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-rw-r--r--fs/fifo.c12
-rw-r--r--fs/pipe.c51
-rw-r--r--fs/splice.c122
-rw-r--r--fs/xfs/linux-2.6/xfs_file.c8
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.h4
-rw-r--r--fs/xfs/linux-2.6/xfs_vnode.h4
-rw-r--r--include/linux/fs.h8
-rw-r--r--include/linux/pipe_fs_i.h7
9 files changed, 114 insertions, 106 deletions
diff --git a/fs/fifo.c b/fs/fifo.c
index 889f722..b16e2f5 100644
--- a/fs/fifo.c
+++ b/fs/fifo.c
@@ -15,12 +15,13 @@
#include <linux/fs.h>
#include <linux/pipe_fs_i.h>
-static void wait_for_partner(struct inode* inode, unsigned int* cnt)
+static void wait_for_partner(struct inode* inode, unsigned int *cnt)
{
int cur = *cnt;
- while(cur == *cnt) {
- pipe_wait(inode);
- if(signal_pending(current))
+
+ while (cur == *cnt) {
+ pipe_wait(inode->i_pipe);
+ if (signal_pending(current))
break;
}
}
@@ -37,7 +38,8 @@ static int fifo_open(struct inode *inode, struct file *filp)
mutex_lock(PIPE_MUTEX(*inode));
if (!inode->i_pipe) {
ret = -ENOMEM;
- if(!pipe_new(inode))
+ inode->i_pipe = alloc_pipe_info(inode);
+ if (!inode->i_pipe)
goto err_nocleanup;
}
filp->f_version = 0;
diff --git a/fs/pipe.c b/fs/pipe.c
index 795df98..705b486 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -36,7 +36,7 @@
*/
/* Drop the inode semaphore and wait for a pipe event, atomically */
-void pipe_wait(struct inode * inode)
+void pipe_wait(struct pipe_inode_info *pipe)
{
DEFINE_WAIT(wait);
@@ -44,11 +44,13 @@ void pipe_wait(struct inode * inode)
* Pipes are system-local resources, so sleeping on them
* is considered a noninteractive wait:
*/
- prepare_to_wait(PIPE_WAIT(*inode), &wait, TASK_INTERRUPTIBLE|TASK_NONINTERACTIVE);
- mutex_unlock(PIPE_MUTEX(*inode));
+ prepare_to_wait(&pipe->wait, &wait, TASK_INTERRUPTIBLE|TASK_NONINTERACTIVE);
+ if (pipe->inode)
+ mutex_unlock(&pipe->inode->i_mutex);
schedule();
- finish_wait(PIPE_WAIT(*inode), &wait);
- mutex_lock(PIPE_MUTEX(*inode));
+ finish_wait(&pipe->wait, &wait);
+ if (pipe->inode)
+ mutex_lock(&pipe->inode->i_mutex);
}
static int
@@ -223,7 +225,7 @@ pipe_readv(struct file *filp, const struct iovec *_iov,
wake_up_interruptible_sync(PIPE_WAIT(*inode));
kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT);
}
- pipe_wait(inode);
+ pipe_wait(inode->i_pipe);
}
mutex_unlock(PIPE_MUTEX(*inode));
/* Signal writers asynchronously that there is more room. */
@@ -370,7 +372,7 @@ pipe_writev(struct file *filp, const struct iovec *_iov,
do_wakeup = 0;
}
PIPE_WAITING_WRITERS(*inode)++;
- pipe_wait(inode);
+ pipe_wait(inode->i_pipe);
PIPE_WAITING_WRITERS(*inode)--;
}
out:
@@ -675,6 +677,20 @@ static struct file_operations rdwr_pipe_fops = {
.fasync = pipe_rdwr_fasync,
};
+struct pipe_inode_info * alloc_pipe_info(struct inode *inode)
+{
+ struct pipe_inode_info *info;
+
+ info = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL);
+ if (info) {
+ init_waitqueue_head(&info->wait);
+ info->r_counter = info->w_counter = 1;
+ info->inode = inode;
+ }
+
+ return info;
+}
+
void free_pipe_info(struct inode *inode)
{
int i;
@@ -691,23 +707,6 @@ void free_pipe_info(struct inode *inode)
kfree(info);
}
-struct inode* pipe_new(struct inode* inode)
-{
- struct pipe_inode_info *info;
-
- info = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL);
- if (!info)
- goto fail_page;
- inode->i_pipe = info;
-
- init_waitqueue_head(PIPE_WAIT(*inode));
- PIPE_RCOUNTER(*inode) = PIPE_WCOUNTER(*inode) = 1;
-
- return inode;
-fail_page:
- return NULL;
-}
-
