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Commit 5db3a7b2 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Debugging code for nfs_direct_(read|write)_schedule() 



Make sure that we're doing our list accounting correctly.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent a8881f5a

fs/nfs/direct.c

+4 −0
Original line number Diff line number Diff line
@@ -339,6 +339,7 @@ static void nfs_direct_read_schedule(struct nfs_direct_req *dreq) 
		if (count < rsize)

			bytes = count;



		BUG_ON(list_empty(list));

		data = list_entry(list->next, struct nfs_read_data, pages);

		list_del_init(&data->pages);
@@ -378,6 +379,7 @@ static void nfs_direct_read_schedule(struct nfs_direct_req *dreq) 


		count -= bytes;

	} while (count != 0);

	BUG_ON(!list_empty(list));

}



static ssize_t nfs_direct_read(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos, struct page **pages, unsigned int nr_pages)
@@ -657,6 +659,7 @@ static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, int sync) 
		if (count < wsize)

			bytes = count;



		BUG_ON(list_empty(list));

		data = list_entry(list->next, struct nfs_write_data, pages);

		list_move_tail(&data->pages, &dreq->rewrite_list);
@@ -697,6 +700,7 @@ static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, int sync) 


		count -= bytes;

	} while (count != 0);

	BUG_ON(!list_empty(list));

}



static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos, struct page **pages, int nr_pages)