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Commit 013bd4c3 authored by Tsutomu Itoh's avatar Tsutomu Itoh Committed by David Sterba
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Btrfs: fix return value check of extent_io_ops 



This patch adds the check on the return value of extent_io_ops.

Signed-off-by: default avatarTsutomu Itoh <t-itoh@jp.fujitsu.com>
parent 12fc9d09

fs/btrfs/extent_io.c

+10 −6
Original line number Diff line number Diff line
@@ -2154,9 +2154,10 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page, 
		 "this_mirror=%d, num_copies=%d, in_validation=%d\n", read_mode,

		 failrec->this_mirror, num_copies, failrec->in_validation);



	tree->ops->submit_bio_hook(inode, read_mode, bio, failrec->this_mirror,

	ret = tree->ops->submit_bio_hook(inode, read_mode, bio,

					 failrec->this_mirror,

					 failrec->bio_flags, 0);

	return 0;

	return ret;

}



/* lots and lots of room for performance fixes in the end_bio funcs */
@@ -2790,9 +2791,12 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, 
				delalloc_start = delalloc_end + 1;

				continue;

			}

			tree->ops->fill_delalloc(inode, page, delalloc_start,

						 delalloc_end, &page_started,

			ret = tree->ops->fill_delalloc(inode, page,

						       delalloc_start,

						       delalloc_end,

						       &page_started,

						       &nr_written);

			BUG_ON(ret);

			/*

			 * delalloc_end is already one less than the total

			 * length, so we don't subtract one from