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[PATCH] nfsd4: slabify stateids

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Allocate stateid's from a slab cache.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2005-06-23 22:03:03 -07:00 committed by Linus Torvalds
parent e60d4398a7
commit 5ac049ac66
1 changed files with 17 additions and 5 deletions
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22
fs/nfsd/nfs4state.c
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@ -90,6 +90,7 @@ static DECLARE_MUTEX(client_sema);
kmem_cache_t *stateowner_slab = NULL;
kmem_cache_t *file_slab = NULL;
kmem_cache_t *stateid_slab = NULL;
void
nfs4_lock_state(void)
@ -1010,6 +1011,7 @@ nfsd4_free_slabs(void)
{
nfsd4_free_slab(&stateowner_slab);
nfsd4_free_slab(&file_slab);
nfsd4_free_slab(&stateid_slab);
}
static int
@ -1023,6 +1025,10 @@ nfsd4_init_slabs(void)
sizeof(struct nfs4_file), 0, 0, NULL, NULL);
if (file_slab == NULL)
goto out_nomem;
stateid_slab = kmem_cache_create("nfsd4_stateids",
sizeof(struct nfs4_stateid), 0, 0, NULL, NULL);
if (stateid_slab == NULL)
goto out_nomem;
return 0;
out_nomem:
nfsd4_free_slabs();
@ -1173,7 +1179,7 @@ release_stateid(struct nfs4_stateid *stp, int flags)
vfsclose++;
} else if (flags & LOCK_STATE)
locks_remove_posix(filp, (fl_owner_t) stp->st_stateowner);
kfree(stp);
kmem_cache_free(stateid_slab, stp);
stp = NULL;
}
@ -1606,6 +1612,12 @@ nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_state
return status;
}
static inline struct nfs4_stateid *
nfs4_alloc_stateid(void)
{
return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
}
static int
nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
struct nfs4_delegation *dp,
@ -1613,7 +1625,7 @@ nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
{
struct nfs4_stateid *stp;
stp = kmalloc(sizeof(struct nfs4_stateid), GFP_KERNEL);
stp = nfs4_alloc_stateid();
if (stp == NULL)
return nfserr_resource;
@ -1627,7 +1639,7 @@ nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
if (status) {
if (status == nfserr_dropit)
status = nfserr_jukebox;
kfree(stp);
kmem_cache_free(stateid_slab, stp);
return status;
}
}
@ -2627,8 +2639,8 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc
struct nfs4_stateid *stp;
unsigned int hashval = stateid_hashval(sop->so_id, fp->fi_id);
if ((stp = kmalloc(sizeof(struct nfs4_stateid),
GFP_KERNEL)) == NULL)
stp = nfs4_alloc_stateid();
if (stp == NULL)
goto out;
INIT_LIST_HEAD(&stp->st_hash);
INIT_LIST_HEAD(&stp->st_perfile);