diff options
| author | Hugh Dickins | 2005-11-23 22:37:39 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2005-11-24 01:08:38 +0100 |
| commit | 7ce774b4808c019c2f143ff5dea1a1b094ff01e1 (patch) | |
| tree | 604b9e5395cb70a8cfef0fcb05464dcf3dfdba23 | |
| parent | [PATCH] mm: powerpc ptlock comments (diff) | |
| download | kernel-qcow2-linux-7ce774b4808c019c2f143ff5dea1a1b094ff01e1.tar.gz kernel-qcow2-linux-7ce774b4808c019c2f143ff5dea1a1b094ff01e1.tar.xz kernel-qcow2-linux-7ce774b4808c019c2f143ff5dea1a1b094ff01e1.zip | |
[PATCH] mm: powerpc init_mm without ptlock
Restore an earlier mod which went missing in the powerpc reshuffle: the 4xx
mmu_mapin_ram does not need to take init_mm.page_table_lock.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/powerpc/mm/4xx_mmu.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/powerpc/mm/4xx_mmu.c b/arch/powerpc/mm/4xx_mmu.c index b7bcbc232f39..4d006aa1a0d1 100644 --- a/arch/powerpc/mm/4xx_mmu.c +++ b/arch/powerpc/mm/4xx_mmu.c @@ -110,13 +110,11 @@ unsigned long __init mmu_mapin_ram(void) pmd_t *pmdp; unsigned long val = p | _PMD_SIZE_16M | _PAGE_HWEXEC | _PAGE_HWWRITE; - spin_lock(&init_mm.page_table_lock); pmdp = pmd_offset(pgd_offset_k(v), v); pmd_val(*pmdp++) = val; pmd_val(*pmdp++) = val; pmd_val(*pmdp++) = val; pmd_val(*pmdp++) = val; - spin_unlock(&init_mm.page_table_lock); v += LARGE_PAGE_SIZE_16M; p += LARGE_PAGE_SIZE_16M; @@ -127,10 +125,8 @@ unsigned long __init mmu_mapin_ram(void) pmd_t *pmdp; unsigned long val = p | _PMD_SIZE_4M | _PAGE_HWEXEC | _PAGE_HWWRITE; - spin_lock(&init_mm.page_table_lock); pmdp = pmd_offset(pgd_offset_k(v), v); pmd_val(*pmdp) = val; - spin_unlock(&init_mm.page_table_lock); v += LARGE_PAGE_SIZE_4M; p += LARGE_PAGE_SIZE_4M; |