#include <linux/syscalls.h>
#include <linux/uio.h>
#include <linux/security.h>
+#include <linux/gfp.h>
/*
* Attempt to steal a page from a pipe buffer. This should perhaps go into
break;
}
- if (pipe->nrbufs < PIPE_BUFFERS) {
- int newbuf = (pipe->curbuf + pipe->nrbufs) & (PIPE_BUFFERS - 1);
+ if (pipe->nrbufs < pipe->buffers) {
+ int newbuf = (pipe->curbuf + pipe->nrbufs) & (pipe->buffers - 1);
struct pipe_buffer *buf = pipe->bufs + newbuf;
buf->page = spd->pages[page_nr];
if (!--spd->nr_pages)
break;
- if (pipe->nrbufs < PIPE_BUFFERS)
+ if (pipe->nrbufs < pipe->buffers)
continue;
break;
page_cache_release(spd->pages[i]);
}
+/*
+ * Check if we need to grow the arrays holding pages and partial page
+ * descriptions.
+ */
+int splice_grow_spd(struct pipe_inode_info *pipe, struct splice_pipe_desc *spd)
+{
+ if (pipe->buffers <= PIPE_DEF_BUFFERS)
+ return 0;
+
+ spd->pages = kmalloc(pipe->buffers * sizeof(struct page *), GFP_KERNEL);
+ spd->partial = kmalloc(pipe->buffers * sizeof(struct partial_page), GFP_KERNEL);
+
+ if (spd->pages && spd->partial)
+ return 0;
+
+ kfree(spd->pages);
+ kfree(spd->partial);
+ return -ENOMEM;
+}
+
+void splice_shrink_spd(struct pipe_inode_info *pipe,
+ struct splice_pipe_desc *spd)
+{
+ if (pipe->buffers <= PIPE_DEF_BUFFERS)
+ return;
+
+ kfree(spd->pages);
+ kfree(spd->partial);
+}
+
static int
__generic_file_splice_read(struct file *in, loff_t *ppos,
struct pipe_inode_info *pipe, size_t len,
{
struct address_space *mapping = in->f_mapping;
unsigned int loff, nr_pages, req_pages;
- struct page *pages[PIPE_BUFFERS];
- struct partial_page partial[PIPE_BUFFERS];
+ struct page *pages[PIPE_DEF_BUFFERS];
+ struct partial_page partial[PIPE_DEF_BUFFERS];
struct page *page;
pgoff_t index, end_index;
loff_t isize;
.spd_release = spd_release_page,
};
+ if (splice_grow_spd(pipe, &spd))
+ return -ENOMEM;
+
index = *ppos >> PAGE_CACHE_SHIFT;
loff = *ppos & ~PAGE_CACHE_MASK;
req_pages = (len + loff + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- nr_pages = min(req_pages, (unsigned)PIPE_BUFFERS);
+ nr_pages = min(req_pages, pipe->buffers);
/*
* Lookup the (hopefully) full range of pages we need.
*/
- spd.nr_pages = find_get_pages_contig(mapping, index, nr_pages, pages);
+ spd.nr_pages = find_get_pages_contig(mapping, index, nr_pages, spd.pages);
index += spd.nr_pages;
/*
break;
error = add_to_page_cache_lru(page, mapping, index,
- mapping_gfp_mask(mapping));
+ GFP_KERNEL);
if (unlikely(error)) {
page_cache_release(page);
if (error == -EEXIST)
unlock_page(page);
}
- pages[spd.nr_pages++] = page;
+ spd.pages[spd.nr_pages++] = page;
index++;
}
* this_len is the max we'll use from this page
*/
this_len = min_t(unsigned long, len, PAGE_CACHE_SIZE - loff);
- page = pages[page_nr];
+ page = spd.pages[page_nr];
if (PageReadahead(page))
page_cache_async_readahead(mapping, &in->f_ra, in,
* If the page isn't uptodate, we may need to start io on it
*/
if (!PageUptodate(page)) {
- /*
- * If in nonblock mode then dont block on waiting
- * for an in-flight io page
- */
- if (flags & SPLICE_F_NONBLOCK) {
- if (!trylock_page(page)) {
- error = -EAGAIN;
- break;
- }
- } else
- lock_page(page);
+ lock_page(page);
/*
* Page was truncated, or invalidated by the
error = -ENOMEM;
break;
}
- page_cache_release(pages[page_nr]);
- pages[page_nr] = page;
+ page_cache_release(spd.pages[page_nr]);
+ spd.pages[page_nr] = page;
}
/*
* page was already under io and is now done, great
len = this_len;
}
- partial[page_nr].offset = loff;
- partial[page_nr].len = this_len;
+ spd.partial[page_nr].offset = loff;
+ spd.partial[page_nr].len = this_len;
len -= this_len;
loff = 0;
spd.nr_pages++;
* we got, 'nr_pages' is how many pages are in the map.
*/
while (page_nr < nr_pages)
- page_cache_release(pages[page_nr++]);
+ page_cache_release(spd.pages[page_nr++]);
in->f_ra.prev_pos = (loff_t)index << PAGE_CACHE_SHIFT;
if (spd.nr_pages)
- return splice_to_pipe(pipe, &spd);
+ error = splice_to_pipe(pipe, &spd);
+ splice_shrink_spd(pipe, &spd);
return error;
}
len = left;
ret = __generic_file_splice_read(in, ppos, pipe, len, flags);
- if (ret > 0)
+ if (ret > 0) {
*ppos += ret;
+ file_accessed(in);
+ }
return ret;
}
return res;
}
-static ssize_t kernel_writev(struct file *file, const struct iovec *vec,
- unsigned long vlen, loff_t *ppos)
+static ssize_t kernel_write(struct file *file, const char *buf, size_t count,
+ loff_t pos)
{
mm_segment_t old_fs;
ssize_t res;
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
- res = vfs_writev(file, (const struct iovec __user *)vec, vlen, ppos);
+ res = vfs_write(file, (const char __user *)buf, count, &pos);
set_fs(old_fs);
return res;
unsigned int nr_pages;
unsigned int nr_freed;
size_t offset;
- struct page *pages[PIPE_BUFFERS];
- struct partial_page partial[PIPE_BUFFERS];
- struct iovec vec[PIPE_BUFFERS];
- pgoff_t index;
+ struct page *pages[PIPE_DEF_BUFFERS];
+ struct partial_page partial[PIPE_DEF_BUFFERS];
+ struct iovec *vec, __vec[PIPE_DEF_BUFFERS];
ssize_t res;
size_t this_len;
int error;
.spd_release = spd_release_page,
};
- index = *ppos >> PAGE_CACHE_SHIFT;
+ if (splice_grow_spd(pipe, &spd))
+ return -ENOMEM;
+
+ res = -ENOMEM;
+ vec = __vec;
+ if (pipe->buffers > PIPE_DEF_BUFFERS) {
+ vec = kmalloc(pipe->buffers * sizeof(struct iovec), GFP_KERNEL);
+ if (!vec)
+ goto shrink_ret;
+ }
+
offset = *ppos & ~PAGE_CACHE_MASK;
nr_pages = (len + offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- for (i = 0; i < nr_pages && i < PIPE_BUFFERS && len; i++) {
+ for (i = 0; i < nr_pages && i < pipe->buffers && len; i++) {
struct page *page;
- page = alloc_page(GFP_HIGHUSER);
+ page = alloc_page(GFP_USER);
error = -ENOMEM;
if (!page)
goto err;
this_len = min_t(size_t, len, PAGE_CACHE_SIZE - offset);
- vec[i].iov_base = (void __user *) kmap(page);
+ vec[i].iov_base = (void __user *) page_address(page);
vec[i].iov_len = this_len;
- pages[i] = page;
+ spd.pages[i] = page;
spd.nr_pages++;
len -= this_len;
offset = 0;
}
res = kernel_readv(in, vec, spd.nr_pages, *ppos);
- if (res < 0)
+ if (res < 0) {
+ error = res;
goto err;
+ }
error = 0;
if (!res)
nr_freed = 0;
for (i = 0; i < spd.nr_pages; i++) {
- kunmap(pages[i]);
this_len = min_t(size_t, vec[i].iov_len, res);
- partial[i].offset = 0;
- partial[i].len = this_len;
+ spd.partial[i].offset = 0;
+ spd.partial[i].len = this_len;
if (!this_len) {
- __free_page(pages[i]);
- pages[i] = NULL;
+ __free_page(spd.pages[i]);
+ spd.pages[i] = NULL;
nr_freed++;
}
res -= this_len;
if (res > 0)
*ppos += res;
+shrink_ret:
+ if (vec != __vec)
+ kfree(vec);
+ splice_shrink_spd(pipe, &spd);
return res;
err:
- for (i = 0; i < spd.nr_pages; i++) {
- kunmap(pages[i]);
- __free_page(pages[i]);
- }
- return error;
+ for (i = 0; i < spd.nr_pages; i++)
+ __free_page(spd.pages[i]);
+
+ res = error;
+ goto shrink_ret;
}
EXPORT_SYMBOL(default_file_splice_read);
{
struct file *file = sd->u.file;
loff_t pos = sd->pos;
- int ret, more;
-
- ret = buf->ops->confirm(pipe, buf);
- if (!ret) {
- more = (sd->flags & SPLICE_F_MORE) || sd->len < sd->total_len;
+ int more;
- ret = file->f_op->sendpage(file, buf->page, buf->offset,
- sd->len, &pos, more);
- }
+ if (!likely(file->f_op && file->f_op->sendpage))
+ return -EINVAL;
- return ret;
+ more = (sd->flags & SPLICE_F_MORE) || sd->len < sd->total_len;
+ return file->f_op->sendpage(file, buf->page, buf->offset,
+ sd->len, &pos, more);
}
/*
void *fsdata;
int ret;
- /*
- * make sure the data in this buffer is uptodate
- */
- ret = buf->ops->confirm(pipe, buf);
- if (unlikely(ret))
- return ret;
-
offset = sd->pos & ~PAGE_CACHE_MASK;
this_len = sd->len;
if (sd->len > sd->total_len)
sd->len = sd->total_len;
- ret = actor(pipe, buf, sd);
- if (ret <= 0) {
+ ret = buf->ops->confirm(pipe, buf);
+ if (unlikely(ret)) {
if (ret == -ENODATA)
ret = 0;
return ret;
}
+
+ ret = actor(pipe, buf, sd);
+ if (ret <= 0)
+ return ret;
+
buf->offset += ret;
buf->len -= ret;
if (!buf->len) {
buf->ops = NULL;
ops->release(pipe, buf);
- pipe->curbuf = (pipe->curbuf + 1) & (PIPE_BUFFERS - 1);
+ pipe->curbuf = (pipe->curbuf + 1) & (pipe->buffers - 1);
pipe->nrbufs--;
if (pipe->inode)
sd->need_wakeup = true;
mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD);
ret = file_remove_suid(out);
- if (!ret)
+ if (!ret) {
+ file_update_time(out);
ret = splice_from_pipe_feed(pipe, &sd, pipe_to_file);
+ }
mutex_unlock(&inode->i_mutex);
} while (ret > 0);
splice_from_pipe_end(pipe, &sd);
if (ret > 0) {
unsigned long nr_pages;
+ int err;
- *ppos += ret;
nr_pages = (ret + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- /*
- * If file or inode is SYNC and we actually wrote some data,
- * sync it.
- */
- if (unlikely((out->f_flags & O_SYNC) || IS_SYNC(inode))) {
- int err;
-
- mutex_lock(&inode->i_mutex);
- err = generic_osync_inode(inode, mapping,
- OSYNC_METADATA|OSYNC_DATA);
- mutex_unlock(&inode->i_mutex);
-
- if (err)
- ret = err;
- }
+ err = generic_write_sync(out, *ppos, ret);
+ if (err)
+ ret = err;
+ else
+ *ppos += ret;
balance_dirty_pages_ratelimited_nr(mapping, nr_pages);
}
EXPORT_SYMBOL(generic_file_splice_write);
-static struct pipe_buffer *nth_pipe_buf(struct pipe_inode_info *pipe, int n)
+static int write_pipe_buf(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
+ struct splice_desc *sd)
{
- return &pipe->bufs[(pipe->curbuf + n) % PIPE_BUFFERS];
+ int ret;
+ void *data;
+
+ data = buf->ops->map(pipe, buf, 0);
+ ret = kernel_write(sd->u.file, data + buf->offset, sd->len, sd->pos);
+ buf->ops->unmap(pipe, buf, data);
+
+ return ret;
}
static ssize_t default_file_splice_write(struct pipe_inode_info *pipe,
struct file *out, loff_t *ppos,
size_t len, unsigned int flags)
{
- ssize_t ret = 0;
- ssize_t total_len = 0;
- int do_wakeup = 0;
-
- pipe_lock(pipe);
- while (len) {
- struct pipe_buffer *buf;
- void *data[PIPE_BUFFERS];
- struct iovec vec[PIPE_BUFFERS];
- unsigned int nr_pages = 0;
- unsigned int write_len = 0;
- unsigned int now_len = len;
- unsigned int this_len;
- int i;
-
- BUG_ON(pipe->nrbufs > PIPE_BUFFERS);
- for (i = 0; i < pipe->nrbufs && now_len; i++) {
- buf = nth_pipe_buf(pipe, i);
-
- ret = buf->ops->confirm(pipe, buf);
- if (ret)
- break;
-
- data[i] = buf->ops->map(pipe, buf, 0);
- this_len = min(buf->len, now_len);
- vec[i].iov_base = (void __user *) data[i] + buf->offset;
- vec[i].iov_len = this_len;
- now_len -= this_len;
- write_len += this_len;
- nr_pages++;
- }
-
- if (nr_pages) {
- ret = kernel_writev(out, vec, nr_pages, ppos);
- if (ret == 0)
- ret = -EIO;
- if (ret > 0) {
- len -= ret;
- total_len += ret;
- }
- }
-
- for (i = 0; i < nr_pages; i++) {
- buf = nth_pipe_buf(pipe, i);
- buf->ops->unmap(pipe, buf, data[i]);
-
- if (ret > 0) {
- this_len = min_t(unsigned, vec[i].iov_len, ret);
- buf->offset += this_len;
- buf->len -= this_len;
- ret -= this_len;
- }
- }
-
- if (ret < 0)
- break;
-
- while (pipe->nrbufs) {
- const struct pipe_buf_operations *ops;
-
- buf = nth_pipe_buf(pipe, 0);
- if (buf->len)
- break;
-
- ops = buf->ops;
- buf->ops = NULL;
- ops->release(pipe, buf);
- pipe->curbuf = (pipe->curbuf + 1) % PIPE_BUFFERS;
- pipe->nrbufs--;
- if (pipe->inode)
- do_wakeup = 1;
- }
-
- if (pipe->nrbufs)
- continue;
- if (!pipe->writers)
- break;
- if (!pipe->waiting_writers) {
- if (total_len)
- break;
- }
-
- if (flags & SPLICE_F_NONBLOCK) {
- ret = -EAGAIN;
- break;
- }
-
- if (signal_pending(current)) {
- ret = -ERESTARTSYS;
- break;
- }
-
- if (do_wakeup) {
- wakeup_pipe_writers(pipe);
- do_wakeup = 0;
- }
-
- pipe_wait(pipe);
- }
- pipe_unlock(pipe);
+ ssize_t ret;
- if (do_wakeup)
- wakeup_pipe_writers(pipe);
+ ret = splice_from_pipe(pipe, out, ppos, len, flags, write_pipe_buf);
+ if (ret > 0)
+ *ppos += ret;
- return total_len ? total_len : ret;
+ return ret;
}
/**
/*
* Attempt to initiate a splice from pipe to file.
*/
-static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
- loff_t *ppos, size_t len, unsigned int flags)
+long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags)
{
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
loff_t *, size_t, unsigned int);
if (unlikely(ret < 0))
return ret;
- splice_write = out->f_op->splice_write;
- if (!splice_write)
+ if (out->f_op && out->f_op->splice_write)
+ splice_write = out->f_op->splice_write;
+ else
splice_write = default_file_splice_write;
return splice_write(pipe, out, ppos, len, flags);
}
+EXPORT_SYMBOL(do_splice_from);
/*
* Attempt to initiate a splice from a file to a pipe.
*/
-static long do_splice_to(struct file *in, loff_t *ppos,
- struct pipe_inode_info *pipe, size_t len,
- unsigned int flags)
+long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
{
ssize_t (*splice_read)(struct file *, loff_t *,
struct pipe_inode_info *, size_t, unsigned int);
if (unlikely(ret < 0))
return ret;
- splice_read = in->f_op->splice_read;
- if (!splice_read)
+ if (in->f_op && in->f_op->splice_read)
+ splice_read = in->f_op->splice_read;
+ else
splice_read = default_file_splice_read;
return splice_read(in, ppos, pipe, len, flags);
}
+EXPORT_SYMBOL(do_splice_to);
/**
* splice_direct_to_actor - splices data directly between two non-pipes
* If we did an incomplete transfer we must release
* the pipe buffers in question:
*/
- for (i = 0; i < PIPE_BUFFERS; i++) {
+ for (i = 0; i < pipe->buffers; i++) {
struct pipe_buffer *buf = pipe->bufs + i;
if (buf->ops) {
{
struct file *file = sd->u.file;
- return do_splice_from(pipe, file, &sd->pos, sd->total_len, sd->flags);
+ return do_splice_from(pipe, file, &file->f_pos, sd->total_len,
+ sd->flags);
}
/**
static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe,
struct pipe_inode_info *opipe,
size_t len, unsigned int flags);
-/*
- * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same
- * location, so checking ->i_pipe is not enough to verify that this is a
- * pipe.
- */
-static inline struct pipe_inode_info *pipe_info(struct inode *inode)
-{
- if (S_ISFIFO(inode->i_mode))
- return inode->i_pipe;
-
- return NULL;
-}
/*
* Determine where to splice to/from.
loff_t offset, *off;
long ret;
- ipipe = pipe_info(in->f_path.dentry->d_inode);
- opipe = pipe_info(out->f_path.dentry->d_inode);
+ ipipe = get_pipe_info(in);
+ opipe = get_pipe_info(out);
if (ipipe && opipe) {
if (off_in || off_out)
if (off_in)
return -ESPIPE;
if (off_out) {
- if (out->f_op->llseek == no_llseek)
+ if (!(out->f_mode & FMODE_PWRITE))
return -EINVAL;
if (copy_from_user(&offset, off_out, sizeof(loff_t)))
return -EFAULT;
if (off_out)
return -ESPIPE;
if (off_in) {
- if (in->f_op->llseek == no_llseek)
+ if (!(in->f_mode & FMODE_PREAD))
return -EINVAL;
if (copy_from_user(&offset, off_in, sizeof(loff_t)))
return -EFAULT;
*/
static int get_iovec_page_array(const struct iovec __user *iov,
unsigned int nr_vecs, struct page **pages,
- struct partial_page *partial, int aligned)
+ struct partial_page *partial, int aligned,
+ unsigned int pipe_buffers)
{
int buffers = 0, error = 0;
break;
npages = (off + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
- if (npages > PIPE_BUFFERS - buffers)
- npages = PIPE_BUFFERS - buffers;
+ if (npages > pipe_buffers - buffers)
+ npages = pipe_buffers - buffers;
error = get_user_pages_fast((unsigned long)base, npages,
0, &pages[buffers]);
* or if we mapped the max number of pages that we have
* room for.
*/
- if (error < npages || buffers == PIPE_BUFFERS)
+ if (error < npages || buffers == pipe_buffers)
break;
nr_vecs--;
char *src;
int ret;
- ret = buf->ops->confirm(pipe, buf);
- if (unlikely(ret))
- return ret;
-
/*
* See if we can use the atomic maps, by prefaulting in the
* pages and doing an atomic copy
int error;
long ret;
- pipe = pipe_info(file->f_path.dentry->d_inode);
+ pipe = get_pipe_info(file);
if (!pipe)
return -EBADF;
unsigned long nr_segs, unsigned int flags)
{
struct pipe_inode_info *pipe;
- struct page *pages[PIPE_BUFFERS];
- struct partial_page partial[PIPE_BUFFERS];
+ struct page *pages[PIPE_DEF_BUFFERS];
+ struct partial_page partial[PIPE_DEF_BUFFERS];
struct splice_pipe_desc spd = {
.pages = pages,
.partial = partial,
.ops = &user_page_pipe_buf_ops,
.spd_release = spd_release_page,
};
+ long ret;
- pipe = pipe_info(file->f_path.dentry->d_inode);
+ pipe = get_pipe_info(file);
if (!pipe)
return -EBADF;
- spd.nr_pages = get_iovec_page_array(iov, nr_segs, pages, partial,
- flags & SPLICE_F_GIFT);
+ if (splice_grow_spd(pipe, &spd))
+ return -ENOMEM;
+
+ spd.nr_pages = get_iovec_page_array(iov, nr_segs, spd.pages,
+ spd.partial, flags & SPLICE_F_GIFT,
+ pipe->buffers);
if (spd.nr_pages <= 0)
- return spd.nr_pages;
+ ret = spd.nr_pages;
+ else
+ ret = splice_to_pipe(pipe, &spd);
- return splice_to_pipe(pipe, &spd);
+ splice_shrink_spd(pipe, &spd);
+ return ret;
}
/*
* Check ->nrbufs without the inode lock first. This function
* is speculative anyways, so missing one is ok.
*/
- if (pipe->nrbufs < PIPE_BUFFERS)
+ if (pipe->nrbufs < pipe->buffers)
return 0;
ret = 0;
pipe_lock(pipe);
- while (pipe->nrbufs >= PIPE_BUFFERS) {
+ while (pipe->nrbufs >= pipe->buffers) {
if (!pipe->readers) {
send_sig(SIGPIPE, current, 0);
ret = -EPIPE;
* Cannot make any progress, because either the input
* pipe is empty or the output pipe is full.
*/
- if (!ipipe->nrbufs || opipe->nrbufs >= PIPE_BUFFERS) {
+ if (!ipipe->nrbufs || opipe->nrbufs >= opipe->buffers) {
/* Already processed some buffers, break */
if (ret)
break;
}
ibuf = ipipe->bufs + ipipe->curbuf;
- nbuf = (opipe->curbuf + opipe->nrbufs) % PIPE_BUFFERS;
+ nbuf = (opipe->curbuf + opipe->nrbufs) & (opipe->buffers - 1);
obuf = opipe->bufs + nbuf;
if (len >= ibuf->len) {
*obuf = *ibuf;
ibuf->ops = NULL;
opipe->nrbufs++;
- ipipe->curbuf = (ipipe->curbuf + 1) % PIPE_BUFFERS;
+ ipipe->curbuf = (ipipe->curbuf + 1) & (ipipe->buffers - 1);
ipipe->nrbufs--;
input_wakeup = true;
} else {
* If we have iterated all input buffers or ran out of
* output room, break.
*/
- if (i >= ipipe->nrbufs || opipe->nrbufs >= PIPE_BUFFERS)
+ if (i >= ipipe->nrbufs || opipe->nrbufs >= opipe->buffers)
break;
- ibuf = ipipe->bufs + ((ipipe->curbuf + i) & (PIPE_BUFFERS - 1));
- nbuf = (opipe->curbuf + opipe->nrbufs) & (PIPE_BUFFERS - 1);
+ ibuf = ipipe->bufs + ((ipipe->curbuf + i) & (ipipe->buffers-1));
+ nbuf = (opipe->curbuf + opipe->nrbufs) & (opipe->buffers - 1);
/*
* Get a reference to this pipe buffer,
static long do_tee(struct file *in, struct file *out, size_t len,
unsigned int flags)
{
- struct pipe_inode_info *ipipe = pipe_info(in->f_path.dentry->d_inode);
- struct pipe_inode_info *opipe = pipe_info(out->f_path.dentry->d_inode);
+ struct pipe_inode_info *ipipe = get_pipe_info(in);
+ struct pipe_inode_info *opipe = get_pipe_info(out);
int ret = -EINVAL;
/*
projects / linux-flexiantxendom0-natty.git / blobdiff