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authorAl Viro <viro@zeniv.linux.org.uk>2013-03-21 10:32:24 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-04-09 22:13:00 +0400
commit72b0d9aacb89f3759931ec440e1b535671145bb4 (patch)
tree65b5d6166912b1c406fad596e06138d60cf3b8ff /include/linux/pipe_fs_i.h
parentba5bb147330a8737b6b5a812cc774c79c070704b (diff)
downloadlinux-72b0d9aacb89f3759931ec440e1b535671145bb4.tar.xz
pipe: don't use ->i_mutex
now it can be done - put mutex into pipe_inode_info, use it instead of ->i_mutex Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/pipe_fs_i.h')
-rw-r--r--include/linux/pipe_fs_i.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 59778e1c9c08..d803a85a64b6 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -27,6 +27,7 @@ struct pipe_buffer {
/**
* struct pipe_inode_info - a linux kernel pipe
+ * @mutex: mutex protecting the whole thing
* @wait: reader/writer wait point in case of empty/full pipe
* @nrbufs: the number of non-empty pipe buffers in this pipe
* @buffers: total number of buffers (should be a power of 2)
@@ -44,6 +45,7 @@ struct pipe_buffer {
* @bufs: the circular array of pipe buffers
**/
struct pipe_inode_info {
+ struct mutex mutex;
wait_queue_head_t wait;
unsigned int nrbufs, curbuf, buffers;
unsigned int readers;