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    sysfs, kernfs: make inode number ida per kernfs_root · bc755553
    Tejun Heo 提交于
    kernfs is being updated to allow multiple sysfs_dirent hierarchies so
    that it can also be used by other users.  Currently, inode number is
    allocated using a global ida, sysfs_ino_ida; however, inos for
    different hierarchies should be handled separately.
    
    This patch makes ino allocation per kernfs_root.  sysfs_ino_ida is
    replaced by kernfs_root->ino_ida and sysfs_new_dirent() is updated to
    take @root and allocate ino from it.  ida_simple_get/remove() are used
    instead of sysfs_ino_lock and sysfs_alloc/free_ino().
    Signed-off-by: NTejun Heo <tj@kernel.org>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    bc755553
dir.c 24.4 KB