NFSv4.1 move deviceid cache to filelayout driver

No need for generic cache with only one user.
Keep a simple hash of deviceids in the filelayout driver.

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Acked-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h
index 9fef76e04936..23f1e1e2a0f5 100644
--- a/fs/nfs/nfs4filelayout.h
+++ b/fs/nfs/nfs4filelayout.h
@@ -56,7 +56,9 @@ struct nfs4_pnfs_ds {
 };
 
 struct nfs4_file_layout_dsaddr {
-        struct pnfs_deviceid_node       deviceid;
+        struct hlist_node               node;
+        struct nfs4_deviceid            deviceid;
+        atomic_t                        ref;
         u32                             stripe_count;
         u8                              *stripe_indices;
         u32                             ds_num;
@@ -86,7 +88,6 @@ FILELAYOUT_LSEG(struct pnfs_layout_segment *lseg)
 extern struct nfs_fh *
 nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j);
 
-extern void nfs4_fl_free_deviceid_callback(struct pnfs_deviceid_node *);
 extern void print_ds(struct nfs4_pnfs_ds *ds);
 extern void print_deviceid(struct nfs4_deviceid *dev_id);
 u32 nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset);
@@ -94,7 +95,8 @@ u32 nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32 j);
 struct nfs4_pnfs_ds *nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg,
                                         u32 ds_idx);
 extern struct nfs4_file_layout_dsaddr *
-nfs4_fl_find_get_deviceid(struct nfs_client *, struct nfs4_deviceid *dev_id);
+nfs4_fl_find_get_deviceid(struct nfs4_deviceid *dev_id);
+extern void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
 struct nfs4_file_layout_dsaddr *
 get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id);