warn("Error while enabling fast commits, turning off.");
ext4_clear_feature_fast_commit(sb);