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Commit 8bdb419b authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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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: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent c813f5a0

fs/f2fs/f2fs.h

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ enum { 
	FAULT_TRUNCATE,

	FAULT_IO,

	FAULT_CHECKPOINT,

	FAULT_DISCARD,

	FAULT_MAX,

};

fs/f2fs/segment.c

+8 −0
Original line number Diff line number Diff line
@@ -1041,10 +1041,18 @@ static void __submit_discard_cmd(struct f2fs_sb_info *sbi, 


		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,

					SECTOR_FROM_BLOCK(start),

					SECTOR_FROM_BLOCK(len),

					GFP_NOFS, 0, &bio);

submit:

		if (!err && bio) {

			/*

			 * should keep before submission to avoid D_DONE

fs/f2fs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ char *f2fs_fault_name[FAULT_MAX] = { 
	[FAULT_TRUNCATE]	= "truncate fail",

	[FAULT_IO]		= "IO error",

	[FAULT_CHECKPOINT]	= "checkpoint error",

	[FAULT_DISCARD]		= "discard error",

};



void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate)