if (!status) {
status = ctx->error;
ctx->error = 0;
- if (!status && !nfs_have_delegation(inode, FMODE_READ))
- __nfs_revalidate_inode(NFS_SERVER(inode), inode);
+ if (!status)
+ nfs_revalidate_inode(NFS_SERVER(inode), inode);
}
unlock_kernel();
return status;
static int do_getlk(struct file *filp, int cmd, struct file_lock *fl)
{
+ struct file_lock *cfl;
struct inode *inode = filp->f_mapping->host;
int status = 0;
lock_kernel();
- /* Use local locking if mounted with "-onolock" */
- if (!(NFS_SERVER(inode)->flags & NFS_MOUNT_NONLM))
- status = NFS_PROTO(inode)->lock(filp, cmd, fl);
- else {
- struct file_lock *cfl = posix_test_lock(filp, fl);
-
- fl->fl_type = F_UNLCK;
- if (cfl != NULL)
- memcpy(fl, cfl, sizeof(*fl));
+ /* Try local locking first */
+ cfl = posix_test_lock(filp, fl);
+ if (cfl != NULL) {
+ locks_copy_lock(fl, cfl);
+ goto out;
}
+
+ if (nfs_have_delegation(inode, FMODE_READ))
+ goto out_noconflict;
+
+ if (NFS_SERVER(inode)->flags & NFS_MOUNT_NONLM)
+ goto out_noconflict;
+
+ status = NFS_PROTO(inode)->lock(filp, cmd, fl);
+out:
unlock_kernel();
return status;
+out_noconflict:
+ fl->fl_type = F_UNLCK;
+ goto out;
}
static int do_vfs_lock(struct file *file, struct file_lock *fl)
* Flush all pending writes before doing anything
* with locks..
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode);
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
/* NOTE: special case
* If we're signalled while cleaning up locks on process exit, we
* Flush all pending writes before doing anything
* with locks..
*/
- status = filemap_fdatawrite(filp->f_mapping);
- if (status == 0) {
- down(&inode->i_sem);
- status = nfs_wb_all(inode);
- up(&inode->i_sem);
- if (status == 0)
- status = filemap_fdatawait(filp->f_mapping);
- }
- if (status < 0)
+ status = nfs_sync_mapping(filp->f_mapping);
+ if (status != 0)
goto out;
lock_kernel();
* Make sure we clear the cache whenever we try to get the lock.
* This makes locking act as a cache coherency point.
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode); /* we may have slept */
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
nfs_zap_caches(inode);
out:
rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
return -EINVAL;
/* No mandatory locks over NFS */
- if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID)
+ if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
+ fl->fl_type != F_UNLCK)
return -ENOLCK;
if (IS_GETLK(cmd))