f2fs: account read IOs and use IO counts for is_idle
This patch adds issued read IO counts which is under block layer. Chao modified a bit, since: Below race can cause reversed reference on F2FS_RD_DATA, there is the same issue in f2fs_submit_page_bio(), fix them by relocate __submit_bio() and inc_page_count. Thread A Thread B - f2fs_write_begin - f2fs_submit_page_read - __submit_bio - f2fs_read_end_io - __read_end_io - dec_page_count(, F2FS_RD_DATA) - inc_page_count(, F2FS_RD_DATA) Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
parent
78efac537d
commit
5f9abab42b
|
@ -52,6 +52,23 @@ static bool __is_cp_guaranteed(struct page *page)
|
|||
return false;
|
||||
}
|
||||
|
||||
static enum count_type __read_io_type(struct page *page)
|
||||
{
|
||||
struct address_space *mapping = page->mapping;
|
||||
|
||||
if (mapping) {
|
||||
struct inode *inode = mapping->host;
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
|
||||
if (inode->i_ino == F2FS_META_INO(sbi))
|
||||
return F2FS_RD_META;
|
||||
|
||||
if (inode->i_ino == F2FS_NODE_INO(sbi))
|
||||
return F2FS_RD_NODE;
|
||||
}
|
||||
return F2FS_RD_DATA;
|
||||
}
|
||||
|
||||
/* postprocessing steps for read bios */
|
||||
enum bio_post_read_step {
|
||||
STEP_INITIAL = 0,
|
||||
|
@ -82,6 +99,7 @@ static void __read_end_io(struct bio *bio)
|
|||
} else {
|
||||
SetPageUptodate(page);
|
||||
}
|
||||
dec_page_count(F2FS_P_SB(page), __read_io_type(page));
|
||||
unlock_page(page);
|
||||
}
|
||||
if (bio->bi_private)
|
||||
|
@ -466,8 +484,8 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
|
|||
|
||||
bio_set_op_attrs(bio, fio->op, fio->op_flags);
|
||||
|
||||
if (!is_read_io(fio->op))
|
||||
inc_page_count(fio->sbi, WB_DATA_TYPE(fio->page));
|
||||
inc_page_count(fio->sbi, is_read_io(fio->op) ?
|
||||
__read_io_type(page): WB_DATA_TYPE(fio->page));
|
||||
|
||||
__submit_bio(fio->sbi, bio, fio->type);
|
||||
return 0;
|
||||
|
@ -598,6 +616,7 @@ static int f2fs_submit_page_read(struct inode *inode, struct page *page,
|
|||
return -EFAULT;
|
||||
}
|
||||
ClearPageError(page);
|
||||
inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA);
|
||||
__submit_bio(F2FS_I_SB(inode), bio, DATA);
|
||||
return 0;
|
||||
}
|
||||
|
@ -1586,6 +1605,7 @@ submit_and_realloc:
|
|||
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
|
||||
goto submit_and_realloc;
|
||||
|
||||
inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA);
|
||||
ClearPageError(page);
|
||||
last_block_in_bio = block_nr;
|
||||
goto next_page;
|
||||
|
|
|
@ -55,6 +55,9 @@ static void update_general_status(struct f2fs_sb_info *sbi)
|
|||
si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
|
||||
si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
|
||||
si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
|
||||
si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
|
||||
si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
|
||||
si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
|
||||
if (SM_I(sbi) && SM_I(sbi)->fcc_info) {
|
||||
si->nr_flushed =
|
||||
atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
|
||||
|
@ -371,7 +374,9 @@ static int stat_show(struct seq_file *s, void *v)
|
|||
seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
|
||||
si->ext_tree, si->zombie_tree, si->ext_node);
|
||||
seq_puts(s, "\nBalancing F2FS Async:\n");
|
||||
seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
|
||||
seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
|
||||
si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
|
||||
seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
|
||||
"Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
|
||||
si->nr_wb_cp_data, si->nr_wb_data,
|
||||
si->nr_flushing, si->nr_flushed,
|
||||
|
|
|
@ -950,6 +950,9 @@ enum count_type {
|
|||
F2FS_DIRTY_IMETA,
|
||||
F2FS_WB_CP_DATA,
|
||||
F2FS_WB_DATA,
|
||||
F2FS_RD_DATA,
|
||||
F2FS_RD_NODE,
|
||||
F2FS_RD_META,
|
||||
NR_COUNT_TYPE,
|
||||
};
|
||||
|
||||
|
@ -1392,11 +1395,6 @@ static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
|
|||
return wait_ms;
|
||||
}
|
||||
|
||||
static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
|
||||
{
|
||||
return f2fs_time_over(sbi, type);
|
||||
}
|
||||
|
||||
/*
|
||||
* Inline functions
|
||||
*/
|
||||
|
@ -1787,7 +1785,9 @@ static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
|
|||
atomic_inc(&sbi->nr_pages[count_type]);
|
||||
|
||||
if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
|
||||
count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
|
||||
count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA ||
|
||||
count_type == F2FS_RD_DATA || count_type == F2FS_RD_NODE ||
|
||||
count_type == F2FS_RD_META)
|
||||
return;
|
||||
|
||||
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
||||
|
@ -2124,6 +2124,15 @@ static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
|
|||
return bio_alloc(GFP_KERNEL, npages);
|
||||
}
|
||||
|
||||
static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
|
||||
{
|
||||
if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
|
||||
get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
|
||||
get_pages(sbi, F2FS_WB_CP_DATA))
|
||||
return false;
|
||||
return f2fs_time_over(sbi, type);
|
||||
}
|
||||
|
||||
static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
|
||||
unsigned long index, void *item)
|
||||
{
|
||||
|
@ -3114,6 +3123,7 @@ struct f2fs_stat_info {
|
|||
int free_nids, avail_nids, alloc_nids;
|
||||
int total_count, utilization;
|
||||
int bg_gc, nr_wb_cp_data, nr_wb_data;
|
||||
int nr_rd_data, nr_rd_node, nr_rd_meta;
|
||||
unsigned int io_skip_bggc, other_skip_bggc;
|
||||
int nr_flushing, nr_flushed, flush_list_empty;
|
||||
int nr_discarding, nr_discarded;
|
||||
|
|
Loading…
Reference in New Issue