static struct vfsmount *pipe_mnt __read_mostly;
static int pipefs_delete_dentry(struct dentry *dentry)
{
@@ -724,8 +723,10 @@ static struct inode * get_pipe_inode(void)
if (!inode)
goto fail_inode;
- if(!pipe_new(inode))
+ inode->i_pipe = alloc_pipe_info(inode);
+ if (!inode->i_pipe)
goto fail_iput;
+
PIPE_READERS(*inode) = PIPE_WRITERS(*inode) = 1;
inode->i_fop = &rdwr_pipe_fops;
diff --git a/fs/splice.c b/fs/splice.c
index 9bfd6af..ed91a62 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -136,34 +136,33 @@ static struct pipe_buf_operations page_cache_pipe_buf_ops = {
* Pipe output worker. This sets up our pipe format with the page cache
* pipe buffer operations. Otherwise very similar to the regular pipe_writev().
*/
-static ssize_t move_to_pipe(struct inode *inode, struct page **pages,
+static ssize_t move_to_pipe(struct pipe_inode_info *pipe, struct page **pages,
int nr_pages, unsigned long offset,
unsigned long len, unsigned int flags)
{
- struct pipe_inode_info *info;
int ret, do_wakeup, i;
ret = 0;
do_wakeup = 0;
i = 0;
- mutex_lock(PIPE_MUTEX(*inode));
+ if (pipe->inode)
+ mutex_lock(&pipe->inode->i_mutex);
- info = inode->i_pipe;
for (;;) {
int bufs;
- if (!PIPE_READERS(*inode)) {
+ if (!pipe->readers) {
send_sig(SIGPIPE, current, 0);
if (!ret)
ret = -EPIPE;
break;
}
- bufs = info->nrbufs;
+ bufs = pipe->nrbufs;
if (bufs < PIPE_BUFFERS) {
- int newbuf = (info->curbuf + bufs) & (PIPE_BUFFERS - 1);
- struct pipe_buffer *buf = info->bufs + newbuf;
+ int newbuf = (pipe->curbuf + bufs) & (PIPE_BUFFERS - 1);
+ struct pipe_buffer *buf = pipe->bufs + newbuf;
struct page *page = pages[i++];
unsigned long this_len;
@@ -175,7 +174,7 @@ static ssize_t move_to_pipe(struct inode *inode, struct page **pages,
buf->offset = offset;
buf->len = this_len;
buf->ops = &page_cache_pipe_buf_ops;
- info->nrbufs = ++bufs;
+ pipe->nrbufs = ++bufs;
do_wakeup = 1;
ret += this_len;
@@ -205,25 +204,25 @@ static ssize_t move_to_pipe(struct inode *inode, struct page **pages,
if (do_wakeup) {
smp_mb();
- if (waitqueue_active(PIPE_WAIT(*inode)))
- wake_up_interruptible_sync(PIPE_WAIT(*inode));
- kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO,
- POLL_IN);
+ if (waitqueue_active(&pipe->wait))
+ wake_up_interruptible_sync(&pipe->wait);
+ kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
do_wakeup = 0;
}
- PIPE_WAITING_WRITERS(*inode)++;
- pipe_wait(inode);
- PIPE_WAITING_WRITERS(*inode)--;
+ pipe->waiting_writers++;
+ pipe_wait(pipe);
+ pipe->waiting_writers--;
}
- mutex_unlock(PIPE_MUTEX(*inode));
+ if (pipe->inode)
+ mutex_unlock(&pipe->inode->i_mutex);
if (do_wakeup) {
smp_mb();
- if (waitqueue_active(PIPE_WAIT(*inode)))
- wake_up_interruptible(PIPE_WAIT(*inode));
- kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN);
+ if (waitqueue_active(&pipe->wait))
+ wake_up_interruptible(&pipe->wait);
+ kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
}
while (i < nr_pages)
@@ -232,8 +231,9 @@ static ssize_t move_to_pipe(struct inode *inode, struct page **pages,
return ret;
}
-static int __generic_file_splice_read(struct file *in, struct inode *pipe,
- size_t len, unsigned int flags)
+static int
+__generic_file_splice_read(struct file *in, struct pipe_inode_info *pipe,
+ size_t len, unsigned int flags)
{
struct address_space *mapping = in->f_mapping;
unsigned int offset, nr_pages;
@@ -298,7 +298,7 @@ static int __generic_file_splice_read(struct file *in, struct inode *pipe,
* Will read pages from given file and fill them into a pipe.
