Factors out the code that needs to change when directio
starts using these code paths.
Signed-off-by: Fred Isaman <iisaman@xxxxxxxxxx>
---
fs/nfs/internal.h | 5 ++---
fs/nfs/nfs4filelayout.c | 12 ++++--------
fs/nfs/write.c | 31 +++++++++++++++++++++----------
include/linux/nfs_xdr.h | 9 +++++++++
4 files changed, 36 insertions(+), 21 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 53d148b..3d45213 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -344,13 +344,12 @@ extern int nfs_initiate_commit(struct rpc_clnt *clnt,
int how);
extern void nfs_init_commit(struct nfs_commit_data *data,
struct list_head *head,
- struct pnfs_layout_segment *lseg);
+ struct pnfs_layout_segment *lseg,
+ struct nfs_commit_info *cinfo);
void nfs_retry_commit(struct list_head *page_list,
struct pnfs_layout_segment *lseg,
struct nfs_commit_info *cinfo);
-void nfs_commit_clear_lock(struct nfs_inode *nfsi);
void nfs_commitdata_release(struct nfs_commit_data *data);
-void nfs_commit_release_pages(struct nfs_commit_data *data);
void nfs_request_add_commit_list(struct nfs_page *req, struct list_head *dst,
struct nfs_commit_info *cinfo);
void nfs_request_remove_commit_list(struct nfs_page *req,
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index fe2cb55..26d1da4 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -347,12 +347,8 @@ static void filelayout_commit_count_stats(struct rpc_task *task, void *data)
static void filelayout_commit_release(void *calldata)
{
struct nfs_commit_data *data = calldata;
- struct nfs_commit_info cinfo;
- nfs_commit_release_pages(data);
- nfs_init_cinfo(&cinfo, data->inode, data->dreq);
- if (atomic_dec_and_test(&cinfo.mds->rpcs_out))
- nfs_commit_clear_lock(NFS_I(data->inode));
+ data->completion_ops->completion(data);
put_lseg(data->lseg);
nfs_commitdata_release(data);
}
@@ -1108,7 +1104,7 @@ filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
nreq += alloc_ds_commits(cinfo, &list);
if (nreq == 0) {
- nfs_commit_clear_lock(NFS_I(inode));
+ cinfo->completion_ops->error_cleanup(NFS_I(inode));
goto out;
}
@@ -1117,14 +1113,14 @@ filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
list_for_each_entry_safe(data, tmp, &list, pages) {
list_del_init(&data->pages);
if (!data->lseg) {
- nfs_init_commit(data, mds_pages, NULL);
+ nfs_init_commit(data, mds_pages, NULL, cinfo);
nfs_initiate_commit(NFS_CLIENT(inode), data,
data->mds_ops, how);
} else {
struct pnfs_commit_bucket *buckets;
buckets = cinfo->ds->buckets;
- nfs_init_commit(data, &buckets[data->ds_commit_index].committing, data->lseg);
+ nfs_init_commit(data, &buckets[data->ds_commit_index].committing, data->lseg, cinfo);
filelayout_initiate_commit(data, how);
}
}
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 18bf700..333d01d 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -46,6 +46,7 @@ static void nfs_redirty_request(struct nfs_page *req);
static const struct rpc_call_ops nfs_write_common_ops;
static const struct rpc_call_ops nfs_commit_ops;
static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops;
+static const struct nfs_commit_completion_ops nfs_commit_completion_ops;
static struct kmem_cache *nfs_wdata_cachep;
static mempool_t *nfs_wdata_mempool;
@@ -505,6 +506,7 @@ static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo,
cinfo->lock = &inode->i_lock;
cinfo->mds = &NFS_I(inode)->commit_info;
cinfo->ds = pnfs_get_ds_info(inode);
+ cinfo->completion_ops = &nfs_commit_completion_ops;
}
void nfs_init_cinfo(struct nfs_commit_info *cinfo,
@@ -1358,13 +1360,12 @@ static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
return (ret < 0) ? ret : 1;
}
-void nfs_commit_clear_lock(struct nfs_inode *nfsi)
+static void nfs_commit_clear_lock(struct nfs_inode *nfsi)
{
clear_bit(NFS_INO_COMMIT, &nfsi->flags);
smp_mb__after_clear_bit();
wake_up_bit(&nfsi->flags, NFS_INO_COMMIT);
}
-EXPORT_SYMBOL_GPL(nfs_commit_clear_lock);
void nfs_commitdata_release(struct nfs_commit_data *data)
{
@@ -1413,8 +1414,9 @@ EXPORT_SYMBOL_GPL(nfs_initiate_commit);
* Set up the argument/result storage required for the RPC call.
