diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 8 | ||||
| -rw-r--r-- | fs/f2fs/checkpoint.c | 2 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 3 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 1 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 2 |
5 files changed, 15 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index c39a85e84b6b..648ddd0d59f6 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -939,3 +939,11 @@ Description: Controls write priority in multi-devices setups. A value of 0 means allocate_section_policy = 1 Prioritize writing to section before allocate_section_hint allocate_section_policy = 2 Prioritize writing to section after allocate_section_hint =========================== ========================================================== + +What: /sys/fs/f2fs/<disk>/max_lock_elapsed_time +Date: December 2025 +Contact: "Chao Yu" <chao@kernel.org> +Description: This is a threshold, once a thread enters critical region that lock covers, total + elapsed time exceeds this threshold, f2fs will print tracepoint to dump information + of related context. This sysfs entry can be used to control the value of threshold, + by default, the value is 500 ms. diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index bc6058a3122b..61bcf227d8ca 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -66,7 +66,7 @@ static inline void trace_lock_elapsed_time_end(struct f2fs_rwsem *sem, get_lock_elapsed_time(&tts); total_time = div_u64(tts.total_time - lc->ts.total_time, npm); - if (total_time <= MAX_LOCK_ELAPSED_TIME) + if (total_time <= sem->sbi->max_lock_elapsed_time) return; #ifdef CONFIG_64BIT diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index fc3f532972ed..7f2675ed7f86 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1951,6 +1951,9 @@ struct f2fs_sb_info { /* carve out reserved_blocks from total blocks */ bool carve_out; + /* max elapsed time threshold in critical region that lock covered */ + unsigned long long max_lock_elapsed_time; + #ifdef CONFIG_F2FS_FS_COMPRESSION struct kmem_cache *page_array_slab; /* page array entry */ unsigned int page_array_slab_size; /* default page array slab size */ diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 036ba9cc799c..8fe1ac8a609c 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4295,6 +4295,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi) sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; spin_lock_init(&sbi->gc_remaining_trials_lock); atomic64_set(&sbi->current_atomic_write, 0); + sbi->max_lock_elapsed_time = MAX_LOCK_ELAPSED_TIME; sbi->dir_level = DEF_DIR_LEVEL; sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index c42f4f979d13..e03cba5a9d70 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -1219,6 +1219,7 @@ F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy); F2FS_SBI_GENERAL_RW_ATTR(carve_out); F2FS_SBI_GENERAL_RW_ATTR(reserved_pin_section); F2FS_SBI_GENERAL_RW_ATTR(bggc_io_aware); +F2FS_SBI_GENERAL_RW_ATTR(max_lock_elapsed_time); /* STAT_INFO ATTR */ #ifdef CONFIG_F2FS_STAT_FS @@ -1422,6 +1423,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(reserved_pin_section), ATTR_LIST(allocate_section_hint), ATTR_LIST(allocate_section_policy), + ATTR_LIST(max_lock_elapsed_time), NULL, }; ATTRIBUTE_GROUPS(f2fs); |