diff options
| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2025-05-08 17:59:06 +0000 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2025-05-08 21:56:17 -0400 |
| commit | 86e07d4b9b0497afef78af773c74258c8f63030f (patch) | |
| tree | 726d0660d4607067a01fe70f1c0c459a4eaa9370 /fs/ext4/ext4.h | |
| parent | 69f35ca189300ddba29a16214159beef45bbd984 (diff) | |
ext4: temporarily elevate commit thread priority
Unlike JBD2 based full commits, there is no dedicated journal thread
for fast commits. Thus to reduce scheduling delays between IO
submission and completion, temporarily elevate the committer thread's
priority to match the configured priority of the JBD2 journal
thread.
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250508175908.1004880-8-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 0cb34a06ee4c..3987c5bf2ff9 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2296,10 +2296,12 @@ static inline int ext4_emergency_state(struct super_block *sb) #define EXT4_DEFM_NODELALLOC 0x0800 /* - * Default journal batch times + * Default journal batch times and ioprio. */ #define EXT4_DEF_MIN_BATCH_TIME 0 #define EXT4_DEF_MAX_BATCH_TIME 15000 /* 15ms */ +#define EXT4_DEF_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3)) + /* * Default values for superblock update |