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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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65
fs/nfs/nfs4filelayout.c
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@@ -250,7 +250,7 @@ static int filelayout_write_done_cb(struct rpc_task *task,
}
/* Fake up some data that will cause nfs_commit_release to retry the writes. */
static void prepare_to_resend_writes(struct nfs_write_data *data)
static void prepare_to_resend_writes(struct nfs_commit_data *data)
{
struct nfs_page *first = nfs_list_entry(data->pages.next);
@@ -261,11 +261,11 @@ static void prepare_to_resend_writes(struct nfs_write_data *data)
}
static int filelayout_commit_done_cb(struct rpc_task *task,
struct nfs_write_data *data)
struct nfs_commit_data *data)
{
int reset = 0;
if (filelayout_async_handle_error(task, data->args.context->state,
if (filelayout_async_handle_error(task, data->context->state,
data->ds_clp, &reset) == -EAGAIN) {
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
@@ -315,15 +315,42 @@ static void filelayout_write_release(void *data)
wdata->mds_ops->rpc_release(data);
}
static void filelayout_commit_release(void *data)
static void filelayout_commit_prepare(struct rpc_task *task, void *data)
{
struct nfs_write_data *wdata = (struct nfs_write_data *)data;
struct nfs_commit_data *wdata = data;
nfs_commit_release_pages(wdata);
if (atomic_dec_and_test(&NFS_I(wdata->inode)->commits_outstanding))
nfs_commit_clear_lock(NFS_I(wdata->inode));
put_lseg(wdata->lseg);
nfs_commitdata_release(wdata);
if (nfs41_setup_sequence(wdata->ds_clp->cl_session,
&wdata->args.seq_args, &wdata->res.seq_res,
task))
return;
rpc_call_start(task);
}
static void filelayout_write_commit_done(struct rpc_task *task, void *data)
{
struct nfs_commit_data *wdata = data;
/* Note this may cause RPC to be resent */
wdata->mds_ops->rpc_call_done(task, data);
}
static void filelayout_commit_count_stats(struct rpc_task *task, void *data)
{
struct nfs_commit_data *cdata = data;
rpc_count_iostats(task, NFS_SERVER(cdata->inode)->client->cl_metrics);
}
static void filelayout_commit_release(void *calldata)
{
struct nfs_commit_data *data = calldata;
nfs_commit_release_pages(data);
if (atomic_dec_and_test(&NFS_I(data->inode)->commits_outstanding))
nfs_commit_clear_lock(NFS_I(data->inode));
put_lseg(data->lseg);
nfs_commitdata_release(data);
}
static const struct rpc_call_ops filelayout_read_call_ops = {
@@ -341,9 +368,9 @@ static const struct rpc_call_ops filelayout_write_call_ops = {
};
static const struct rpc_call_ops filelayout_commit_call_ops = {
.rpc_call_prepare = filelayout_write_prepare,
.rpc_call_done = filelayout_write_call_done,
.rpc_count_stats = filelayout_write_count_stats,
.rpc_call_prepare = filelayout_commit_prepare,
.rpc_call_done = filelayout_write_commit_done,
.rpc_count_stats = filelayout_commit_count_stats,
.rpc_release = filelayout_commit_release,
};
@@ -922,7 +949,7 @@ select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i)
return flseg->fh_array[i];
}
static int filelayout_initiate_commit(struct nfs_write_data *data, int how)
static int filelayout_initiate_commit(struct nfs_commit_data *data, int how)
{
struct pnfs_layout_segment *lseg = data->lseg;
struct nfs4_pnfs_ds *ds;
@@ -941,12 +968,12 @@ static int filelayout_initiate_commit(struct nfs_write_data *data, int how)
return -EAGAIN;
}
dprintk("%s ino %lu, how %d\n", __func__, data->inode->i_ino, how);
data->write_done_cb = filelayout_commit_done_cb;
data->commit_done_cb = filelayout_commit_done_cb;
data->ds_clp = ds->ds_clp;
fh = select_ds_fh_from_commit(lseg, data->ds_commit_index);
if (fh)
data->args.fh = fh;
return nfs_initiate_commit(data, ds->ds_clp->cl_rpcclient,
return nfs_initiate_commit(ds->ds_clp->cl_rpcclient, data,
&filelayout_commit_call_ops, how);
}
@@ -1008,7 +1035,7 @@ alloc_ds_commits(struct inode *inode, struct list_head *list)
{
struct nfs4_fl_commit_info *fl_cinfo;
struct nfs4_fl_commit_bucket *bucket;
struct nfs_write_data *data;
struct nfs_commit_data *data;
int i, j;
unsigned int nreq = 0;
@@ -1044,7 +1071,7 @@ static int
filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
int how)
{
struct nfs_write_data *data, *tmp;
struct nfs_commit_data *data, *tmp;
LIST_HEAD(list);
unsigned int nreq = 0;
@@ -1071,7 +1098,7 @@ filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
list_del_init(&data->pages);
if (!data->lseg) {
nfs_init_commit(data, mds_pages, NULL);
nfs_initiate_commit(data, NFS_CLIENT(inode),
nfs_initiate_commit(NFS_CLIENT(inode), data,
data->mds_ops, how);
} else {
struct nfs4_fl_commit_info *fl_cinfo;