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fuse: don't use inode in helpers called by fuse_direct_io() 

Use ff->fc and ff->nodeid instead of passing down the inode.

This prepares this function for use by CUSE, where the inode is not
owned by a fuse filesystem.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2009-04-28 16:56:37 +02:00
parent da5e471457
commit 2106cb1893
3 changed files with 32 additions and 34 deletions
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2
fs/fuse/dir.c
View File

@ -1035,7 +1035,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
req->out.argpages = 1;
req->num_pages = 1;
req->pages[0] = page;
fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR);
fuse_read_fill(req, file, file->f_pos, PAGE_SIZE, FUSE_READDIR);
fuse_request_send(fc, req);
nbytes = req->out.args[0].size;
err = req->out.h.error;

62
fs/fuse/file.c
View File

@ -379,8 +379,8 @@ static int fuse_fsync(struct file *file, struct dentry *de, int datasync)
return fuse_fsync_common(file, de, datasync, 0);
}
void fuse_read_fill(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos, size_t count, int opcode)
void fuse_read_fill(struct fuse_req *req, struct file *file, loff_t pos,
size_t count, int opcode)
{
struct fuse_read_in *inarg = &req->misc.read.in;
struct fuse_file *ff = file->private_data;
@ -390,7 +390,7 @@ void fuse_read_fill(struct fuse_req *req, struct file *file,
inarg->size = count;
inarg->flags = file->f_flags;
req->in.h.opcode = opcode;
req->in.h.nodeid = get_node_id(inode);
req->in.h.nodeid = ff->nodeid;
req->in.numargs = 1;
req->in.args[0].size = sizeof(struct fuse_read_in);
req->in.args[0].value = inarg;
@ -400,12 +400,12 @@ void fuse_read_fill(struct fuse_req *req, struct file *file,
}
static size_t fuse_send_read(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos, size_t count,
fl_owner_t owner)
loff_t pos, size_t count, fl_owner_t owner)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
fuse_read_fill(req, file, inode, pos, count, FUSE_READ);
fuse_read_fill(req, file, pos, count, FUSE_READ);
if (owner != NULL) {
struct fuse_read_in *inarg = &req->misc.read.in;
@ -463,7 +463,7 @@ static int fuse_readpage(struct file *file, struct page *page)
req->out.argpages = 1;
req->num_pages = 1;
req->pages[0] = page;
num_read = fuse_send_read(req, file, inode, pos, count, NULL);
num_read = fuse_send_read(req, file, pos, count, NULL);
err = req->out.h.error;
fuse_put_request(fc, req);
@ -512,19 +512,18 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_req *req)
fuse_file_put(req->ff);
}
static void fuse_send_readpages(struct fuse_req *req, struct file *file,
struct inode *inode)
static void fuse_send_readpages(struct fuse_req *req, struct file *file)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
loff_t pos = page_offset(req->pages[0]);
size_t count = req->num_pages << PAGE_CACHE_SHIFT;
req->out.argpages = 1;
req->out.page_zeroing = 1;
fuse_read_fill(req, file, inode, pos, count, FUSE_READ);
fuse_read_fill(req, file, pos, count, FUSE_READ);
req->misc.read.attr_ver = fuse_get_attr_version(fc);
if (fc->async_read) {
struct fuse_file *ff = file->private_data;
req->ff = fuse_file_get(ff);
req->end = fuse_readpages_end;
fuse_request_send_background(fc, req);
@ -554,7 +553,7 @@ static int fuse_readpages_fill(void *_data, struct page *page)
(req->num_pages == FUSE_MAX_PAGES_PER_REQ ||
(req->num_pages + 1) * PAGE_CACHE_SIZE > fc->max_read ||
req->pages[req->num_pages - 1]->index + 1 != page->index)) {
fuse_send_readpages(req, data->file, inode);
fuse_send_readpages(req, data->file);
data->req = req = fuse_get_req(fc);
if (IS_ERR(req)) {
unlock_page(page);
@ -588,7 +587,7 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data);
if (!err) {
if (data.req->num_pages)
fuse_send_readpages(data.req, file, inode);
fuse_send_readpages(data.req, file);
else
fuse_put_request(fc, data.req);
}
@ -616,9 +615,8 @@ static ssize_t fuse_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
}
static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff,
struct inode *inode, loff_t pos, size_t count)
loff_t pos, size_t count)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_write_in *inarg = &req->misc.write.in;
struct fuse_write_out *outarg = &req->misc.write.out;
@ -626,9 +624,9 @@ static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff,
inarg->offset = pos;
inarg->size = count;
req->in.h.opcode = FUSE_WRITE;
req->in.h.nodeid = get_node_id(inode);
req->in.h.nodeid = ff->nodeid;
req->in.numargs = 2;
if (fc->minor < 9)
if (ff->fc->minor < 9)
req->in.args[0].size = FUSE_COMPAT_WRITE_IN_SIZE;
else
req->in.args[0].size = sizeof(struct fuse_write_in);
@ -640,13 +638,13 @@ static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff,
}
static size_t fuse_send_write(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos, size_t count,
fl_owner_t owner)
loff_t pos, size_t count, fl_owner_t owner)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_write_in *inarg = &req->misc.write.in;
fuse_write_fill(req, file->private_data, inode, pos, count);
fuse_write_fill(req, ff, pos, count);
inarg->flags = file->f_flags;
if (owner != NULL) {
inarg->write_flags |= FUSE_WRITE_LOCKOWNER;
@ -706,7 +704,7 @@ static int fuse_buffered_write(struct file *file, struct inode *inode,
req->num_pages = 1;
req->pages[0] = page;
req->page_offset = offset;
nres = fuse_send_write(req, file, inode, pos, count, NULL);
nres = fuse_send_write(req, file, pos, count, NULL);
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err && !nres)
@ -747,7 +745,7 @@ static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file,
for (i = 0; i < req->num_pages; i++)
fuse_wait_on_page_writeback(inode, req->pages[i]->index);
res = fuse_send_write(req, file, inode, pos, count, NULL);
res = fuse_send_write(req, file, pos, count, NULL);
offset = req->page_offset;
count = res;
@ -988,8 +986,8 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf,
static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
size_t count, loff_t *ppos, int write)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
size_t nmax = write ? fc->max_write : fc->max_read;
loff_t pos = *ppos;
ssize_t res = 0;
@ -1001,6 +999,7 @@ static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
while (count) {
size_t nres;
fl_owner_t owner = current->files;
size_t nbytes = min(count, nmax);
int err = fuse_get_user_pages(req, buf, &nbytes, write);
if (err) {
@ -1009,11 +1008,10 @@ static ssize_t fuse_direct_io(struct file *file, const char __user *buf,
}
if (write)
nres = fuse_send_write(req, file, inode, pos, nbytes,
current->files);
nres = fuse_send_write(req, file, pos, nbytes, owner);
else
nres = fuse_send_read(req, file, inode, pos, nbytes,
current->files);
nres = fuse_send_read(req, file, pos, nbytes, owner);
fuse_release_user_pages(req, !write);
if (req->out.h.error) {
if (!res)
@ -1196,7 +1194,7 @@ static int fuse_writepage_locked(struct page *page)
req->ff = fuse_file_get(ff);
spin_unlock(&fc->lock);
fuse_write_fill(req, ff, inode, page_offset(page), 0);
fuse_write_fill(req, ff, page_offset(page), 0);
copy_highpage(tmp_page, page);
req->misc.write.in.write_flags |= FUSE_WRITE_CACHE;

2
fs/fuse/fuse_i.h
View File

@ -520,7 +520,7 @@ void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
* Initialize READ or READDIR request
*/
void fuse_read_fill(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos, size_t count, int opcode);
loff_t pos, size_t count, int opcode);
/**
* Send OPEN or OPENDIR request