*
*/
-ssize_t generic_file_splice_read(struct file *in, struct inode *pipe,
+ssize_t generic_file_splice_read(struct file *in, struct pipe_inode_info *pipe,
size_t len, unsigned int flags)
{
ssize_t spliced;
@@ -306,6 +306,7 @@ ssize_t generic_file_splice_read(struct file *in, struct inode *pipe,
ret = 0;
spliced = 0;
+
while (len) {
ret = __generic_file_splice_read(in, pipe, len, flags);
@@ -509,11 +510,10 @@ typedef int (splice_actor)(struct pipe_inode_info *, struct pipe_buffer *,
* key here is the 'actor' worker passed in that actually moves the data
* to the wanted destination. See pipe_to_file/pipe_to_sendpage above.
*/
-static ssize_t move_from_pipe(struct inode *inode, struct file *out,
+static ssize_t move_from_pipe(struct pipe_inode_info *pipe, struct file *out,
size_t len, unsigned int flags,
splice_actor *actor)
{
- struct pipe_inode_info *info;
int ret, do_wakeup, err;
struct splice_desc sd;
@@ -525,22 +525,22 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
sd.file = out;
sd.pos = out->f_pos;
- mutex_lock(PIPE_MUTEX(*inode));
+ if (pipe->inode)
+ mutex_lock(&pipe->inode->i_mutex);
- info = inode->i_pipe;
for (;;) {
- int bufs = info->nrbufs;
+ int bufs = pipe->nrbufs;
if (bufs) {
- int curbuf = info->curbuf;
- struct pipe_buffer *buf = info->bufs + curbuf;
+ int curbuf = pipe->curbuf;
+ struct pipe_buffer *buf = pipe->bufs + curbuf;
struct pipe_buf_operations *ops = buf->ops;
sd.len = buf->len;
if (sd.len > sd.total_len)
sd.len = sd.total_len;
- err = actor(info, buf, &sd);
+ err = actor(pipe, buf, &sd);
if (err) {
if (!ret && err != -ENODATA)
ret = err;
@@ -553,10 +553,10 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
buf->len -= sd.len;
if (!buf->len) {
buf->ops = NULL;
- ops->release(info, buf);
+ ops->release(pipe, buf);
curbuf = (curbuf + 1) & (PIPE_BUFFERS - 1);
- info->curbuf = curbuf;
- info->nrbufs = --bufs;
+ pipe->curbuf = curbuf;
+ pipe->nrbufs = --bufs;
do_wakeup = 1;
}
@@ -568,9 +568,9 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
if (bufs)
continue;
- if (!PIPE_WRITERS(*inode))
+ if (!pipe->writers)
break;
- if (!PIPE_WAITING_WRITERS(*inode)) {
+ if (!pipe->waiting_writers) {
if (ret)
break;
}
@@ -589,22 +589,23 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
if (do_wakeup) {
smp_mb();
- if (waitqueue_active(PIPE_WAIT(*inode)))
- wake_up_interruptible_sync(PIPE_WAIT(*inode));
- kill_fasync(PIPE_FASYNC_WRITERS(*inode),SIGIO,POLL_OUT);
+ if (waitqueue_active(&pipe->wait))
+ wake_up_interruptible_sync(&pipe->wait);
+ kill_fasync(&pipe->fasync_writers, SIGIO, POLL_OUT);
do_wakeup = 0;
}
- pipe_wait(inode);
+ pipe_wait(pipe);
}
- mutex_unlock(PIPE_MUTEX(*inode));
+ if (pipe->inode)
+ mutex_unlock(&pipe->inode->i_mutex);
if (do_wakeup) {
smp_mb();
- if (waitqueue_active(PIPE_WAIT(*inode)))
- wake_up_interruptible(PIPE_WAIT(*inode));
- kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT);
+ if (waitqueue_active(&pipe->wait))
+ wake_up_interruptible(&pipe->wait);
+ kill_fasync(&pipe->fasync_writers, SIGIO, POLL_OUT);
}
mutex_lock(&out->f_mapping->host->i_mutex);
@@ -616,7 +617,7 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
/**
* generic_file_splice_write - splice data from a pipe to a file
- * @inode: pipe inode
+ * @pipe: pipe info
* @out: file to write to
* @len: number of bytes to splice
* @flags: splice modifier flags
@@ -625,11 +626,14 @@ static ssize_t move_from_pipe(struct inode *inode, struct file *out,
* the given pipe inode to the given file.
