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NFS: blocklayout pipe creation per network namespace context introduced

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This patch implements blocklayout pipe creation and registration per each
existent network namespace.
This was achived by registering NFS per-net operations, responsible for
blocklayout pipe allocation/register and unregister/destruction instead of
initialization and destruction of static "bl_device_pipe" pipe (this one was
removed).
Note, than pointer to network blocklayout pipe is stored in per-net "nfs_net"
structure, because allocating of one more per-net structure for blocklayout
module looks redundant.
This patch also changes dev_remove() function prototype (and all it's callers,
where it' requied) by adding network namespace pointer parameter, which is used
to discover proper blocklayout pipe for rpc_queue_upcall() call.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Stanislav Kinsbursky
2012-01-10 17:04:24 +04:00
committed by Trond Myklebust
parent 332dfab6f4
commit 9e2e74dba6
6 changed files with 47 additions and 24 deletions
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3
fs/nfs/blocklayout/blocklayout.h
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@@ -37,6 +37,7 @@
#include <linux/sunrpc/rpc_pipe_fs.h>
#include "../pnfs.h"
#include "../netns.h"
#define PAGE_CACHE_SECTORS (PAGE_CACHE_SIZE >> SECTOR_SHIFT)
#define PAGE_CACHE_SECTOR_SHIFT (PAGE_CACHE_SHIFT - SECTOR_SHIFT)
@@ -50,6 +51,7 @@ struct pnfs_block_dev {
struct list_head bm_node;
struct nfs4_deviceid bm_mdevid; /* associated devid */
struct block_device *bm_mdev; /* meta device itself */
struct net *net;
};
enum exstate4 {
@@ -161,7 +163,6 @@ struct bl_msg_hdr {
u16 totallen; /* length of entire message, including hdr itself */
};
extern struct rpc_pipe *bl_device_pipe;
extern wait_queue_head_t bl_wq;
#define BL_DEVICE_UMOUNT 0x0 /* Umount--delete devices */