diff options
Diffstat (limited to 'fs/nfs/nfs42proc.c')
| -rw-r--r-- | fs/nfs/nfs42proc.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 5cf52ece96ac..01c01f45358b 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -146,7 +146,8 @@ int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) err = nfs42_proc_fallocate(&msg, filep, offset, len); if (err == -EOPNOTSUPP) - NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE; + NFS_SERVER(inode)->caps &= ~(NFS_CAP_ALLOCATE | + NFS_CAP_ZERO_RANGE); inode_unlock(inode); return err; @@ -169,7 +170,31 @@ int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) if (err == 0) truncate_pagecache_range(inode, offset, (offset + len) -1); if (err == -EOPNOTSUPP) - NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; + NFS_SERVER(inode)->caps &= ~(NFS_CAP_DEALLOCATE | + NFS_CAP_ZERO_RANGE); + + inode_unlock(inode); + return err; +} + +int nfs42_proc_zero_range(struct file *filep, loff_t offset, loff_t len) +{ + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ZERO_RANGE], + }; + struct inode *inode = file_inode(filep); + int err; + + if (!nfs_server_capable(inode, NFS_CAP_ZERO_RANGE)) + return -EOPNOTSUPP; + + inode_lock(inode); + + err = nfs42_proc_fallocate(&msg, filep, offset, len); + if (err == 0) + truncate_pagecache_range(inode, offset, (offset + len) -1); + if (err == -EOPNOTSUPP) + NFS_SERVER(inode)->caps &= ~NFS_CAP_ZERO_RANGE; inode_unlock(inode); return err; |