#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/sched.h>
+#include <linux/module.h>
static const struct file_operations fuse_direct_io_file_operations;
}
}
-static int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
- bool isdir)
+int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
+ bool isdir)
{
struct fuse_open_out outarg;
struct fuse_file *ff;
return 0;
}
+EXPORT_SYMBOL_GPL(fuse_do_open);
void fuse_finish_open(struct inode *inode, struct file *file)
{
fuse_put_request(ff->fc, ff->reserved_req);
kfree(ff);
}
+EXPORT_SYMBOL_GPL(fuse_sync_release);
/*
* Scramble the ID space with XTEA, so that the value of the files_struct
fuse_release_nowrite(inode);
}
-int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
- int isdir)
+int fuse_fsync_common(struct file *file, int datasync, int isdir)
{
- struct inode *inode = de->d_inode;
+ struct inode *inode = file->f_mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_req *req;
return err;
}
-static int fuse_fsync(struct file *file, struct dentry *de, int datasync)
+static int fuse_fsync(struct file *file, int datasync)
{
- return fuse_fsync_common(file, de, datasync, 0);
+ return fuse_fsync_common(file, datasync, 0);
}
void fuse_read_fill(struct fuse_req *req, struct file *file, loff_t pos,
int i;
size_t count = req->misc.read.in.size;
size_t num_read = req->out.args[0].size;
- struct inode *inode = req->pages[0]->mapping->host;
+ struct address_space *mapping = NULL;
- /*
- * Short read means EOF. If file size is larger, truncate it
- */
- if (!req->out.h.error && num_read < count) {
- loff_t pos = page_offset(req->pages[0]) + num_read;
- fuse_read_update_size(inode, pos, req->misc.read.attr_ver);
- }
+ for (i = 0; mapping == NULL && i < req->num_pages; i++)
+ mapping = req->pages[i]->mapping;
- fuse_invalidate_attr(inode); /* atime changed */
+ if (mapping) {
+ struct inode *inode = mapping->host;
+
+ /*
+ * Short read means EOF. If file size is larger, truncate it
+ */
+ if (!req->out.h.error && num_read < count) {
+ loff_t pos;
+
+ pos = page_offset(req->pages[0]) + num_read;
+ fuse_read_update_size(inode, pos,
+ req->misc.read.attr_ver);
+ }
+ fuse_invalidate_attr(inode); /* atime changed */
+ }
for (i = 0; i < req->num_pages; i++) {
struct page *page = req->pages[i];
else
SetPageError(page);
unlock_page(page);
+ page_cache_release(page);
}
if (req->ff)
fuse_file_put(req->ff);
req->out.argpages = 1;
req->out.page_zeroing = 1;
+ req->out.page_replace = 1;
fuse_read_fill(req, file, pos, count, FUSE_READ);
req->misc.read.attr_ver = fuse_get_attr_version(fc);
if (fc->async_read) {
return PTR_ERR(req);
}
}
+ page_cache_get(page);
req->pages[req->num_pages] = page;
req->num_pages++;
return 0;
if (!page)
break;
+ if (mapping_writably_mapped(mapping))
+ flush_dcache_page(page);
+
pagefault_disable();
tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
pagefault_enable();
nbytes = min_t(size_t, nbytes, FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT);
npages = (nbytes + offset + PAGE_SIZE - 1) >> PAGE_SHIFT;
npages = clamp(npages, 1, FUSE_MAX_PAGES_PER_REQ);
- down_read(¤t->mm->mmap_sem);
- npages = get_user_pages(current, current->mm, user_addr, npages, !write,
- 0, req->pages, NULL);
- up_read(¤t->mm->mmap_sem);
+ npages = get_user_pages_fast(user_addr, npages, !write, req->pages);
if (npages < 0)
return npages;
return 0;
}
-static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos, int write)
+ssize_t fuse_direct_io(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos, int write)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
break;
}
}
- fuse_put_request(fc, req);
+ if (!IS_ERR(req))
+ fuse_put_request(fc, req);
if (res > 0)
*ppos = pos;
return res;
}
+EXPORT_SYMBOL_GPL(fuse_direct_io);
static ssize_t fuse_direct_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
return 0;
}
-static struct vm_operations_struct fuse_file_vm_ops = {
+static const struct vm_operations_struct fuse_file_vm_ops = {
.close = fuse_vma_close,
.fault = filemap_fault,
.page_mkwrite = fuse_page_mkwrite,
while (iov_iter_count(&ii)) {
struct page *page = pages[page_idx++];
size_t todo = min_t(size_t, PAGE_SIZE, iov_iter_count(&ii));
- void *kaddr, *map;
+ void *kaddr;
- kaddr = map = kmap(page);
+ kaddr = kmap(page);
while (todo) {
char __user *uaddr = ii.iov->iov_base + ii.iov_offset;
kaddr += copy;
}
- kunmap(map);
+ kunmap(page);
}
return 0;
* limits ioctl data transfers to well-formed ioctls and is the forced
* behavior for all FUSE servers.
*/
-static long fuse_do_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg, unsigned int flags)
+long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
+ unsigned int flags)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
return err ? err : outarg.result;
}
+EXPORT_SYMBOL_GPL(fuse_do_ioctl);
static long fuse_file_ioctl_common(struct file *file, unsigned int cmd,
unsigned long arg, unsigned int flags)
spin_unlock(&fc->lock);
}
-static unsigned fuse_file_poll(struct file *file, poll_table *wait)
+unsigned fuse_file_poll(struct file *file, poll_table *wait)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
req = fuse_get_req(fc);
if (IS_ERR(req))
- return PTR_ERR(req);
+ return POLLERR;
req->in.h.opcode = FUSE_POLL;
req->in.h.nodeid = ff->nodeid;
}
return POLLERR;
}
+EXPORT_SYMBOL_GPL(fuse_file_poll);
/*
* This is called from fuse_handle_notify() on FUSE_NOTIFY_POLL and
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff