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| author | Gerald Schaefer <geraldsc@de.ibm.com> | 2005-06-05 02:43:33 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-05 04:13:00 +0400 |
| commit | f26d583e41aedad8159acf9533fa287d7209dfbf (patch) | |
| tree | 215ef8ae71cd2b6bb6fec824d1db4a9f39db97ca /arch/s390/appldata/appldata_os.c | |
| parent | 595bf2aacae96d0f87352a1ff5476b79e52e212f (diff) | |
| download | linux-f26d583e41aedad8159acf9533fa287d7209dfbf.tar.xz | |
[PATCH] s390: deadlock in appldata
The system might hang when using appldata_mem with high I/O traffic and a
large number of devices. The spinlocks bdev_lock and swaplock are acquired
via calls to si_meminfo() and si_swapinfo() from a tasklet, i.e. interrupt
context, which can lead to a deadlock. Replace tasklet with work queue.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390/appldata/appldata_os.c')
| -rw-r--r-- | arch/s390/appldata/appldata_os.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c index b83f07484551..e0a476bf4fd6 100644 --- a/arch/s390/appldata/appldata_os.c +++ b/arch/s390/appldata/appldata_os.c @@ -49,7 +49,7 @@ struct appldata_os_per_cpu { u32 per_cpu_softirq; /* ... spent in softirqs */ u32 per_cpu_iowait; /* ... spent while waiting for I/O */ // <-- New in 2.6 -}; +} __attribute__((packed)); struct appldata_os_data { u64 timestamp; @@ -75,7 +75,7 @@ struct appldata_os_data { /* per cpu data */ struct appldata_os_per_cpu os_cpu[0]; -}; +} __attribute__((packed)); static struct appldata_os_data *appldata_os_data; |