Define i_readcount_inc/dec() functions to be called from the VFS layer.
Changelog:
- renamed iget/iput_readcount to i_readcount_inc/dec (Dave Chinner's suggestion)
- removed i_lock in iput_readcount() (based on comments:Dave Chinner,Eric Paris)
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxx>
Acked-by: Eric Paris <eparis@xxxxxxxxxx>
---
include/linux/fs.h | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index ef85322..a3e8f02 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2186,6 +2186,26 @@ static inline void allow_write_access(struct file *file)
if (file)
atomic_inc(&file->f_path.dentry->d_inode->i_writecount);
}
+#ifdef CONFIG_IMA
+static inline void i_readcount_dec(struct inode *inode)
+{
+ BUG_ON(!atomic_read(&inode->i_readcount));
+ atomic_dec(&inode->i_readcount);
+}
+static inline void i_readcount_inc(struct inode *inode)
+{
+ atomic_inc(&inode->i_readcount);
+}
+#else
+static inline void i_readcount_dec(struct inode *inode)
+{
+ return;
+}
+static inline void i_readcount_inc(struct inode *inode)
+{
+ return;
+}
+#endif
extern int do_pipe_flags(int *, int);
extern struct file *create_read_pipe(struct file *f, int flags);
extern struct file *create_write_pipe(int flags);
--
1.7.3.4
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
