Messages in this thread Patch in this message |  | | Date | Sun, 05 May 2002 13:58:55 -0700 | From | Andrew Morton <> | Subject | [patch 8/10] Fix PG_launder |
| |
Set PG_launder against pages which are under VM writeback. So page allocators will throttle against them.
=====================================
--- 2.5.13/mm/page-writeback.c~page_launder-fix Sun May 5 13:32:03 2002 +++ 2.5.13-akpm/mm/page-writeback.c Sun May 5 13:32:03 2002 @@ -354,6 +354,8 @@ int generic_writeback_mapping(struct add lock_page(page); if (TestClearPageDirty(page)) { + if (current->flags & PF_MEMALLOC) + SetPageLaunder(page); err = writepage(page); if (!ret) ret = err; --- 2.5.13/fs/fs-writeback.c~page_launder-fix Sun May 5 13:32:03 2002 +++ 2.5.13-akpm/fs/fs-writeback.c Sun May 5 13:32:03 2002 @@ -17,6 +17,7 @@ #include <linux/spinlock.h> #include <linux/sched.h> #include <linux/fs.h> +#include <linux/mm.h> #include <linux/writeback.h> /** @@ -135,7 +136,7 @@ static void __sync_single_inode(struct i if (mapping->a_ops->writeback_mapping) mapping->a_ops->writeback_mapping(mapping, nr_to_write); else - filemap_fdatawrite(mapping); + generic_writeback_mapping(mapping, NULL); /* Don't write the inode if only I_DIRTY_PAGES was set */ if (dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) --- 2.5.13/mm/filemap.c~page_launder-fix Sun May 5 13:32:03 2002 +++ 2.5.13-akpm/mm/filemap.c Sun May 5 13:32:03 2002 @@ -659,7 +659,6 @@ EXPORT_SYMBOL(wait_on_page_writeback); void unlock_page(struct page *page) { wait_queue_head_t *waitqueue = page_waitqueue(page); - clear_bit(PG_launder, &(page)->flags); smp_mb__before_clear_bit(); if (!TestClearPageLocked(page)) BUG(); @@ -674,7 +673,7 @@ void unlock_page(struct page *page) void end_page_writeback(struct page *page) { wait_queue_head_t *waitqueue = page_waitqueue(page); - clear_bit(PG_launder, &(page)->flags); + ClearPageLaunder(page); smp_mb__before_clear_bit(); if (!TestClearPageWriteback(page)) BUG(); --- 2.5.13/include/linux/page-flags.h~page_launder-fix Sun May 5 13:32:03 2002 +++ 2.5.13-akpm/include/linux/page-flags.h Sun May 5 13:32:03 2002 @@ -174,6 +174,7 @@ extern void get_page_state(struct page_s #define PageLaunder(page) test_bit(PG_launder, &(page)->flags) #define SetPageLaunder(page) set_bit(PG_launder, &(page)->flags) +#define ClearPageLaunder(page) clear_bit(PG_launder, &(page)->flags) #define SetPagePrivate(page) set_bit(PG_private, &(page)->flags) #define ClearPagePrivate(page) clear_bit(PG_private, &(page)->flags)
- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |