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authorAl Viro <viro@zeniv.linux.org.uk>2013-03-21 11:01:38 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-04-09 14:13:01 -0400
commit6447a3cf19da8c4653283d1c491e2e775633f348 (patch)
tree9fda0088125df81c816b5cce416e5d010c9de498
parentebec73f4752b777b79b384bd52e5240203cb9b00 (diff)
get rid of pipe->inode
it's used only as a flag to distinguish normal pipes/FIFOs from the internal per-task one used by file-to-file splice. And pipe->files would work just as well for that purpose... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/fuse/dev.c2
-rw-r--r--fs/pipe.c5
-rw-r--r--fs/splice.c4
-rw-r--r--include/linux/pipe_fs_i.h2
4 files changed, 5 insertions, 8 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 11dfa0c3fb46..9bfd1a3214e6 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1319,7 +1319,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
page_nr++;
ret += buf->len;
- if (pipe->inode)
+ if (pipe->files)
do_wakeup = 1;
}
diff --git a/fs/pipe.c b/fs/pipe.c
index e2fc5ccb0d49..39bdec06fe2b 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -55,7 +55,7 @@ unsigned int pipe_min_size = PAGE_SIZE;
static void pipe_lock_nested(struct pipe_inode_info *pipe, int subclass)
{
- if (pipe->inode)
+ if (pipe->files)
mutex_lock_nested(&pipe->mutex, subclass);
}
@@ -70,7 +70,7 @@ EXPORT_SYMBOL(pipe_lock);
void pipe_unlock(struct pipe_inode_info *pipe)
{
- if (pipe->inode)
+ if (pipe->files)
mutex_unlock(&pipe->mutex);
}
EXPORT_SYMBOL(pipe_unlock);
@@ -785,7 +785,6 @@ struct pipe_inode_info * alloc_pipe_info(struct inode *inode)
if (pipe->bufs) {
init_waitqueue_head(&pipe->wait);
pipe->r_counter = pipe->w_counter = 1;
- pipe->inode = inode;
pipe->buffers = PIPE_DEF_BUFFERS;
mutex_init(&pipe->mutex);
return pipe;
diff --git a/fs/splice.c b/fs/splice.c
index 7efc2f5057fb..9f2a4447da50 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -218,7 +218,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
page_nr++;
ret += buf->len;
- if (pipe->inode)
+ if (pipe->files)
do_wakeup = 1;
if (!--spd->nr_pages)
@@ -828,7 +828,7 @@ int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_desc *sd,
ops->release(pipe, buf);
pipe->curbuf = (pipe->curbuf + 1) & (pipe->buffers - 1);
pipe->nrbufs--;
- if (pipe->inode)
+ if (pipe->files)
sd->need_wakeup = true;
}
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index d803a85a64b6..ed8eeeb10811 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -41,7 +41,6 @@ struct pipe_buffer {
* @w_counter: writer counter
* @fasync_readers: reader side fasync
* @fasync_writers: writer side fasync
- * @inode: inode this pipe is attached to
* @bufs: the circular array of pipe buffers
**/
struct pipe_inode_info {
@@ -57,7 +56,6 @@ struct pipe_inode_info {
struct page *tmp_page;
struct fasync_struct *fasync_readers;
struct fasync_struct *fasync_writers;
- struct inode *inode;
struct pipe_buffer *bufs;
};