On Thu, Nov 10, 2022 at 02:35:49AM +0800, Yangtao Li wrote:
> +++ b/fs/f2fs/segment.c
> @@ -486,7 +486,17 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool
> from_bg)
> static int __submit_flush_wait(struct f2fs_sb_info *sbi,
> struct block_device *bdev)
> {
> - int ret = blkdev_issue_flush(bdev);
> + int ret;
> +
> + if (time_to_inject(sbi, FAULT_FLUSH)) {
> + f2fs_show_injection_info(sbi, FAULT_FLUSH);
> + ret = -EIO;
> + goto submit;
submit? You don't submit anything at the 'submit' label. it should
be called 'skip' or something. But I think this is just badly written
and you don't need a goto at all.
What I don't understand about this patch is why you want it at all.
What failure are you simulating? It appears to me that you're
simulating a bug in the filesystem, or maybe a bug in the device
firmware. But why do you want to do that?
> + }
> +
> + ret = blkdev_issue_flush(bdev);
> +
> +submit:
>
> trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
> test_opt(sbi, FLUSH_MERGE), ret);
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index a43d8a46a6e5..3d3d22ac527b 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -62,6 +62,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
> [FAULT_DQUOT_INIT] = "dquot initialize",
> [FAULT_LOCK_OP] = "lock_op",
> [FAULT_BLKADDR] = "invalid blkaddr",
> + [FAULT_FLUSH] = "flush error",
> };
>
> void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
> --
> 2.25.1
>
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