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| author | Anna Schumaker <Anna.Schumaker@netapp.com> | 2014-11-25 13:18:16 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-11-25 16:38:32 -0500 |
| commit | 624bd5b7b683c978c6d5f4e9f6142cfb3470983d (patch) | |
| tree | dcbe9728ea9a6ef12b57c63aec6b34b872a42542 /fs/nfs/nfs42proc.c | |
| parent | f4ac1674f5da420ef17896f0f222c5215ebcde80 (diff) | |
| download | linux-stable-624bd5b7b683c978c6d5f4e9f6142cfb3470983d.tar.gz linux-stable-624bd5b7b683c978c6d5f4e9f6142cfb3470983d.tar.bz2 linux-stable-624bd5b7b683c978c6d5f4e9f6142cfb3470983d.zip | |
nfs: Add DEALLOCATE support
This patch adds support for using the NFS v4.2 operation DEALLOCATE to
punch holes in a file.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/nfs42proc.c')
| -rw-r--r-- | fs/nfs/nfs42proc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 581f34e9d8a0..cb170722769c 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -90,6 +90,23 @@ int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) return err; } +int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) +{ + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE], + }; + struct inode *inode = file_inode(filep); + int err; + + if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE)) + return -EOPNOTSUPP; + + err = nfs42_proc_fallocate(&msg, filep, offset, len); + if (err == -EOPNOTSUPP) + NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; + return err; +} + loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) { struct inode *inode = file_inode(filep); |