Tejun Heo a4e8b91254 sysfs: move sysfs file poll implementation to sysfs_open_dirent ... Sysfs file poll implementation is scattered over sysfs and kobject. Event numbering is done in sysfs_dirent but wait itself is done on kobject. This not only unecessarily bloats both kobject and sysfs_dirent but is also buggy - if a sysfs_dirent is removed while there still are pollers, the associaton betwen the kobject and sysfs_dirent breaks and kobject may be freed with the pollers still sleeping on it. This patch moves whole poll implementation into sysfs_open_dirent. Each time a sysfs_open_dirent is created, event number restarts from 1 and pollers sleep on sysfs_open_dirent. As event sequence number is meaningless without any open file and pollers should have open file and thus sysfs_open_dirent, this ephemeral event counting works and is a saner implementation. This patch fixes the dnagling sleepers bug and reduces the sizes of kobject and sysfs_dirent by one pointer. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2007-10-12 14:51:11 -07:00
..
bin.c	sysfs: make s_elem an anonymous union	2007-10-12 14:51:10 -07:00
dir.c	sysfs: move sysfs file poll implementation to sysfs_open_dirent	2007-10-12 14:51:11 -07:00
file.c	sysfs: move sysfs file poll implementation to sysfs_open_dirent	2007-10-12 14:51:11 -07:00
group.c	sysfs: Remove first pass at shadow directory support	2007-10-12 14:51:03 -07:00
inode.c	sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir	2007-10-12 14:51:11 -07:00
Makefile
mount.c	sysfs: make sysfs_root a regular directory dirent	2007-10-12 14:51:11 -07:00
symlink.c	sysfs: make s_elem an anonymous union	2007-10-12 14:51:10 -07:00
sysfs.h	sysfs: move sysfs file poll implementation to sysfs_open_dirent	2007-10-12 14:51:11 -07:00