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| author | Stefan Raspl <raspl@linux.vnet.ibm.com> | 2009-05-19 09:59:08 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-19 10:29:21 +0200 |
| commit | fd51d251e4cdb21f68e9dbc4336514d64a105a79 (patch) | |
| tree | 478fb26aea6b7e79532f33cc5949b4fece18cdfc /kernel/trace/trace_output.h | |
| parent | 143c145e3a475065a4be661468d0df1bd0b25f74 (diff) | |
blktrace: remove debugfs entries on bad path
debugfs directory entries for devices are not removed on some
of the failure pathes in do_blk_trace_setup().
One way to reproduce is to start blktrace on multiple devices
with insufficient Vmalloc space: Devices will fail with
a message like this:
BLKTRACESETUP(2) /dev/sdu failed: 5/Input/output error
If so, the respective entries in debugfs
(e.g. /sys/kernel/debug/block/sdu) will remain and subsequent
attempts to start blktrace on the respective devices will not
succeed due to existing directories.
[ Impact: fix /debug/tracing file cleanup corner case ]
Signed-off-by: Stefan Raspl <stefan.raspl@linux.vnet.ibm.com>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: schwidefsky@de.ibm.com
Cc: heiko.carstens@de.ibm.com
LKML-Reference: <4A1266CC.5040801@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_output.h')
0 files changed, 0 insertions, 0 deletions