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| author |   Benny Halevy <bhalevy@panasas.com> | 2011-05-22 19:51:48 +0300 |
|---|---|---|
| committer |   Boaz Harrosh <bharrosh@panasas.com> | 2011-05-29 20:53:51 +0300 |
| commit | e51b841dd0be9ff53f740c44c32c32679edcb7c8 (patch) | |
| tree | 03e46d6013fa2a45ad22b3f510267d11e5f8d25a /fs/nfs | |
| parent | pnfs: alloc and free layout_hdr layoutdriver methods (diff) | |
| download | linux-dev-e51b841dd0be9ff53f740c44c32c32679edcb7c8.tar.xz linux-dev-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/nfs')
| -rw-r--r-- | fs/nfs/objlayout/objio_osd.c | 3 | ||||
| -rw-r--r-- | fs/nfs/objlayout/objlayout.c | 26 | ||||
| -rw-r--r-- | fs/nfs/objlayout/objlayout.h | 17 |
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 *, |