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NFSv4.1: make deviceid cache global

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Move deviceid cache from the pnfs files layout driver to the
generic layer in preparation for the objects layout driver.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-19 22:14:47 -04:00
committed by Boaz Harrosh
parent 45df3c8b0f
commit a1eaecbc4c
6 changed files with 194 additions and 103 deletions
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17
fs/nfs/pnfs.h
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@@ -157,6 +157,23 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier);
void pnfs_set_layoutcommit(struct nfs_write_data *wdata);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
/* pnfs_dev.c */
struct nfs4_deviceid_node {
struct hlist_node node;
const struct nfs_client *nfs_client;
struct nfs4_deviceid deviceid;
atomic_t ref;
};
void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id);
struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct nfs_client *, const struct nfs4_deviceid *);
struct nfs4_deviceid_node *nfs4_unhash_put_deviceid(const struct nfs_client *, const struct nfs4_deviceid *);
void nfs4_init_deviceid_node(struct nfs4_deviceid_node *,
const struct nfs_client *,
const struct nfs4_deviceid *);
struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *);
bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
static inline int lo_fail_bit(u32 iomode)
{
return iomode == IOMODE_RW ?