Revision be14eb619108fa8b7120eb2c42d66d5f623ae10e authored by Brian King on 10 September 2010, 07:03:21 UTC, committed by Jens Axboe on 10 September 2010, 07:03:21 UTC
While testing CPU DLPAR, the following problem was discovered. We were DLPAR removing the first CPU, which in this case was logical CPUs 0-3. CPUs 0-2 were already marked offline and we were in the process of offlining CPU 3. After marking the CPU inactive and offline in cpu_disable, but before the cpu was completely idle (cpu_die), we ended up in __make_request on CPU 3. There we looked at the topology map to see which CPU to complete the I/O on and found no CPUs in the cpu_sibling_map. This resulted in the block layer setting the completion cpu to be NR_CPUS, which then caused an oops when we tried to complete the I/O. Fix this by sanity checking the value we return from blk_cpu_to_group to be a valid cpu value. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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Kconfig | -rw-r--r-- | 3.2 KB |
Makefile | -rw-r--r-- | 463 bytes |
aops.c | -rw-r--r-- | 48.3 KB |
aops.h | -rw-r--r-- | 3.9 KB |
attrib.c | -rw-r--r-- | 89.8 KB |
attrib.h | -rw-r--r-- | 4.2 KB |
bitmap.c | -rw-r--r-- | 5.5 KB |
bitmap.h | -rw-r--r-- | 3.5 KB |
collate.c | -rw-r--r-- | 3.6 KB |
collate.h | -rw-r--r-- | 1.7 KB |
compress.c | -rw-r--r-- | 29.1 KB |
debug.c | -rw-r--r-- | 5.3 KB |
debug.h | -rw-r--r-- | 2.2 KB |
dir.c | -rw-r--r-- | 52.4 KB |
dir.h | -rw-r--r-- | 1.6 KB |
endian.h | -rw-r--r-- | 2.2 KB |
file.c | -rw-r--r-- | 66.1 KB |
index.c | -rw-r--r-- | 14.8 KB |
index.h | -rw-r--r-- | 5.5 KB |
inode.c | -rw-r--r-- | 96.8 KB |
inode.h | -rw-r--r-- | 11.0 KB |
layout.h | -rw-r--r-- | 97.0 KB |
lcnalloc.c | -rw-r--r-- | 32.4 KB |
lcnalloc.h | -rw-r--r-- | 5.7 KB |
logfile.c | -rw-r--r-- | 28.2 KB |
logfile.h | -rw-r--r-- | 13.5 KB |
malloc.h | -rw-r--r-- | 3.1 KB |
mft.c | -rw-r--r-- | 99.5 KB |
mft.h | -rw-r--r-- | 4.0 KB |
mst.c | -rw-r--r-- | 6.9 KB |
namei.c | -rw-r--r-- | 14.1 KB |
ntfs.h | -rw-r--r-- | 5.0 KB |
quota.c | -rw-r--r-- | 3.6 KB |
quota.h | -rw-r--r-- | 1.2 KB |
runlist.c | -rw-r--r-- | 59.5 KB |
runlist.h | -rw-r--r-- | 3.3 KB |
super.c | -rw-r--r-- | 101.1 KB |
sysctl.c | -rw-r--r-- | 2.3 KB |
sysctl.h | -rw-r--r-- | 1.4 KB |
time.h | -rw-r--r-- | 3.5 KB |
types.h | -rw-r--r-- | 2.0 KB |
unistr.c | -rw-r--r-- | 12.2 KB |
upcase.c | -rw-r--r-- | 3.8 KB |
usnjrnl.c | -rw-r--r-- | 2.7 KB |
usnjrnl.h | -rw-r--r-- | 9.1 KB |
volume.h | -rw-r--r-- | 6.8 KB |
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