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| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2020-11-05 19:58:55 -0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-11-06 23:01:03 -0500 |
| commit | a1e5e465b31d6015fccb359d99053b39e5180466 (patch) | |
| tree | 2f996837b5e750345915bc37e0433508a1e21a78 /fs/ext4/fast_commit.h | |
| parent | ede7dc7fa0af619afc08995776eadb9ff3b0a711 (diff) | |
ext4: clean up the JBD2 API that initializes fast commits
This patch removes jbd2_fc_init() API and its related functions to
simplify enabling fast commits. With this change, the number of fast
commit blocks to use is solely determined by the JBD2 layer. So, we
move the default value for minimum number of fast commit blocks from
ext4/fast_commit.h to include/linux/jbd2.h. However, whether or not to
use fast commits is determined by the file system. The file system
just sets the fast commit feature using
jbd2_journal_set_features(). JBD2 layer then determines how many
blocks to use for fast commits (based on the value found in the JBD2
superblock).
Note that the JBD2 feature flag of fast commits is just an indication
that there are fast commit blocks present on disk. It doesn't tell
JBD2 layer about the intent of the file system of whether to it wants
to use fast commit or not. That's why, we blindly clear the fast
commit flag in journal_reset() after the recovery is done.
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201106035911.1942128-7-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/fast_commit.h')
| -rw-r--r-- | fs/ext4/fast_commit.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/ext4/fast_commit.h b/fs/ext4/fast_commit.h index 140fbb6af19e..1d96e0ac8138 100644 --- a/fs/ext4/fast_commit.h +++ b/fs/ext4/fast_commit.h @@ -3,9 +3,6 @@ #ifndef __FAST_COMMIT_H__ #define __FAST_COMMIT_H__ -/* Number of blocks in journal area to allocate for fast commits */ -#define EXT4_NUM_FC_BLKS 256 - /* Fast commit tags */ #define EXT4_FC_TAG_ADD_RANGE 0x0001 #define EXT4_FC_TAG_DEL_RANGE 0x0002 |