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f2fs: refactor bio->rw handling

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This patch introduces f2fs_io_info to mitigate the complex parameter list.

struct f2fs_io_info {
	enum page_type type;		/* contains DATA/NODE/META/META_FLUSH */
	int rw;				/* contains R/RS/W/WS */
	int rw_flag;			/* contains REQ_META/REQ_PRIO */
}

1. f2fs_write_data_pages
 - DATA
 - WRITE_SYNC is set when wbc->WB_SYNC_ALL.

2. sync_node_pages
 - NODE
 - WRITE_SYNC all the time

3. sync_meta_pages
 - META
 - WRITE_SYNC all the time
 - REQ_META | REQ_PRIO all the time

 ** f2fs_submit_merged_bio() handles META_FLUSH.

4. ra_nat_pages, ra_sit_pages, ra_sum_pages
 - META
 - READ_SYNC

Cc: Fan Li <fanofcode.li@samsung.com>
Cc: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim
2013-12-11 13:54:01 +09:00
förälder 63a0b7cb33
incheckning 458e6197c3
7 ändrade filer med 132 tillägg och 95 borttagningar
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10
fs/f2fs/gc.c
Visa fil

@@ -520,8 +520,10 @@ static int check_dnode(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
static void move_data_page(struct inode *inode, struct page *page, int gc_type)
{
struct writeback_control wbc = {
.sync_mode = 1,
struct f2fs_io_info fio = {
.type = DATA,
.rw = WRITE_SYNC,
.rw_flag = 0,
};
if (gc_type == BG_GC) {
@@ -540,7 +542,7 @@ static void move_data_page(struct inode *inode, struct page *page, int gc_type)
inode_dec_dirty_dents(inode);
}
set_cold_data(page);
do_write_data_page(page, &wbc);
do_write_data_page(page, &fio);
clear_cold_data(page);
}
out:
@@ -634,7 +636,7 @@ next_iput:
goto next_step;
if (gc_type == FG_GC) {
f2fs_submit_merged_bio(sbi, DATA, true, WRITE);
f2fs_submit_merged_bio(sbi, DATA, WRITE);
/*
* In the case of FG_GC, it'd be better to reclaim this victim