lvm2/driver/device-mapper/dmfs.h

#ifndef LINUX_DMFS_H
#define LINUX_DMFS_H

struct dmfs_i {
        struct semaphore sem;
        struct mapped_device *md;
        struct dentry *dentry;
        struct list_head errors;
	int status;
};

#define DMFS_I(inode) ((struct dmfs_i *)(inode)->u.generic_ip)


extern int dmfs_init(void) __init;
extern int dmfs_exit(void) __exit;

struct inode *dmfs_new_inode(struct super_block *sb, int mode);
struct inode *dmfs_new_private_inode(struct super_block *sb, int mode);

void dmfs_add_error(struct inode *inode, unsigned num, char *str);
void dmfs_zap_errors(struct inode *inode);


#endif /* LINUX_DMFS_H */
Tidy and changes to make code smaller. o Created dmfs.h as a private header for the filesystem code o Using seq_file.[ch] written by Al Viro as a generic mechanism for /proc style files which have one record per line. We use a slight modification here, so if you are using a recent -ac kernel you'll need to replace the existing seq_file.[ch] with the ones here and do a bit of editing to make it work. I'll submit the changes to Al Viro shortly as they are very small and I think make sense generally. o Using fail_writepage() o Init code for filesystem now all in dmfs-super.c o Some common code reduction amoung the dmfs-*.c files o Auto allocation of major device number (default). You can specify a particular major by using a module argument. If built in then you don't get this option at the moment but it could be added if required. o Hotplug support o General tidying o Updated projects.txt file o Patches updated to 2.4.14 2001-11-07 15:12:56 +03:00			`#ifndef LINUX_DMFS_H`
			`#define LINUX_DMFS_H`

			`struct dmfs_i {`
			`struct semaphore sem;`
			`struct mapped_device *md;`
			`struct dentry *dentry;`
			`struct list_head errors;`
o Fix module ref counts so that you can actually unload dm-mod N.B. This means that you have to take very great care in the event that you want to access the dcache tree from in kernel o Added extra field to allow out of memory conditions to result in the correct error code. (This hasn't received a lot of testing...) I've ditched the final project (which would have cleared my whole list) since its got other complications which I don't have time to fix right now. Still as Meatloaf says, two out of three ain't bad! 2001-11-10 20:11:36 +03:00			`int status;`
Tidy and changes to make code smaller. o Created dmfs.h as a private header for the filesystem code o Using seq_file.[ch] written by Al Viro as a generic mechanism for /proc style files which have one record per line. We use a slight modification here, so if you are using a recent -ac kernel you'll need to replace the existing seq_file.[ch] with the ones here and do a bit of editing to make it work. I'll submit the changes to Al Viro shortly as they are very small and I think make sense generally. o Using fail_writepage() o Init code for filesystem now all in dmfs-super.c o Some common code reduction amoung the dmfs-*.c files o Auto allocation of major device number (default). You can specify a particular major by using a module argument. If built in then you don't get this option at the moment but it could be added if required. o Hotplug support o General tidying o Updated projects.txt file o Patches updated to 2.4.14 2001-11-07 15:12:56 +03:00			`};`

			`#define DMFS_I(inode) ((struct dmfs_i *)(inode)->u.generic_ip)`


			`extern int dmfs_init(void) __init;`
			`extern int dmfs_exit(void) __exit;`

			`struct inode dmfs_new_inode(struct super_block sb, int mode);`
			`struct inode dmfs_new_private_inode(struct super_block sb, int mode);`

			`void dmfs_add_error(struct inode inode, unsigned num, char str);`
			`void dmfs_zap_errors(struct inode *inode);`



			`#endif /* LINUX_DMFS_H */`