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f2fs: support discard submission error injection 

This patch adds to support discard submission error injection for testing
error handling of __submit_discard_cmd().

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-08-06 20:30:18 +08:00 committed by Jaegeuk Kim
parent 35ec7d5748
commit b83dcfe671
3 changed files with 10 additions and 0 deletions
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1
fs/f2fs/f2fs.h
View File

@ -56,6 +56,7 @@ enum {
FAULT_TRUNCATE, FAULT_TRUNCATE,
FAULT_IO, FAULT_IO,
FAULT_CHECKPOINT, FAULT_CHECKPOINT,
FAULT_DISCARD,
FAULT_MAX, FAULT_MAX,
}; };

8
fs/f2fs/segment.c
View File

@ -1041,10 +1041,18 @@ static void __submit_discard_cmd(struct f2fs_sb_info *sbi,
dc->len += len; dc->len += len;
#ifdef CONFIG_F2FS_FAULT_INJECTION
if (time_to_inject(sbi, FAULT_DISCARD)) {
f2fs_show_injection_info(FAULT_DISCARD);
err = -EIO;
goto submit;
}
#endif
err = __blkdev_issue_discard(bdev, err = __blkdev_issue_discard(bdev,
SECTOR_FROM_BLOCK(start), SECTOR_FROM_BLOCK(start),
SECTOR_FROM_BLOCK(len), SECTOR_FROM_BLOCK(len),
GFP_NOFS, 0, &bio); GFP_NOFS, 0, &bio);
submit:
if (!err && bio) { if (!err && bio) {
/* /*
* should keep before submission to avoid D_DONE * should keep before submission to avoid D_DONE

1
fs/f2fs/super.c
View File

@ -55,6 +55,7 @@ char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_TRUNCATE] = "truncate fail", [FAULT_TRUNCATE] = "truncate fail",
[FAULT_IO] = "IO error", [FAULT_IO] = "IO error",
[FAULT_CHECKPOINT] = "checkpoint error", [FAULT_CHECKPOINT] = "checkpoint error",
[FAULT_DISCARD] = "discard error",
}; };
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate) void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate)