Commit 650b22b9 authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by Miklos Szeredi

fuse: Linking file to inode helper

When writeback is ON every writeable file should be in per-inode write list,
not only mmap-ed ones. Thus introduce a helper for this linkage.
Signed-off-by: default avatarMaxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
parent 455c6fdb
...@@ -188,6 +188,22 @@ int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, ...@@ -188,6 +188,22 @@ int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
} }
EXPORT_SYMBOL_GPL(fuse_do_open); EXPORT_SYMBOL_GPL(fuse_do_open);
static void fuse_link_write_file(struct file *file)
{
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_inode *fi = get_fuse_inode(inode);
struct fuse_file *ff = file->private_data;
/*
* file may be written through mmap, so chain it onto the
* inodes's write_file list
*/
spin_lock(&fc->lock);
if (list_empty(&ff->write_entry))
list_add(&ff->write_entry, &fi->write_files);
spin_unlock(&fc->lock);
}
void fuse_finish_open(struct inode *inode, struct file *file) void fuse_finish_open(struct inode *inode, struct file *file)
{ {
struct fuse_file *ff = file->private_data; struct fuse_file *ff = file->private_data;
...@@ -1946,20 +1962,9 @@ static const struct vm_operations_struct fuse_file_vm_ops = { ...@@ -1946,20 +1962,9 @@ static const struct vm_operations_struct fuse_file_vm_ops = {
static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma)
{ {
if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE)) { if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE))
struct inode *inode = file_inode(file); fuse_link_write_file(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_inode *fi = get_fuse_inode(inode);
struct fuse_file *ff = file->private_data;
/*
* file may be written through mmap, so chain it onto the
* inodes's write_file list
*/
spin_lock(&fc->lock);
if (list_empty(&ff->write_entry))
list_add(&ff->write_entry, &fi->write_files);
spin_unlock(&fc->lock);
}
file_accessed(file); file_accessed(file);
vma->vm_ops = &fuse_file_vm_ops; vma->vm_ops = &fuse_file_vm_ops;
return 0; return 0;
......
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