diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-28 16:27:19 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-28 16:27:19 -0800 |
commit | 72083646528d4887b920deb71b37e09bc7d227bb (patch) | |
tree | 84a650b474530ae2d2d72614899532757d4bb961 /fs/pipe.c | |
parent | c66fb347946ebdd5b10908866ecc9fa05ee2cf3d (diff) | |
download | linux-rt-72083646528d4887b920deb71b37e09bc7d227bb.tar.gz |
Un-inline get_pipe_info() helper function
This avoids some include-file hell, and the function isn't really
important enough to be inlined anyway.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/pipe.c')
-rw-r--r-- | fs/pipe.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index b8997f8c6324..04629f36e397 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -1199,6 +1199,18 @@ 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; |