diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-02-13 11:46:08 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2007-02-13 15:35:54 +1100 |
commit | 17e0e27020d028a790d97699aff85a43af5be472 (patch) | |
tree | f3dd43243be6e840dc2b0386e91c4146a4f51620 /arch/m32r/mappi/defconfig.up | |
parent | 44430e0d3916ab6aaf0451fdb811f4f1803b741e (diff) |
[POWERPC] spufs: Fix bitrot of the SPU mmap facility
It looks like we've had some serious bitrot there mostly due to tracking
of address_space's of mmap'ed files getting out of sync with the actual
mmap code. The mfc, mss and psmap were not tracked properly and thus
not invalidated on context switches (oops !)
I also removed the various file->f_mapping = inode->i_mapping;
assignments that were done in the other open() routines since that
is already done for us by __dentry_open.
One improvement we might want to do later is to assign the various
ctx-> fields at mmap time instead of file open/close time so that we
don't call unmap_mapping_range() on thing that have not been mmap'ed
Finally, I added some smp_wmb's after assigning the ctx-> fields to make
sure they are visible to other CPUs. I don't think this is really
necessary as I suspect locking in the fs layer will make that happen
anyway but better safe than sorry.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/m32r/mappi/defconfig.up')
0 files changed, 0 insertions, 0 deletions