kernel/linux.git/fs/f2fs/super.c, branch v6.2

f2fs: don't call f2fs_issue_discard_timeout() when discard_cmd_cnt is 0 in f2fs_put_super()

2022-12-12T22:59:38+00:00

No need to call f2fs_issue_discard_timeout() in f2fs_put_super, when no discard command requires issue. Since the caller of f2fs_issue_discard_timeout() usually judges the number of discard commands before using it. Let's move this logic to f2fs_issue_discard_timeout(). By the way, use f2fs_realtime_discard_enable to simplify the code. Reported-by: kernel test robot Signed-off-by: Yangtao Li Signed-off-by: Jaegeuk Kim

f2fs: Fix spelling mistake in label: free_bio_enrty_cache -> free_bio_entry_cache

2022-12-12T22:59:32+00:00

There is a spelling mistake in a label name. Fix it. Signed-off-by: Colin Ian King Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add block_age-based extent cache

2022-12-12T22:53:56+00:00

This patch introduces a runtime hot/cold data separation method for f2fs, in order to improve the accuracy for data temperature classification, reduce the garbage collection overhead after long-term data updates. Enhanced hot/cold data separation can record data block update frequency as "age" of the extent per inode, and take use of the age info to indicate better temperature type for data block allocation: - It records total data blocks allocated since mount; - When file extent has been updated, it calculate the count of data blocks allocated since last update as the age of the extent; - Before the data block allocated, it searches for the age info and chooses the suitable segment for allocation. Test and result: - Prepare: create about 30000 files * 3% for cold files (with cold file extension like .apk, from 3M to 10M) * 50% for warm files (with random file extension like .FcDxq, from 1K to 4M) * 47% for hot files (with hot file extension like .db, from 1K to 256K) - create(5%)/random update(90%)/delete(5%) the files * total write amount is about 70G * fsync will be called for .db files, and buffered write will be used for other files The storage of test device is large enough(128G) so that it will not switch to SSR mode during the test. Benefit: dirty segment count increment reduce about 14% - before: Dirty +21110 - after: Dirty +18286 Signed-off-by: qixiaoyu1 Signed-off-by: xiongping1 Signed-off-by: Jaegeuk Kim

f2fs: specify extent cache for read explicitly

2022-12-12T22:53:55+00:00

Let's descrbie it's read extent cache. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: introduce f2fs_is_readonly() for readability

2022-12-12T22:53:48+00:00

Introduce f2fs_is_readonly() and use it to simplify code. Signed-off-by: Yangtao Li Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: do some cleanup for f2fs module init

2022-12-08T17:32:20+00:00

Just for cleanup, no functional changes. Signed-off-by: Yangtao Li Signed-off-by: Jaegeuk Kim

f2fs: define MIN_DISCARD_GRANULARITY macro

2022-11-28T20:50:58+00:00

Do cleanup in f2fs_tuning_parameters() and __init_discard_policy(), let's use macro instead of number. Suggested-by: Chao Yu Signed-off-by: Yangtao Li Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: change type for 'sbi->readdir_ra'

2022-11-28T20:46:33+00:00

Before this patch, the varibale 'readdir_ra' takes effect if it's equal to '1' or not, so we can change type for it from 'int' to 'bool'. Signed-off-by: Yuwei Guan Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: cleanup for 'f2fs_tuning_parameters' function

2022-11-28T20:46:33+00:00

A cleanup patch for 'f2fs_tuning_parameters' function. Signed-off-by: Yuwei Guan Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: fix to alloc_mode changed after remount on a small volume device

2022-11-28T20:46:33+00:00

The commit 84b89e5d943d8 ("f2fs: add auto tuning for small devices") add tuning for small volume device, now support to tune alloce_mode to 'reuse' if it's small size. But the alloc_mode will change to 'default' when do remount on this small size dievce. This patch fo fix alloc_mode changed when do remount for a small volume device. Signed-off-by: Yuwei Guan Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim