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NFS: Convert v4 into a module

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This patch exports symbols needed by the v4 module.  In addition, I also
switch over to using IS_ENABLED() to check if CONFIG_NFS_V4 or
CONFIG_NFS_V4_MODULE are set.

The module (nfs4.ko) will be created in the same directory as nfs.ko and
will be automatically loaded the first time you try to mount over NFS v4.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Bryan Schumaker 2012-07-30 16:05:25 -04:00 • committed by Trond Myklebust
parent 1c606fb74c
commit 89d77c8fa8
25 changed files with 155 additions and 116 deletions
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13
fs/nfs/write.c
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@ -84,6 +84,7 @@ struct nfs_write_header *nfs_writehdr_alloc(void)
}
return p;
}
EXPORT_SYMBOL_GPL(nfs_writehdr_alloc);
static struct nfs_write_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
@ -115,6 +116,7 @@ void nfs_writehdr_free(struct nfs_pgio_header *hdr)
struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
mempool_free(whdr, nfs_wdata_mempool);
}
EXPORT_SYMBOL_GPL(nfs_writehdr_free);
void nfs_writedata_release(struct nfs_write_data *wdata)
{
@ -131,6 +133,7 @@ void nfs_writedata_release(struct nfs_write_data *wdata)
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
}
EXPORT_SYMBOL_GPL(nfs_writedata_release);
static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)
{
@ -446,7 +449,7 @@ nfs_mark_request_dirty(struct nfs_page *req)
__set_page_dirty_nobuffers(req->wb_page);
}
#if IS_ENABLED(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
/**
* nfs_request_add_commit_list - add request to a commit list
* @req: pointer to a struct nfs_page
@ -636,7 +639,7 @@ out:
hdr->release(hdr);
}
#if IS_ENABLED(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static unsigned long
nfs_reqs_to_commit(struct nfs_commit_info *cinfo)
{
@ -1173,6 +1176,7 @@ int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
return nfs_flush_multi(desc, hdr);
return nfs_flush_one(desc, hdr);
}
EXPORT_SYMBOL_GPL(nfs_generic_flush);
static int nfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
{
@ -1298,7 +1302,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
return;
nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, resp->count);
#if IS_ENABLED(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
if (resp->verf->committed < argp->stable && task->tk_status >= 0) {
/* We tried a write call, but the server did not
* commit data to stable storage even though we
@ -1358,7 +1362,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
}
#if IS_ENABLED(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
{
int ret;
@ -1674,6 +1678,7 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
return nfs_commit_unstable_pages(inode, wbc);
}
EXPORT_SYMBOL_GPL(nfs_write_inode);
/*
* flush the inode to disk.