shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 20:07:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

f2fs: introduce __check_sit_bitmap

Browse Source 
After we introduce discard thread, discard command can be issued
concurrently with data allocating, this patch adds new function to
heck sit bitmap to ensure that userdata was invalid in which on-going
discard command covered.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

 Conflicts:
	fs/f2fs/segment.c
This commit is contained in:
Chao Yu
2017-06-30 17:19:02 +08:00
committed by Jaegeuk Kim
parent 243d3acf5b
commit 3099c953cc
1 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
fs/f2fs/segment.c
View File

@@ -844,6 +844,31 @@ static int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
return 0;
}
void __check_sit_bitmap(struct f2fs_sb_info *sbi,
block_t start, block_t end)
{
#ifdef CONFIG_F2FS_CHECK_FS
struct seg_entry *sentry;
unsigned int segno;
block_t blk = start;
unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
unsigned long *map;
while (blk < end) {
segno = GET_SEGNO(sbi, blk);
sentry = get_seg_entry(sbi, segno);
offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
size = min((unsigned long)(end - blk), max_blocks);
map = (unsigned long *)(sentry->cur_valid_map);
offset = __find_rev_next_bit(map, size, offset);
f2fs_bug_on(sbi, offset != size);
blk += size;
}
#endif
}
/* this function is copied from blkdev_issue_discard from block/blk-lib.c */
static void __submit_discard_cmd(struct f2fs_sb_info *sbi,
struct discard_cmd *dc)
{
@@ -869,6 +894,7 @@ static void __submit_discard_cmd(struct f2fs_sb_info *sbi,
bio->bi_end_io = f2fs_submit_discard_endio;
submit_bio(REQ_SYNC, bio);
list_move_tail(&dc->list, &dcc->wait_list);
__check_sit_bitmap(sbi, dc->start, dc->start + dc->len);
}
} else {
__remove_discard_cmd(sbi, dc);