pm24.git/fs/f2fs/debug.c, branch v6.4

f2fs: fix to recover quota data correctly

2023-04-13T03:00:36Z

With -O quota mkfs option, xfstests generic/417 fails due to fsck detects data corruption on quota inodes. [ASSERT] (fsck_chk_quota_files:2051) --> Quota file is missing or invalid quota file content found. The root cause is there is a hole f2fs doesn't hold quota inodes, so all recovered quota data will be dropped due to SBI_POR_DOING flag was set. - f2fs_fill_super - f2fs_recover_orphan_inodes - f2fs_enable_quota_files - f2fs_quota_off_umount <--- quota inodes were dropped ---> - f2fs_recover_fsync_data - f2fs_enable_quota_files - f2fs_quota_off_umount This patch tries to eliminate the hole by holding quota inodes during entire recovery flow as below: - f2fs_fill_super - f2fs_recover_quota_begin - f2fs_recover_orphan_inodes - f2fs_recover_fsync_data - f2fs_recover_quota_end Then, recovered quota data can be persisted after SBI_POR_DOING is cleared. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: convert to MAX_SBI_FLAG instead of 32 in stat_show()

2023-03-29T22:17:39Z

BIW reduce the s_flag array size and make s_flag constant. Signed-off-by: Yangtao Li Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: replace si->sbi w/ sbi in stat_show()

2023-02-14T18:07:55Z

For each loop add a local f2fs_sb_info pointer insted of looking it up. Signed-off-by: Yangtao Li Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: export ipu policy in debugfs

2023-02-14T18:07:45Z

Export ipu_policy as a string in debugfs for better readability and it can help us better understand some strategies of the file system. Signed-off-by: Yangtao Li Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: fix some format WARNING in debug.c and sysfs.c

2022-12-12T22:59:39Z

To fix: WARNING: function definition argument 'struct f2fs_attr *' should also have an identifier name + ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); WARNING: return sysfs_emit(...) formats should include a terminating newline + return sysfs_emit(buf, "(none)"); WARNING: Prefer 'unsigned int' to bare use of 'unsigned' + unsigned npages = NODE_MAPPING(sbi)->nrpages; WARNING: Missing a blank line after declarations + unsigned npages = COMPRESS_MAPPING(sbi)->nrpages; + si->page_mem += (unsigned long long)npages << PAGE_SHIFT; WARNING: quoted string split across lines + seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, " + "Cur time: %4d(ms), Peak time: %4d(ms))\n", Signed-off-by: Yangtao Li Signed-off-by: Jaegeuk Kim

f2fs: add block_age-based extent cache

2022-12-12T22:53:56Z

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: refactor extent_cache to support for read and more

2022-12-12T22:53:56Z

This patch prepares extent_cache to be ready for addition. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: change to use atomic_t type form sbi.atomic_files

2022-10-07T19:57:26Z

inode_lock[ATOMIC_FILE] was used for protecting sbi->atomic_files, update atomic_files variable's type to atomic_t instead of unsigned int, then inode_lock[ATOMIC_FILE] can be obsoleted. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: account swapfile inodes

2022-10-07T19:56:45Z

In order to check count of opened swapfile inodes. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: code clean and fix a type error

2022-10-04T20:31:44Z

ERROR: code indent should use tabs where possible ERROR: spaces required around that ':' ERROR: incorrect tab Found serveral code type errors when review the code and fix it. There is no function change. Signed-off-by: Zhang Qilong Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim