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| author | Anton Blanchard <anton@samba.org> | 2011-09-14 09:43:15 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-11 09:37:11 -0800 |
| commit | eaeafcd898108e4e026faf43ca41817f5de6ee66 (patch) | |
| tree | 363bec39cbe790f0aa86c657214753ad4808e270 /lib/parser.c | |
| parent | 71b1a9d35d6cbd2e37c1101ca5f779ca55f7fb03 (diff) | |
| download | kernel_samsung_smdk4412-eaeafcd898108e4e026faf43ca41817f5de6ee66.zip kernel_samsung_smdk4412-eaeafcd898108e4e026faf43ca41817f5de6ee66.tar.gz kernel_samsung_smdk4412-eaeafcd898108e4e026faf43ca41817f5de6ee66.tar.bz2 | |
powerpc: Fix deadlock in icswx code
commit 8bdafa39a47265bc029838b35cc6585f69224afa upstream.
The icswx code introduced an A-B B-A deadlock:
CPU0 CPU1
---- ----
lock(&anon_vma->mutex);
lock(&mm->mmap_sem);
lock(&anon_vma->mutex);
lock(&mm->mmap_sem);
Instead of using the mmap_sem to keep mm_users constant, take the
page table spinlock.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/parser.c')
0 files changed, 0 insertions, 0 deletions