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Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c63
1 files changed, 37 insertions, 26 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 18060bed5267..aa1d0d6489a1 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -83,7 +83,6 @@ struct raparm_hbucket {
spinlock_t pb_lock;
} ____cacheline_aligned_in_smp;
-static struct raparms * raparml;
#define RAPARM_HASH_BITS 4
#define RAPARM_HASH_SIZE (1<<RAPARM_HASH_BITS)
#define RAPARM_HASH_MASK (RAPARM_HASH_SIZE-1)
@@ -1866,9 +1865,9 @@ out:
* N.B. After this call fhp needs an fh_put
*/
__be32
-nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
+nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat, int access)
{
- __be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
+ __be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP | access);
if (!err && vfs_statfs(fhp->fh_dentry,stat))
err = nfserr_io;
return err;
@@ -1966,11 +1965,20 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
void
nfsd_racache_shutdown(void)
{
- if (!raparml)
- return;
+ struct raparms *raparm, *last_raparm;
+ unsigned int i;
+
dprintk("nfsd: freeing readahead buffers.\n");
- kfree(raparml);
- raparml = NULL;
+
+ for (i = 0; i < RAPARM_HASH_SIZE; i++) {
+ raparm = raparm_hash[i].pb_head;
+ while(raparm) {
+ last_raparm = raparm;
+ raparm = raparm->p_next;
+ kfree(last_raparm);
+ }
+ raparm_hash[i].pb_head = NULL;
+ }
}
/*
* Initialize readahead param cache
@@ -1981,35 +1989,38 @@ nfsd_racache_init(int cache_size)
int i;
int j = 0;
int nperbucket;
+ struct raparms **raparm = NULL;
- if (raparml)
+ if (raparm_hash[0].pb_head)
return 0;
- if (cache_size < 2*RAPARM_HASH_SIZE)
- cache_size = 2*RAPARM_HASH_SIZE;
- raparml = kcalloc(cache_size, sizeof(struct raparms), GFP_KERNEL);
-
- if (!raparml) {
- printk(KERN_WARNING
- "nfsd: Could not allocate memory read-ahead cache.\n");
- return -ENOMEM;
- }
+ nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
+ if (nperbucket < 2)
+ nperbucket = 2;
+ cache_size = nperbucket * RAPARM_HASH_SIZE;
dprintk("nfsd: allocating %d readahead buffers.\n", cache_size);
- for (i = 0 ; i < RAPARM_HASH_SIZE ; i++) {
- raparm_hash[i].pb_head = NULL;
+
+ for (i = 0; i < RAPARM_HASH_SIZE; i++) {
spin_lock_init(&raparm_hash[i].pb_lock);
- }
- nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
- for (i = 0; i < cache_size - 1; i++) {
- if (i % nperbucket == 0)
- raparm_hash[j++].pb_head = raparml + i;
- if (i % nperbucket < nperbucket-1)
- raparml[i].p_next = raparml + i + 1;
+
+ raparm = &raparm_hash[i].pb_head;
+ for (j = 0; j < nperbucket; j++) {
+ *raparm = kzalloc(sizeof(struct raparms), GFP_KERNEL);
+ if (!*raparm)
+ goto out_nomem;
+ raparm = &(*raparm)->p_next;
+ }
+ *raparm = NULL;
}
nfsdstats.ra_size = cache_size;
return 0;
+
+out_nomem:
+ dprintk("nfsd: kmalloc failed, freeing readahead buffers\n");
+ nfsd_racache_shutdown();
+ return -ENOMEM;
}
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)