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fs/nfsd: change type of max_delegations, nfsd_drc_max_mem and nfsd_drc_mem_used 

The three variables are calculated from nr_free_buffer_pages so change
their types to unsigned long in case of overflow.

Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Zhang Yanfei 2013-02-22 16:35:47 -08:00 committed by Linus Torvalds
parent 43be594a6b
commit 697ce9be7d
3 changed files with 9 additions and 9 deletions
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4
fs/nfsd/nfs4state.c
View File

@ -151,7 +151,7 @@ get_nfs4_file(struct nfs4_file *fi)
}
static int num_delegations;
unsigned int max_delegations;
unsigned long max_delegations;
/*
* Open owner state (share locks)
@ -700,7 +700,7 @@ static int nfsd4_get_drc_mem(int slotsize, u32 num)
num = min_t(u32, num, NFSD_MAX_SLOTS_PER_SESSION);
spin_lock(&nfsd_drc_lock);
avail = min_t(int, NFSD_MAX_MEM_PER_SESSION,
avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION,
nfsd_drc_max_mem - nfsd_drc_mem_used);
num = min_t(int, num, avail / slotsize);
nfsd_drc_mem_used += num * slotsize;

6
fs/nfsd/nfsd.h
View File

@ -56,8 +56,8 @@ extern struct svc_version nfsd_version2, nfsd_version3,
extern u32 nfsd_supported_minorversion;
extern struct mutex nfsd_mutex;
extern spinlock_t nfsd_drc_lock;
extern unsigned int nfsd_drc_max_mem;
extern unsigned int nfsd_drc_mem_used;
extern unsigned long nfsd_drc_max_mem;
extern unsigned long nfsd_drc_mem_used;
extern const struct seq_operations nfs_exports_op;
@ -106,7 +106,7 @@ static inline int nfsd_v4client(struct svc_rqst *rq)
* NFSv4 State
*/
#ifdef CONFIG_NFSD_V4
extern unsigned int max_delegations;
extern unsigned long max_delegations;
void nfs4_state_init(void);
int nfsd4_init_slabs(void);
void nfsd4_free_slabs(void);

6
fs/nfsd/nfssvc.c
View File

@ -59,8 +59,8 @@ DEFINE_MUTEX(nfsd_mutex);
* nfsd_drc_pages_used tracks the current version 4.1 DRC memory usage.
*/
spinlock_t nfsd_drc_lock;
unsigned int nfsd_drc_max_mem;
unsigned int nfsd_drc_mem_used;
unsigned long nfsd_drc_max_mem;
unsigned long nfsd_drc_mem_used;
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
static struct svc_stat nfsd_acl_svcstats;
@ -342,7 +342,7 @@ static void set_max_drc(void)
>> NFSD_DRC_SIZE_SHIFT) * PAGE_SIZE;
nfsd_drc_mem_used = 0;
spin_lock_init(&nfsd_drc_lock);
dprintk("%s nfsd_drc_max_mem %u \n", __func__, nfsd_drc_max_mem);
dprintk("%s nfsd_drc_max_mem %lu \n", __func__, nfsd_drc_max_mem);
}
static int nfsd_get_default_max_blksize(void)