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agp: don't lock pages

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AGP should not need to lock pages. They are not protecting any race
because there is no lock_page calls, only SetPageLocked.

This is causing hangs with d00806b183.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Nick Piggin 2007-07-25 13:19:22 +02:00 committed by Dave Airlie
parent c99c108ac3
commit a51b34593f
3 changed files with 0 additions and 5 deletions
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2
drivers/char/agp/generic.c
View File

@ -1170,7 +1170,6 @@ void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
map_page_into_agp(page);
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
@ -1187,7 +1186,6 @@ void agp_generic_destroy_page(void *addr)
page = virt_to_page(addr);
unmap_page_from_agp(page);
put_page(page);
unlock_page(page);
free_page((unsigned long)addr);
atomic_dec(&agp_bridge->current_memory_agp);
}

2
drivers/char/agp/intel-agp.c
View File

@ -213,7 +213,6 @@ static void *i8xx_alloc_pages(void)
}
global_flush_tlb();
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
@ -229,7 +228,6 @@ static void i8xx_destroy_pages(void *addr)
change_page_attr(page, 4, PAGE_KERNEL);
global_flush_tlb();
put_page(page);
unlock_page(page);
__free_pages(page, 2);
atomic_dec(&agp_bridge->current_memory_agp);
}

1
drivers/char/agp/sgi-agp.c
View File

@ -51,7 +51,6 @@ static void *sgi_tioca_alloc_page(struct agp_bridge_data *bridge)
return NULL;
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}