diff options
| author | Helge Deller <deller@gmx.de> | 2009-07-29 23:17:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-08-16 14:26:56 -0700 |
| commit | 2614443191474e4c8619bf59665f9ef820e5276c (patch) | |
| tree | 2420f887cc21cde58b8e18c897808990c226cf45 /fs/xfs/xfs_dmops.c | |
| parent | 04101e4e4ef4ff5035ce5ad4510db02eb54c4985 (diff) | |
parisc: ensure broadcast tlb purge runs single threaded
commit e82a3b75127188f20c7780bec580e148beb29da7 upstream
parisc: ensure broadcast tlb purge runs single threaded
The TLB flushing functions on hppa, which causes PxTLB broadcasts on the system
bus, needs to be protected by irq-safe spinlocks to avoid irq handlers to deadlock
the kernel. The deadlocks only happened during I/O intensive loads and triggered
pretty seldom, which is why this bug went so long unnoticed.
Signed-off-by: Helge Deller <deller@gmx.de>
[edited to use spin_lock_irqsave on UP as well since we'd been locking there
all this time anyway, --kyle]
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/xfs/xfs_dmops.c')
0 files changed, 0 insertions, 0 deletions