https://github.com/torvalds/linux
Revision 325fda71d0badc1073dc59f12a948f24ff05796a authored by KAMEZAWA Hiroyuki on 02 February 2010, 21:44:05 UTC, committed by Linus Torvalds on 03 February 2010, 02:11:22 UTC
Otherwise vmalloc_to_page() will BUG(). This also makes the kmem read/write implementation aligned with mem(4): "References to nonexistent locations cause errors to be returned." Here we return -ENXIO (inspired by Hugh) if no bytes have been transfered to/from user space, otherwise return partial read/write results. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 931e80e
Tip revision: 325fda71d0badc1073dc59f12a948f24ff05796a authored by KAMEZAWA Hiroyuki on 02 February 2010, 21:44:05 UTC
devmem: check vmalloc address on kmem read/write
devmem: check vmalloc address on kmem read/write
Tip revision: 325fda7
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 3.1 KB |
| Kconfig.iosched | -rw-r--r-- | 1.8 KB |
| Makefile | -rw-r--r-- | 582 bytes |
| blk-barrier.c | -rw-r--r-- | 10.6 KB |
| blk-cgroup.c | -rw-r--r-- | 9.1 KB |
| blk-cgroup.h | -rw-r--r-- | 3.6 KB |
| blk-core.c | -rw-r--r-- | 67.4 KB |
| blk-exec.c | -rw-r--r-- | 2.6 KB |
| blk-integrity.c | -rw-r--r-- | 9.9 KB |
| blk-ioc.c | -rw-r--r-- | 3.9 KB |
| blk-iopoll.c | -rw-r--r-- | 5.9 KB |
| blk-map.c | -rw-r--r-- | 8.1 KB |
| blk-merge.c | -rw-r--r-- | 10.8 KB |
| blk-settings.c | -rw-r--r-- | 25.9 KB |
| blk-softirq.c | -rw-r--r-- | 4.1 KB |
| blk-sysfs.c | -rw-r--r-- | 12.9 KB |
| blk-tag.c | -rw-r--r-- | 9.9 KB |
| blk-timeout.c | -rw-r--r-- | 5.7 KB |
| blk.h | -rw-r--r-- | 4.5 KB |
| bsg.c | -rw-r--r-- | 23.4 KB |
| cfq-iosched.c | -rw-r--r-- | 98.2 KB |
| compat_ioctl.c | -rw-r--r-- | 22.1 KB |
| deadline-iosched.c | -rw-r--r-- | 11.4 KB |
| elevator.c | -rw-r--r-- | 24.3 KB |
| genhd.c | -rw-r--r-- | 29.9 KB |
| ioctl.c | -rw-r--r-- | 8.2 KB |
| noop-iosched.c | -rw-r--r-- | 2.6 KB |
| scsi_ioctl.c | -rw-r--r-- | 18.0 KB |
Computing file changes ...
