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pnfs: update nfs4_callback_recallany to handle layouts

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While here, update the code a bit.

Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Alexandros Batsakis 2011-01-06 11:36:31 +00:00 committed by Trond Myklebust
parent 43f1b3da8b
commit 3684037084
2 changed files with 34 additions and 3 deletions
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8
fs/nfs/callback.h
View File

@ -119,6 +119,14 @@ extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation,
#define RCA4_TYPE_MASK_RDATA_DLG 0
#define RCA4_TYPE_MASK_WDATA_DLG 1
#define RCA4_TYPE_MASK_DIR_DLG 2
#define RCA4_TYPE_MASK_FILE_LAYOUT 3
#define RCA4_TYPE_MASK_BLK_LAYOUT 4
#define RCA4_TYPE_MASK_OBJ_LAYOUT_MIN 8
#define RCA4_TYPE_MASK_OBJ_LAYOUT_MAX 9
#define RCA4_TYPE_MASK_OTHER_LAYOUT_MIN 12
#define RCA4_TYPE_MASK_OTHER_LAYOUT_MAX 15
#define RCA4_TYPE_MASK_ALL 0xf31f
struct cb_recallanyargs {
struct sockaddr *craa_addr;

29
fs/nfs/callback_proc.c
View File

@ -230,6 +230,17 @@ __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
return cpu_to_be32(res);
}
static void pnfs_recall_all_layouts(struct nfs_client *clp)
{
struct cb_layoutrecallargs args;
/* Pretend we got a CB_LAYOUTRECALL(ALL) */
memset(&args, 0, sizeof(args));
args.cbl_recall_type = RETURN_ALL;
/* FIXME we ignore errors, what should we do? */
do_callback_layoutrecall(clp, &args);
}
int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL)
@ -421,29 +432,41 @@ out:
return status;
}
static bool
validate_bitmap_values(unsigned long mask)
{
return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
}
__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy,
struct cb_process_state *cps)
{
__be32 status;
fmode_t flags = 0;
status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
if (!cps->clp) /* set in cb_sequence */
goto out;
dprintk("NFS: RECALL_ANY callback request from %s\n",
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
status = cpu_to_be32(NFS4ERR_INVAL);
if (!validate_bitmap_values(args->craa_type_mask))
goto out;
status = cpu_to_be32(NFS4_OK);
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags = FMODE_READ;
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags |= FMODE_WRITE;
if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
&args->craa_type_mask))
pnfs_recall_all_layouts(cps->clp);
if (flags)
nfs_expire_all_delegation_types(cps->clp, flags);
status = htonl(NFS4_OK);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;