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nfsd4: allow setting grace period time

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Allow explicit configuration of the grace period time as well as the
lease period time.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields
2010-03-02 11:04:06 -05:00
parent f013574014
commit efc4bb4fdd
3 changed files with 21 additions and 1 deletions
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19
fs/nfsd/nfsctl.c
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@@ -45,6 +45,7 @@ enum {
*/
#ifdef CONFIG_NFSD_V4
NFSD_Leasetime,
NFSD_Gracetime,
NFSD_RecoveryDir,
#endif
};
@@ -69,6 +70,7 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size);
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
#ifdef CONFIG_NFSD_V4
static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
static ssize_t write_gracetime(struct file *file, char *buf, size_t size);
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
@@ -90,6 +92,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_MaxBlkSize] = write_maxblksize,
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = write_leasetime,
[NFSD_Gracetime] = write_gracetime,
[NFSD_RecoveryDir] = write_recoverydir,
#endif
};
@@ -1261,6 +1264,21 @@ static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
return nfsd4_write_time(file, buf, size, &nfsd4_lease);
}
/**
* write_gracetime - Set or report current NFSv4 grace period time
*
* As above, but sets the time of the NFSv4 grace period.
*
* Note this should never be set to less than the *previous*
* lease-period time, but we don't try to enforce this. (In the common
* case (a new boot), we don't know what the previous lease time was
* anyway.)
*/
static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
{
return nfsd4_write_time(file, buf, size, &nfsd4_grace);
}
extern char *nfs4_recoverydir(void);
static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
@@ -1352,6 +1370,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
#endif
/* last one */ {""}