*
*/
-ssize_t generic_file_splice_write(struct inode *inode, struct file *out,
- size_t len, unsigned int flags)
+ssize_t
+generic_file_splice_write(struct pipe_inode_info *pipe, struct file *out,
+ size_t len, unsigned int flags)
{
struct address_space *mapping = out->f_mapping;
- ssize_t ret = move_from_pipe(inode, out, len, flags, pipe_to_file);
+ ssize_t ret;
+
+ ret = move_from_pipe(pipe, out, len, flags, pipe_to_file);
/*
* if file or inode is SYNC and we actually wrote some data, sync it
@@ -664,10 +668,10 @@ EXPORT_SYMBOL(generic_file_splice_write);
* is involved.
*
*/
-ssize_t generic_splice_sendpage(struct inode *inode, struct file *out,
+ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out,
size_t len, unsigned int flags)
{
- return move_from_pipe(inode, out, len, flags, pipe_to_sendpage);
+ return move_from_pipe(pipe, out, len, flags, pipe_to_sendpage);
}
EXPORT_SYMBOL(generic_splice_sendpage);
@@ -675,8 +679,8 @@ EXPORT_SYMBOL(generic_splice_sendpage);
/*
* Attempt to initiate a splice from pipe to file.
*/
-static long do_splice_from(struct inode *pipe, struct file *out, size_t len,
- unsigned int flags)
+static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ size_t len, unsigned int flags)
{
loff_t pos;
int ret;
@@ -698,8 +702,8 @@ static long do_splice_from(struct inode *pipe, struct file *out, size_t len,
/*
* Attempt to initiate a splice from a file to a pipe.
*/
-static long do_splice_to(struct file *in, struct inode *pipe, size_t len,
- unsigned int flags)
+static long do_splice_to(struct file *in, struct pipe_inode_info *pipe,
+ size_t len, unsigned int flags)
{
loff_t pos, isize, left;
int ret;
@@ -732,14 +736,14 @@ static long do_splice_to(struct file *in, struct inode *pipe, size_t len,
static long do_splice(struct file *in, struct file *out, size_t len,
unsigned int flags)
{
- struct inode *pipe;
+ struct pipe_inode_info *pipe;
- pipe = in->f_dentry->d_inode;
- if (pipe->i_pipe)
+ pipe = in->f_dentry->d_inode->i_pipe;
+ if (pipe)
return do_splice_from(pipe, out, len, flags);
- pipe = out->f_dentry->d_inode;
- if (pipe->i_pipe)
+ pipe = out->f_dentry->d_inode->i_pipe;
+ if (pipe)
return do_splice_to(in, pipe, len, flags);
return -EINVAL;
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index ae4c475..269721a 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -252,7 +252,7 @@ xfs_file_sendfile_invis(
STATIC ssize_t
xfs_file_splice_read(
struct file *infilp,
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
size_t len,
unsigned int flags)
{
@@ -266,7 +266,7 @@ xfs_file_splice_read(
STATIC ssize_t
xfs_file_splice_read_invis(
struct file *infilp,
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
size_t len,
unsigned int flags)
{
@@ -279,7 +279,7 @@ xfs_file_splice_read_invis(
STATIC ssize_t
xfs_file_splice_write(
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
struct file *outfilp,
size_t len,
unsigned int flags)
@@ -293,7 +293,7 @@ xfs_file_splice_write(
STATIC ssize_t
xfs_file_splice_write_invis(
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
struct file *outfilp,
size_t len,
unsigned int flags)
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 90cd314..74a52937 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -338,7 +338,7 @@ ssize_t
xfs_splice_read(
bhv_desc_t *bdp,
struct file *infilp,
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
size_t count,
int flags,
int ioflags,
@@ -380,7 +380,7 @@ xfs_splice_read(
ssize_t
xfs_splice_write(
bhv_desc_t *bdp,
- struct inode *pipe,
+ struct pipe_inode_info *pipe,
struct file *outfilp,
