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| author | Nick Piggin <npiggin@suse.de> | 2006-03-22 00:08:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:54:02 -0800 |
| commit | 7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29 (patch) | |
| tree | 405a96eade34845dabe2f125b6c5eb095846869d /arch/sparc | |
| parent | 70dc991d66cac40fdb07346dba2b5d862d732c34 (diff) | |
| download | lwn-7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29.tar.gz lwn-7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29.zip | |
[PATCH] remove set_page_count() outside mm/
set_page_count usage outside mm/ is limited to setting the refcount to 1.
Remove set_page_count from outside mm/, and replace those users with
init_page_count() and set_page_refcounted().
This allows more debug checking, and tighter control on how code is allowed
to play around with page->_count.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/sun4d_smp.c | 6 | ||||
| -rw-r--r-- | arch/sparc/kernel/sun4m_smp.c | 6 | ||||
| -rw-r--r-- | arch/sparc/mm/init.c | 6 |
3 files changed, 9 insertions, 9 deletions
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c index 40d426cce824..4219dd2ce3a2 100644 --- a/arch/sparc/kernel/sun4d_smp.c +++ b/arch/sparc/kernel/sun4d_smp.c @@ -266,19 +266,19 @@ void __init smp4d_boot_cpus(void) /* Free unneeded trap tables */ ClearPageReserved(virt_to_page(trapbase_cpu1)); - set_page_count(virt_to_page(trapbase_cpu1), 1); + init_page_count(virt_to_page(trapbase_cpu1)); free_page((unsigned long)trapbase_cpu1); totalram_pages++; num_physpages++; ClearPageReserved(virt_to_page(trapbase_cpu2)); - set_page_count(virt_to_page(trapbase_cpu2), 1); + init_page_count(virt_to_page(trapbase_cpu2)); free_page((unsigned long)trapbase_cpu2); totalram_pages++; num_physpages++; ClearPageReserved(virt_to_page(trapbase_cpu3)); - set_page_count(virt_to_page(trapbase_cpu3), 1); + init_page_count(virt_to_page(trapbase_cpu3)); free_page((unsigned long)trapbase_cpu3); totalram_pages++; num_physpages++; diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c index a21f27d10e55..fbbd8a474c4c 100644 --- a/arch/sparc/kernel/sun4m_smp.c +++ b/arch/sparc/kernel/sun4m_smp.c @@ -233,21 +233,21 @@ void __init smp4m_boot_cpus(void) /* Free unneeded trap tables */ if (!cpu_isset(i, cpu_present_map)) { ClearPageReserved(virt_to_page(trapbase_cpu1)); - set_page_count(virt_to_page(trapbase_cpu1), 1); + init_page_count(virt_to_page(trapbase_cpu1)); free_page((unsigned long)trapbase_cpu1); totalram_pages++; num_physpages++; } if (!cpu_isset(2, cpu_present_map)) { ClearPageReserved(virt_to_page(trapbase_cpu2)); - set_page_count(virt_to_page(trapbase_cpu2), 1); + init_page_count(virt_to_page(trapbase_cpu2)); free_page((unsigned long)trapbase_cpu2); totalram_pages++; num_physpages++; } if (!cpu_isset(3, cpu_present_map)) { ClearPageReserved(virt_to_page(trapbase_cpu3)); - set_page_count(virt_to_page(trapbase_cpu3), 1); + init_page_count(virt_to_page(trapbase_cpu3)); free_page((unsigned long)trapbase_cpu3); totalram_pages++; num_physpages++; diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c index c03babaa0498..898669732466 100644 --- a/arch/sparc/mm/init.c +++ b/arch/sparc/mm/init.c @@ -383,7 +383,7 @@ void map_high_region(unsigned long start_pfn, unsigned long end_pfn) struct page *page = pfn_to_page(tmp); ClearPageReserved(page); - set_page_count(page, 1); + init_page_count(page); __free_page(page); totalhigh_pages++; } @@ -480,7 +480,7 @@ void free_initmem (void) p = virt_to_page(addr); ClearPageReserved(p); - set_page_count(p, 1); + init_page_count(p); __free_page(p); totalram_pages++; num_physpages++; @@ -497,7 +497,7 @@ void free_initrd_mem(unsigned long start, unsigned long end) struct page *p = virt_to_page(start); ClearPageReserved(p); - set_page_count(p, 1); + init_page_count(p); __free_page(p); num_physpages++; } |