summaryrefslogtreecommitdiffstats
path: root/fs/pipe.c
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2010-12-13 09:28:43 +0100
committerTakashi Iwai <tiwai@suse.de>2010-12-13 09:28:43 +0100
commit20aeeb356ba2e8daa99b5942c528ae2b3ea28433 (patch)
treed2cebc7039954851998d592123899f5627def7a9 /fs/pipe.c
parent07a9e2b2fbdda631eeff54e4b8ebcaaea71be538 (diff)
parent5b84ba26a9672e615897234fa5efd3eea2d6b295 (diff)
Merge branch 'topic/workq-update' into topic/asoc
Conflicts: sound/soc/codecs/wm8350.c sound/soc/codecs/wm8753.c sound/soc/sh/fsi.c sound/soc/soc-core.c
Diffstat (limited to 'fs/pipe.c')
-rw-r--r--fs/pipe.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/pipe.c b/fs/pipe.c
index a8012a95572..04629f36e39 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1199,12 +1199,24 @@ int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf,
return ret;
}
+/*
+ * 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.
+ */
+struct pipe_inode_info *get_pipe_info(struct file *file)
+{
+ struct inode *i = file->f_path.dentry->d_inode;
+
+ return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL;
+}
+
long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct pipe_inode_info *pipe;
long ret;
- pipe = file->f_path.dentry->d_inode->i_pipe;
+ pipe = get_pipe_info(file);
if (!pipe)
return -EBADF;