*/
void nfs_init_commit(struct nfs_commit_data *data,
- struct list_head *head,
- struct pnfs_layout_segment *lseg)
+ struct list_head *head,
+ struct pnfs_layout_segment *lseg,
+ struct nfs_commit_info *cinfo)
{
struct nfs_page *first = nfs_list_entry(head->next);
struct inode *inode = first->wb_context->dentry->d_inode;
@@ -1428,6 +1430,7 @@ void nfs_init_commit(struct nfs_commit_data *data,
data->cred = first->wb_context->cred;
data->lseg = lseg; /* reference transferred */
data->mds_ops = &nfs_commit_ops;
+ data->completion_ops = cinfo->completion_ops;
data->args.fh = NFS_FH(data->inode);
/* Note: we always request a commit of the entire inode */
@@ -1473,11 +1476,12 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
goto out_bad;
/* Set up the argument struct */
- nfs_init_commit(data, head, NULL);
+ nfs_init_commit(data, head, NULL, cinfo);
+ atomic_inc(&cinfo->mds->rpcs_out);
return nfs_initiate_commit(NFS_CLIENT(inode), data, data->mds_ops, how);
out_bad:
nfs_retry_commit(head, NULL, cinfo);
- nfs_commit_clear_lock(NFS_I(inode));
+ cinfo->completion_ops->error_cleanup(NFS_I(inode));
return -ENOMEM;
}
@@ -1495,10 +1499,11 @@ 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_commit_data *data)
+static void nfs_commit_release_pages(struct nfs_commit_data *data)
{
struct nfs_page *req;
int status = data->task.tk_status;
+ struct nfs_commit_info cinfo;
while (!list_empty(&data->pages)) {
req = nfs_list_entry(data->pages.next);
@@ -1531,15 +1536,16 @@ void nfs_commit_release_pages(struct nfs_commit_data *data)
next:
nfs_unlock_request(req);
}
+ nfs_init_cinfo(&cinfo, data->inode, data->dreq);
+ if (atomic_dec_and_test(&cinfo.mds->rpcs_out))
+ nfs_commit_clear_lock(NFS_I(data->inode));
}
-EXPORT_SYMBOL_GPL(nfs_commit_release_pages);
static void nfs_commit_release(void *calldata)
{
struct nfs_commit_data *data = calldata;
- nfs_commit_release_pages(data);
- nfs_commit_clear_lock(NFS_I(data->inode));
+ data->completion_ops->completion(data);
nfs_commitdata_release(calldata);
}
@@ -1549,6 +1555,11 @@ static const struct rpc_call_ops nfs_commit_ops = {
.rpc_release = nfs_commit_release,
};
+static const struct nfs_commit_completion_ops nfs_commit_completion_ops = {
+ .completion = nfs_commit_release_pages,
+ .error_cleanup = nfs_commit_clear_lock,
+};
+
static int nfs_generic_commit_list(struct inode *inode, struct list_head *head,
int how, struct nfs_commit_info *cinfo)
{
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 2884ced..756152f 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1258,10 +1258,18 @@ struct nfs_mds_commit_info {
struct list_head list;
};
+struct nfs_commit_data;
+struct nfs_inode;
+struct nfs_commit_completion_ops {
+ void (*error_cleanup) (struct nfs_inode *nfsi);
+ void (*completion) (struct nfs_commit_data *data);
+};
+
struct nfs_commit_info {
spinlock_t *lock;
struct nfs_mds_commit_info *mds;
struct pnfs_ds_commit_info *ds;
+ const struct nfs_commit_completion_ops *completion_ops;
};
struct nfs_commit_data {
@@ -1280,6 +1288,7 @@ struct nfs_commit_data {
struct nfs_client *ds_clp; /* pNFS data server */
int ds_commit_index;
const struct rpc_call_ops *mds_ops;
+ const struct nfs_commit_completion_ops *completion_ops;
int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
};
--
1.7.2.1
--
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