path: root/fs/nfs/pnfs.h
diff options
authorBenny Halevy <bhalevy@panasas.com>2011-07-30 20:52:36 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-31 12:18:15 -0400
commit738fd0f360359aecc7fcd7604bbe9e854d81fb1f (patch)
treec2d7ba1680ee37383f1fd537cdafba6fef5dfd8e /fs/nfs/pnfs.h
parent7f11d8d38d64739e190581e015a2a2730ff54e2a (diff)
pnfs: add set-clear layoutdriver interface
To allow layout driver to issue getdevicelist at mount time, and clean up at umount time. [fixup non NFS_V4_1 set_pnfs_layoutdriver definition] [pnfs: pass mntfh down the init_pnfs path] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 7074394944a9..bddd8b997e18 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -80,6 +80,9 @@ struct pnfs_layoutdriver_type {
struct module *owner;
unsigned flags;
+ int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);
+ int (*clear_layoutdriver) (struct nfs_server *);
struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
void (*free_layout_hdr) (struct pnfs_layout_hdr *);
@@ -167,7 +170,7 @@ void put_lseg(struct pnfs_layout_segment *lseg);
bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *);
bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, int);
-void set_pnfs_layoutdriver(struct nfs_server *, u32 id);
+void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);
void unset_pnfs_layoutdriver(struct nfs_server *);
void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
@@ -374,7 +377,8 @@ pnfs_roc_drain(struct inode *ino, u32 *barrier)
return false;
-static inline void set_pnfs_layoutdriver(struct nfs_server *s, u32 id)
+static inline void set_pnfs_layoutdriver(struct nfs_server *s,
+ const struct nfs_fh *mntfh, u32 id);