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f2fs: check completion of foreground GC

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The foreground GCs are triggered under not enough free sections.
So, we should not skip moving valid blocks in the victim segments.

Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-03-31 13:49:18 +09:00
parent 5ec4e49f9b
commit 4ebefc4443
1 changed files with 34 additions and 12 deletions
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46
fs/f2fs/gc.c
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@ -131,7 +131,7 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
{
struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
if (p->alloc_mode) {
if (p->alloc_mode == SSR) {
p->gc_mode = GC_GREEDY;
p->dirty_segmap = dirty_i->dirty_segmap[type];
p->ofs_unit = 1;
@ -404,8 +404,14 @@ static void gc_node_segment(struct f2fs_sb_info *sbi,
continue;
/* set page dirty and write it */
if (!PageWriteback(node_page))
if (gc_type == FG_GC) {
f2fs_submit_bio(sbi, NODE, true);
wait_on_page_writeback(node_page);
set_page_dirty(node_page);
} else {
if (!PageWriteback(node_page))
set_page_dirty(node_page);
}
f2fs_put_page(node_page, 1);
stat_inc_node_blk_count(sbi, 1);
}
@ -421,6 +427,13 @@ static void gc_node_segment(struct f2fs_sb_info *sbi,
.for_reclaim = 0,
};
sync_node_pages(sbi, 0, &wbc);
/*
* In the case of FG_GC, it'd be better to reclaim this victim
* completely.
*/
if (get_valid_blocks(sbi, segno, 1) != 0)
goto next_step;
}
}
@ -484,20 +497,19 @@ 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)
{
if (page->mapping != inode->i_mapping)
goto out;
if (inode != page->mapping->host)
goto out;
if (PageWriteback(page))
goto out;
if (gc_type == BG_GC) {
if (PageWriteback(page))
goto out;
set_page_dirty(page);
set_cold_data(page);
} else {
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
if (PageWriteback(page)) {
f2fs_submit_bio(sbi, DATA, true);
wait_on_page_writeback(page);
}
mutex_lock_op(sbi, DATA_WRITE);
if (clear_page_dirty_for_io(page) &&
S_ISDIR(inode->i_mode)) {
@ -594,8 +606,18 @@ static void gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
if (++phase < 4)
goto next_step;
if (gc_type == FG_GC)
if (gc_type == FG_GC) {
f2fs_submit_bio(sbi, DATA, true);
/*
* In the case of FG_GC, it'd be better to reclaim this victim
* completely.
*/
if (get_valid_blocks(sbi, segno, 1) != 0) {
phase = 2;
goto next_step;
}
}
}
static int __get_victim(struct f2fs_sb_info *sbi, unsigned int *victim,