diff options
| author | Nick Piggin <npiggin@suse.de> | 2008-07-26 04:45:32 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 21:00:06 +0200 |
| commit | 19fd6231279be3c3bdd02ed99f9b0eb195978064 (patch) | |
| tree | ee09121054262d73c551b57114acd855b82a7a82 /include/asm-parisc | |
| parent | mm: lockless pagecache (diff) | |
| download | linux-19fd6231279be3c3bdd02ed99f9b0eb195978064.tar.xz linux-19fd6231279be3c3bdd02ed99f9b0eb195978064.zip | |
mm: spinlock tree_lock
mapping->tree_lock has no read lockers. convert the lock from an rwlock
to a spinlock.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-parisc')
| -rw-r--r-- | include/asm-parisc/cacheflush.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-parisc/cacheflush.h b/include/asm-parisc/cacheflush.h index 2f1e1b05440a..b7ca6dc7fddc 100644 --- a/include/asm-parisc/cacheflush.h +++ b/include/asm-parisc/cacheflush.h @@ -45,9 +45,9 @@ void flush_cache_mm(struct mm_struct *mm); extern void flush_dcache_page(struct page *page); #define flush_dcache_mmap_lock(mapping) \ - write_lock_irq(&(mapping)->tree_lock) + spin_lock_irq(&(mapping)->tree_lock) #define flush_dcache_mmap_unlock(mapping) \ - write_unlock_irq(&(mapping)->tree_lock) + spin_unlock_irq(&(mapping)->tree_lock) #define flush_icache_page(vma,page) do { \ flush_kernel_dcache_page(page); \ |