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Diffstat (limited to 'fs/fuse/file.c')
-rw-r--r--fs/fuse/file.c48
1 files changed, 28 insertions, 20 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a9f5e137f1d3..ada0adeb3bb5 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -351,10 +351,9 @@ static void fuse_sync_writes(struct inode *inode)
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;
@@ -403,9 +402,9 @@ int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
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,
@@ -517,17 +516,26 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_req *req)
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];
@@ -536,6 +544,7 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_req *req)
else
SetPageError(page);
unlock_page(page);
+ page_cache_release(page);
}
if (req->ff)
fuse_file_put(req->ff);
@@ -550,6 +559,7 @@ static void fuse_send_readpages(struct fuse_req *req, struct file *file)
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) {
@@ -589,6 +599,7 @@ static int fuse_readpages_fill(void *_data, struct page *page)
return PTR_ERR(req);
}
}
+ page_cache_get(page);
req->pages[req->num_pages] = page;
req->num_pages++;
return 0;
@@ -994,10 +1005,7 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf,
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(&current->mm->mmap_sem);
- npages = get_user_pages(current, current->mm, user_addr, npages, !write,
- 0, req->pages, NULL);
- up_read(&current->mm->mmap_sem);
+ npages = get_user_pages_fast(user_addr, npages, !write, req->pages);
if (npages < 0)
return npages;
@@ -1580,9 +1588,9 @@ static int fuse_ioctl_copy_user(struct page **pages, struct iovec *iov,
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;