size_t count,
int flags,
diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
index eaa5659..55c689a 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.h
+++ b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -94,9 +94,9 @@ extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *,
loff_t *, int, size_t, read_actor_t,
void *, struct cred *);
extern ssize_t xfs_splice_read(struct bhv_desc *, struct file *,
- struct inode *, size_t, int, int,
+ struct pipe_inode_info *, size_t, int, int,
struct cred *);
-extern ssize_t xfs_splice_write(struct bhv_desc *, struct inode *,
+extern ssize_t xfs_splice_write(struct bhv_desc *, struct pipe_inode_info *,
struct file *, size_t, int, int,
struct cred *);
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 6f1c79a..88b09f1 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -174,9 +174,9 @@ typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
loff_t *, int, size_t, read_actor_t,
void *, struct cred *);
typedef ssize_t (*vop_splice_read_t)(bhv_desc_t *, struct file *,
- struct inode *, size_t, int, int,
+ struct pipe_inode_info *, size_t, int, int,
struct cred *);
-typedef ssize_t (*vop_splice_write_t)(bhv_desc_t *, struct inode *,
+typedef ssize_t (*vop_splice_write_t)(bhv_desc_t *, struct pipe_inode_info *,
struct file *, size_t, int, int,
struct cred *);
typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 1e9ebab..7e64544 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1039,8 +1039,8 @@ struct file_operations {
int (*check_flags)(int);
int (*dir_notify)(struct file *filp, unsigned long arg);
int (*flock) (struct file *, int, struct file_lock *);
- ssize_t (*splice_write)(struct inode *, struct file *, size_t, unsigned int);
- ssize_t (*splice_read)(struct file *, struct inode *, size_t, unsigned int);
+ ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
+ ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
};
struct inode_operations {
@@ -1611,8 +1611,8 @@ extern ssize_t generic_file_sendfile(struct file *, loff_t *, size_t, read_actor
extern void do_generic_mapping_read(struct address_space *mapping,
struct file_ra_state *, struct file *,
loff_t *, read_descriptor_t *, read_actor_t);
-extern ssize_t generic_file_splice_read(struct file *, struct inode *, size_t, unsigned int);
-extern ssize_t generic_file_splice_write(struct inode *, struct file *, size_t, unsigned int);
+extern ssize_t generic_file_splice_read(struct file *, struct pipe_inode_info *, size_t, unsigned int);
+extern ssize_t generic_file_splice_write(struct pipe_inode_info *, struct file *, size_t, unsigned int);
extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index ec38495..9cf99cb 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -36,6 +36,7 @@ struct pipe_inode_info {
unsigned int w_counter;
struct fasync_struct *fasync_readers;
struct fasync_struct *fasync_writers;
+ struct inode *inode;
};
/* Differs from PIPE_BUF in that PIPE_SIZE is the length of the actual
@@ -53,10 +54,10 @@ struct pipe_inode_info {
#define PIPE_FASYNC_WRITERS(inode) (&((inode).i_pipe->fasync_writers))
/* Drop the inode semaphore and wait for a pipe event, atomically */
-void pipe_wait(struct inode * inode);
+void pipe_wait(struct pipe_inode_info *pipe);
-struct inode* pipe_new(struct inode* inode);
-void free_pipe_info(struct inode* inode);
+struct pipe_inode_info * alloc_pipe_info(struct inode * inode);
+void free_pipe_info(struct inode * inode);
/*
* splice is tied to pipes as a transport (at least for now), so we'll just
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