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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2012-08-30 18:52:54 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-03 11:14:06 +0200 |
| commit | d5feaea364281a7e9b80b4712e790ab908d61711 (patch) | |
| tree | 2ebb9eed3eee9df643e3a3657ce89311b1024930 /Documentation/power/tricks.txt | |
| parent | Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 (diff) | |
| download | linux-d5feaea364281a7e9b80b4712e790ab908d61711.tar.xz linux-d5feaea364281a7e9b80b4712e790ab908d61711.zip | |
s390/mm: fix deadlock in unmap_hugepage_range()
git commit cd2934a3 moved the flush_tlb_range() within
__unmap_hugepage_range() inside the mm->page_table_lock, which
triggered a deadlock in s390 tlb flushing code. __tlb_flush_mm_cond()
also tries to acquire the mm->page_table_lock, but that is not needed
because all callers already have mm->mmap_sem or mm->page_table_lock,
so it can be safely removed to fix the deadlock.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Documentation/power/tricks.txt')
0 files changed, 0 insertions, 0 deletions