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authorBenny Halevy <bhalevy@panasas.com>2011-05-22 18:51:48 +0200
committerBoaz Harrosh <bharrosh@panasas.com>2011-05-29 19:53:51 +0200
commite51b841dd0be9ff53f740c44c32c32679edcb7c8 (patch)
tree03e46d6013fa2a45ad22b3f510267d11e5f8d25a /fs
parentpnfs: alloc and free layout_hdr layoutdriver methods (diff)
downloadlinux-e51b841dd0be9ff53f740c44c32c32679edcb7c8.tar.xz
linux-e51b841dd0be9ff53f740c44c32c32679edcb7c8.zip
pnfs-obj: define per-inode private structure
allocate and deallocate per-inode private pnfs_layout_hdr in preparation for I/O implementation. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/objlayout/objio_osd.c3
-rw-r--r--fs/nfs/objlayout/objlayout.c26
-rw-r--r--fs/nfs/objlayout/objlayout.h17
3 files changed, 46 insertions, 0 deletions
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index 2255e2d22d05..353821f7937b 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -364,6 +364,9 @@ static struct pnfs_layoutdriver_type objlayout_type = {
.id = LAYOUT_OSD2_OBJECTS,
.name = "LAYOUT_OSD2_OBJECTS",
+ .alloc_layout_hdr = objlayout_alloc_layout_hdr,
+ .free_layout_hdr = objlayout_free_layout_hdr,
+
.alloc_lseg = objlayout_alloc_lseg,
.free_lseg = objlayout_free_lseg,
diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c
index 10e5fca3b7fb..f14b4da34052 100644
--- a/fs/nfs/objlayout/objlayout.c
+++ b/fs/nfs/objlayout/objlayout.c
@@ -42,6 +42,32 @@
#define NFSDBG_FACILITY NFSDBG_PNFS_LD
/*
+ * Create a objlayout layout structure for the given inode and return it.
+ */
+struct pnfs_layout_hdr *
+objlayout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags)
+{
+ struct objlayout *objlay;
+
+ objlay = kzalloc(sizeof(struct objlayout), gfp_flags);
+ dprintk("%s: Return %p\n", __func__, objlay);
+ return &objlay->pnfs_layout;
+}
+
+/*
+ * Free an objlayout layout structure
+ */
+void
+objlayout_free_layout_hdr(struct pnfs_layout_hdr *lo)
+{
+ struct objlayout *objlay = OBJLAYOUT(lo);
+
+ dprintk("%s: objlay %p\n", __func__, objlay);
+
+ kfree(objlay);
+}
+
+/*
* Unmarshall layout and store it in pnfslay.
*/
struct pnfs_layout_segment *
diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h
index 0814271bb9ba..fa0262149f59 100644
--- a/fs/nfs/objlayout/objlayout.h
+++ b/fs/nfs/objlayout/objlayout.h
@@ -46,6 +46,19 @@
#include "../pnfs.h"
/*
+ * per-inode layout
+ */
+struct objlayout {
+ struct pnfs_layout_hdr pnfs_layout;
+};
+
+static inline struct objlayout *
+OBJLAYOUT(struct pnfs_layout_hdr *lo)
+{
+ return container_of(lo, struct objlayout, pnfs_layout);
+}
+
+/*
* Raid engine I/O API
*/
extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
@@ -66,6 +79,10 @@ extern void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr);
/*
* exported generic objects function vectors
*/
+
+extern struct pnfs_layout_hdr *objlayout_alloc_layout_hdr(struct inode *, gfp_t gfp_flags);
+extern void objlayout_free_layout_hdr(struct pnfs_layout_hdr *);
+
extern struct pnfs_layout_segment *objlayout_alloc_lseg(
struct pnfs_layout_hdr *,
struct nfs4_layoutget_res *,