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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-11 20:05:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-11 20:05:37 -0700 |
| commit | 4b4f1d017815f96737ca4a62f90e5a1f0b9f02d6 (patch) | |
| tree | c95ae92ec01cabf6c2a40d31a31da6a4d9256816 /fs/char_dev.c | |
| parent | 875287caa067492779670f5fb3b98ec8dcfe2cb0 (diff) | |
| parent | aa7dfb8954ccf49e026ba13d12991a4eb7defb96 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (87 commits)
nilfs2: get rid of bd_mount_sem use from nilfs
nilfs2: correct exclusion control in nilfs_remount function
nilfs2: simplify remaining sget() use
nilfs2: get rid of sget use for checking if current mount is present
nilfs2: get rid of sget use for acquiring nilfs object
nilfs2: remove meaningless EBUSY case from nilfs_get_sb function
remove the call to ->write_super in __sync_filesystem
nilfs2: call nilfs2_write_super from nilfs2_sync_fs
jffs2: call jffs2_write_super from jffs2_sync_fs
ufs: add ->sync_fs
sysv: add ->sync_fs
hfsplus: add ->sync_fs
hfs: add ->sync_fs
fat: add ->sync_fs
ext2: add ->sync_fs
exofs: add ->sync_fs
bfs: add ->sync_fs
affs: add ->sync_fs
sanitize ->fsync() for affs
repair bfs_write_inode(), switch bfs to simple_fsync()
...
Diffstat (limited to 'fs/char_dev.c')
| -rw-r--r-- | fs/char_dev.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/char_dev.c b/fs/char_dev.c index 38f71222a55..b7c9d5187a7 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -375,7 +375,6 @@ static int chrdev_open(struct inode *inode, struct file *filp) p = inode->i_cdev; if (!p) { inode->i_cdev = p = new; - inode->i_cindex = idx; list_add(&inode->i_devices, &p->list); new = NULL; } else if (!cdev_get(p)) @@ -405,6 +404,18 @@ static int chrdev_open(struct inode *inode, struct file *filp) return ret; } +int cdev_index(struct inode *inode) +{ + int idx; + struct kobject *kobj; + + kobj = kobj_lookup(cdev_map, inode->i_rdev, &idx); + if (!kobj) + return -1; + kobject_put(kobj); + return idx; +} + void cd_forget(struct inode *inode) { spin_lock(&cdev_lock); @@ -557,6 +568,7 @@ EXPORT_SYMBOL(cdev_init); EXPORT_SYMBOL(cdev_alloc); EXPORT_SYMBOL(cdev_del); EXPORT_SYMBOL(cdev_add); +EXPORT_SYMBOL(cdev_index); EXPORT_SYMBOL(register_chrdev); EXPORT_SYMBOL(unregister_chrdev); EXPORT_SYMBOL(directly_mappable_cdev_bdi); |