diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 | ||||
| -rw-r--r-- | fs/f2fs/extent_cache.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 4 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 10 |
4 files changed, 24 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 513296bb6f29..3e1630c70d8a 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -822,3 +822,9 @@ Description: It controls the valid block ratio threshold not to trigger excessiv for zoned deivces. The initial value of it is 95(%). F2FS will stop the background GC thread from intiating GC for sections having valid blocks exceeding the ratio. + +What: /sys/fs/f2fs/<disk>/max_read_extent_count +Date: November 2024 +Contact: "Chao Yu" <chao@kernel.org> +Description: It controls max read extent count for per-inode, the value of threshold + is 10240 by default. diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c index 368d9cbdea74..fb09c8e9bc57 100644 --- a/fs/f2fs/extent_cache.c +++ b/fs/f2fs/extent_cache.c @@ -674,7 +674,9 @@ static void __update_extent_tree_range(struct inode *inode, } if (end < org_end && (type != EX_READ || - org_end - end >= F2FS_MIN_EXTENT_LEN)) { + (org_end - end >= F2FS_MIN_EXTENT_LEN && + atomic_read(&et->node_cnt) < + sbi->max_read_extent_count))) { if (parts) { __set_extent_info(&ei, end, org_end - end, @@ -1169,6 +1171,7 @@ void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi) sbi->hot_data_age_threshold = DEF_HOT_DATA_AGE_THRESHOLD; sbi->warm_data_age_threshold = DEF_WARM_DATA_AGE_THRESHOLD; sbi->last_age_weight = LAST_AGE_WEIGHT; + sbi->max_read_extent_count = DEF_MAX_READ_EXTENT_COUNT; } int __init f2fs_create_extent_cache(void) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 93a5e1c24e56..cec3dd205b3d 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -634,6 +634,9 @@ enum { #define DEF_HOT_DATA_AGE_THRESHOLD 262144 #define DEF_WARM_DATA_AGE_THRESHOLD 2621440 +/* default max read extent count per inode */ +#define DEF_MAX_READ_EXTENT_COUNT 10240 + /* extent cache type */ enum extent_type { EX_READ, @@ -1619,6 +1622,7 @@ struct f2fs_sb_info { /* for extent tree cache */ struct extent_tree_info extent_tree[NR_EXTENT_CACHES]; atomic64_t allocated_data_blocks; /* for block age extent_cache */ + unsigned int max_read_extent_count; /* max read extent count per inode */ /* The threshold used for hot and warm data seperation*/ unsigned int hot_data_age_threshold; diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index c56e8c873935..d9a44f03e558 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -789,6 +789,13 @@ out: return count; } + if (!strcmp(a->attr.name, "max_read_extent_count")) { + if (t > UINT_MAX) + return -EINVAL; + *ui = (unsigned int)t; + return count; + } + if (!strcmp(a->attr.name, "ipu_policy")) { if (t >= BIT(F2FS_IPU_MAX)) return -EINVAL; @@ -1054,6 +1061,8 @@ F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block); F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold); F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold); F2FS_SBI_GENERAL_RW_ATTR(last_age_weight); +/* read extent cache */ +F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count); #ifdef CONFIG_BLK_DEV_ZONED F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec); F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy); @@ -1244,6 +1253,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(hot_data_age_threshold), ATTR_LIST(warm_data_age_threshold), ATTR_LIST(last_age_weight), + ATTR_LIST(max_read_extent_count), NULL, }; ATTRIBUTE_GROUPS(f2fs); |