| commit | 94bebf4d1b8e7719f0f3944c037a21cfd99a4af7 | |
| author | Oliver Neukum <oliver@neukum.org> | |
| Wed, 20 Dec 2006 09:52:44 +0000 (20 10:52 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Wed, 7 Feb 2007 18:37:13 +0000 (7 10:37 -0800) | ||
| tree | 25c6ba1836e74f608b4e434b4f0f4d5c28b11de1 | treesnapshot (tar.gz zip) |
| parent | cb986b749c7178422bfbc982cd30e04d5db54bbc | commitdiff |
Driver core: fix race in sysfs between sysfs_remove_file() and read()/write()
This patch prevents a race between IO and removing a file from sysfs.
It introduces a list of sysfs_buffers associated with a file at the inode.
Upon removal of a file the list is walked and the buffers marked orphaned.
IO to orphaned buffers fails with -ENODEV. The driver can safely free
associated data structures or be unloaded.
Signed-off-by: Oliver Neukum <oliver@neukum.name>
Acked-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch prevents a race between IO and removing a file from sysfs.
It introduces a list of sysfs_buffers associated with a file at the inode.
Upon removal of a file the list is walked and the buffers marked orphaned.
IO to orphaned buffers fails with -ENODEV. The driver can safely free
associated data structures or be unloaded.
Signed-off-by: Oliver Neukum <oliver@neukum.name>
Acked-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>