diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2009-05-21 16:01:00 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:36:09 -0400 |
| commit | 9fd5746fd3d7838bf6ff991d50f1257057d1156f (patch) | |
| tree | e0afe14ea9415b0e54c40703bb44acfec100a4b3 /include/linux | |
| parent | ebc1ac164560a241d9bf1b7519062910c3f90a01 (diff) | |
fs: Remove i_cindex from struct inode
The only user of the i_cindex element in the inode structure is used
is by the firewire drivers. As part of an attempt to slim down the
inode structure to save memory --- since a typical Linux system will
have hundreds of thousands if not millions of inodes cached, a
reduction in the size inode has high leverage.
The firewire driver does not need i_cindex in any fast path, so it's
simple enough to calculate when it is needed, instead of wasting space
in the inode structure.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: krh@redhat.com
Cc: stefanr@s5r6.in-berlin.de
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cdev.h | 2 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/cdev.h b/include/linux/cdev.h index fb4591977b0..f389e319a45 100644 --- a/include/linux/cdev.h +++ b/include/linux/cdev.h @@ -28,6 +28,8 @@ int cdev_add(struct cdev *, dev_t, unsigned); void cdev_del(struct cdev *); +int cdev_index(struct inode *inode); + void cd_forget(struct inode *); extern struct backing_dev_info directly_mappable_cdev_bdi; diff --git a/include/linux/fs.h b/include/linux/fs.h index e7833ef5d1d..bcd63706db8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -751,7 +751,6 @@ struct inode { struct block_device *i_bdev; struct cdev *i_cdev; }; - int i_cindex; __u32 i_generation; |