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| author | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-11-07 20:44:26 +0100 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-11-07 22:19:49 +0100 |
| commit | 95d871f03cae6b49de040265cf88cbe2a16b9f05 (patch) | |
| tree | 911d8bed4226e4e87e1411145c7fe0e275dea545 /fs/nfsd/vfs.c | |
| parent | VFS: Rename do_fallocate() to vfs_fallocate() (diff) | |
| download | linux-95d871f03cae6b49de040265cf88cbe2a16b9f05.tar.xz linux-95d871f03cae6b49de040265cf88cbe2a16b9f05.zip | |
nfsd: Add ALLOCATE support
The ALLOCATE operation is used to preallocate space in a file. I can do
this by using vfs_fallocate() to do the actual preallocation.
ALLOCATE only returns a status indicator, so we don't need to write a
special encode() function.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
| -rw-r--r-- | fs/nfsd/vfs.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index d16076bd9a7a..f1999619d516 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -16,6 +16,7 @@ #include <linux/fs.h> #include <linux/file.h> #include <linux/splice.h> +#include <linux/falloc.h> #include <linux/fcntl.h> #include <linux/namei.h> #include <linux/delay.h> @@ -533,6 +534,26 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp, } #endif +__be32 nfsd4_vfs_fallocate(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct file *file, loff_t offset, loff_t len, + int flags) +{ + __be32 err; + int error; + + if (!S_ISREG(file_inode(file)->i_mode)) + return nfserr_inval; + + err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, NFSD_MAY_WRITE); + if (err) + return err; + + error = vfs_fallocate(file, flags, offset, len); + if (!error) + error = commit_metadata(fhp); + + return nfserrno(error); +} #endif /* defined(CONFIG_NFSD_V4) */ #ifdef CONFIG_NFSD_V3 |