On Fri, Nov 7, 2014 at 2:44 PM, Anna Schumaker
<Anna.Schumaker@xxxxxxxxxx> wrote:
> This patch adds support for using the NFS v4.2 operation ALLOCATE to
> preallocate data in a file.
>
> Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
> ---
> fs/nfs/inode.c | 1 +
> fs/nfs/nfs42.h | 1 +
> fs/nfs/nfs42proc.c | 58 ++++++++++++++++++++++++++++++++++++
> fs/nfs/nfs42xdr.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++
> fs/nfs/nfs4_fs.h | 1 +
> fs/nfs/nfs4file.c | 28 ++++++++++++++++++
> fs/nfs/nfs4proc.c | 3 +-
> fs/nfs/nfs4xdr.c | 1 +
> include/linux/nfs4.h | 1 +
> include/linux/nfs_fs_sb.h | 1 +
> include/linux/nfs_xdr.h | 14 +++++++++
> 11 files changed, 183 insertions(+), 1 deletion(-)
>
> diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
> index 00689a8..bfffc33 100644
> --- a/fs/nfs/inode.c
> +++ b/fs/nfs/inode.c
> @@ -192,6 +192,7 @@ void nfs_zap_caches(struct inode *inode)
> nfs_zap_caches_locked(inode);
> spin_unlock(&inode->i_lock);
> }
> +EXPORT_SYMBOL_GPL(nfs_zap_caches);
>
> void nfs_zap_mapping(struct inode *inode, struct address_space *mapping)
> {
> diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h
> index d10333a..42656a9 100644
> --- a/fs/nfs/nfs42.h
> +++ b/fs/nfs/nfs42.h
> @@ -6,6 +6,7 @@
> #define __LINUX_FS_NFS_NFS4_2_H
>
> /* nfs4.2proc.c */
> +int nfs42_proc_allocate(struct file *, loff_t, loff_t);
> loff_t nfs42_proc_llseek(struct file *, loff_t, int);
>
> /* nfs4.2xdr.h */
> diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
> index 0886f1d..5da6e8e 100644
> --- a/fs/nfs/nfs42proc.c
> +++ b/fs/nfs/nfs42proc.c
> @@ -32,6 +32,64 @@ static int nfs42_set_rw_stateid(nfs4_stateid *dst, struct file *file,
> return ret;
> }
>
> +int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
> + loff_t offset, loff_t len)
> +{
> + struct inode *inode = file_inode(filep);
> + struct nfs42_falloc_args args = {
> + .falloc_fh = NFS_FH(inode),
> + .falloc_offset = offset,
> + .falloc_length = len,
> + };
> + struct nfs42_falloc_res res;
> + struct nfs_server *server = NFS_SERVER(inode);
> + int status;
> +
> + msg->rpc_argp = &args;
> + msg->rpc_resp = &res;
> +
> + status = nfs42_set_rw_stateid(&args.falloc_stateid, filep, FMODE_WRITE);
> + if (status)
> + return status;
> +
> + return nfs4_call_sync(server->client, server, msg,
> + &args.seq_args, &res.seq_res, 0);
> +}
/home/trondmy/devel/kernel/linux-nfs/fs/nfs/nfs42proc.c:35:5: warning:
no previous prototype for ‘_nfs42_proc_fallocate’
[-Wmissing-prototypes]
int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
^
/home/trondmy/devel/kernel/linux-nfs/fs/nfs/nfs42proc.c:59:5: warning:
no previous prototype for ‘nfs42_proc_fallocate’
[-Wmissing-prototypes]
int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
^
--
Trond Myklebust
Linux NFS client maintainer, PrimaryData
trond.myklebust@xxxxxxxxxxxxxxx
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