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NFS: add a struct nfs_commit_data to replace nfs_write_data in commits

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Commits don't need the vectors of pages, etc. that writes do. Split out
a separate structure for the commit operation.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Fred Isaman
2012-04-20 14:47:39 -04:00
committed by Trond Myklebust
parent 799ba8d53d
commit 0b7c01533a
11 changed files with 173 additions and 76 deletions
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50
fs/nfs/write.c
View File

@@ -48,11 +48,12 @@ static const struct rpc_call_ops nfs_commit_ops;
static struct kmem_cache *nfs_wdata_cachep;
static mempool_t *nfs_wdata_mempool;
static struct kmem_cache *nfs_cdata_cachep;
static mempool_t *nfs_commit_mempool;
struct nfs_write_data *nfs_commitdata_alloc(void)
struct nfs_commit_data *nfs_commitdata_alloc(void)
{
struct nfs_write_data *p = mempool_alloc(nfs_commit_mempool, GFP_NOFS);
struct nfs_commit_data *p = mempool_alloc(nfs_commit_mempool, GFP_NOFS);
if (p) {
memset(p, 0, sizeof(*p));
@@ -62,10 +63,8 @@ struct nfs_write_data *nfs_commitdata_alloc(void)
}
EXPORT_SYMBOL_GPL(nfs_commitdata_alloc);
void nfs_commit_free(struct nfs_write_data *p)
void nfs_commit_free(struct nfs_commit_data *p)
{
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
mempool_free(p, nfs_commit_mempool);
}
EXPORT_SYMBOL_GPL(nfs_commit_free);
@@ -1179,6 +1178,13 @@ void nfs_write_prepare(struct rpc_task *task, void *calldata)
NFS_PROTO(data->inode)->write_rpc_prepare(task, data);
}
void nfs_commit_prepare(struct rpc_task *task, void *calldata)
{
struct nfs_commit_data *data = calldata;
NFS_PROTO(data->inode)->commit_rpc_prepare(task, data);
}
static const struct rpc_call_ops nfs_write_partial_ops = {
.rpc_call_prepare = nfs_write_prepare,
.rpc_call_done = nfs_writeback_done_partial,
@@ -1355,16 +1361,14 @@ void nfs_commit_clear_lock(struct nfs_inode *nfsi)
}
EXPORT_SYMBOL_GPL(nfs_commit_clear_lock);
void nfs_commitdata_release(void *data)
void nfs_commitdata_release(struct nfs_commit_data *data)
{
struct nfs_write_data *wdata = data;
put_nfs_open_context(wdata->args.context);
nfs_commit_free(wdata);
put_nfs_open_context(data->context);
nfs_commit_free(data);
}
EXPORT_SYMBOL_GPL(nfs_commitdata_release);
int nfs_initiate_commit(struct nfs_write_data *data, struct rpc_clnt *clnt,
int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data,
const struct rpc_call_ops *call_ops,
int how)
{
@@ -1403,7 +1407,7 @@ EXPORT_SYMBOL_GPL(nfs_initiate_commit);
/*
* Set up the argument/result storage required for the RPC call.
*/
void nfs_init_commit(struct nfs_write_data *data,
void nfs_init_commit(struct nfs_commit_data *data,
struct list_head *head,
struct pnfs_layout_segment *lseg)
{
@@ -1424,8 +1428,7 @@ void nfs_init_commit(struct nfs_write_data *data,
/* Note: we always request a commit of the entire inode */
data->args.offset = 0;
data->args.count = 0;
data->args.context = get_nfs_open_context(first->wb_context);
data->res.count = 0;
data->context = get_nfs_open_context(first->wb_context);
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
nfs_fattr_init(&data->fattr);
@@ -1455,7 +1458,7 @@ EXPORT_SYMBOL_GPL(nfs_retry_commit);
static int
nfs_commit_list(struct inode *inode, struct list_head *head, int how)
{
struct nfs_write_data *data;
struct nfs_commit_data *data;
data = nfs_commitdata_alloc();
@@ -1464,7 +1467,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
/* Set up the argument struct */
nfs_init_commit(data, head, NULL);
return nfs_initiate_commit(data, NFS_CLIENT(inode), data->mds_ops, how);
return nfs_initiate_commit(NFS_CLIENT(inode), data, data->mds_ops, how);
out_bad:
nfs_retry_commit(head, NULL);
nfs_commit_clear_lock(NFS_I(inode));
@@ -1476,7 +1479,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
*/
static void nfs_commit_done(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
struct nfs_commit_data *data = calldata;
dprintk("NFS: %5u nfs_commit_done (status %d)\n",
task->tk_pid, task->tk_status);
@@ -1485,7 +1488,7 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
NFS_PROTO(data->inode)->commit_done(task, data);
}
void nfs_commit_release_pages(struct nfs_write_data *data)
void nfs_commit_release_pages(struct nfs_commit_data *data)
{
struct nfs_page *req;
int status = data->task.tk_status;
@@ -1526,7 +1529,7 @@ EXPORT_SYMBOL_GPL(nfs_commit_release_pages);
static void nfs_commit_release(void *calldata)
{
struct nfs_write_data *data = calldata;
struct nfs_commit_data *data = calldata;
nfs_commit_release_pages(data);
nfs_commit_clear_lock(NFS_I(data->inode));
@@ -1534,7 +1537,7 @@ static void nfs_commit_release(void *calldata)
}
static const struct rpc_call_ops nfs_commit_ops = {
.rpc_call_prepare = nfs_write_prepare,
.rpc_call_prepare = nfs_commit_prepare,
.rpc_call_done = nfs_commit_done,
.rpc_release = nfs_commit_release,
};
@@ -1753,6 +1756,13 @@ int __init nfs_init_writepagecache(void)
if (nfs_wdata_mempool == NULL)
return -ENOMEM;
nfs_cdata_cachep = kmem_cache_create("nfs_commit_data",
sizeof(struct nfs_commit_data),
0, SLAB_HWCACHE_ALIGN,
NULL);
if (nfs_cdata_cachep == NULL)
return -ENOMEM;
nfs_commit_mempool = mempool_create_slab_pool(MIN_POOL_COMMIT,
nfs_wdata_cachep);
if (nfs_commit_mempool == NULL)