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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:37 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:37 -0500
commit5db3a7b2cabe8f0957683f798c4f8fa8605f9ebb (patch)
tree969aa2e7561796b3b8796a2f6645693f7ebe8d20 /fs/nfs/direct.c
parenta8881f5a5c723f82da84b786d3ca83a0df9e0c33 (diff)
NFS: Debugging code for nfs_direct_(read|write)_schedule()
Make sure that we're doing our list accounting correctly. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/direct.c')
-rw-r--r--fs/nfs/direct.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e6585b9ff45..1e3725e51df 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -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)