On 11/24/2014 04:45 PM, Trond Myklebust wrote:
> 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]
Are you using a special config option to enable the -Wmissing-prototypes flag? I haven't been able to hit this.
Anna
> 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,
> ^
>
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