From: Andrew Morton <[EMAIL PROTECTED]> Account for the number of byte writes which this process caused to not happen after all.
Cc: Jay Lan <[EMAIL PROTECTED]> Cc: Shailabh Nagar <[EMAIL PROTECTED]> Cc: Balbir Singh <[EMAIL PROTECTED]> Cc: Chris Sturtivant <[EMAIL PROTECTED]> Cc: Tony Ernst <[EMAIL PROTECTED]> Cc: Guillaume Thouvenin <[EMAIL PROTECTED]> Cc: David Wright <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> --- fs/buffer.c | 7 ++++++- mm/truncate.c | 4 +++- 2 files changed, 9 insertions(+), 2 deletions(-) diff -puN fs/buffer.c~io-accounting-write-cancel-accounting fs/buffer.c --- a/fs/buffer.c~io-accounting-write-cancel-accounting +++ a/fs/buffer.c @@ -2823,8 +2823,13 @@ int try_to_free_buffers(struct page *pag * could encounter a non-uptodate page, which is unresolvable. * This only applies in the rare case where try_to_free_buffers * succeeds but the page is not freed. + * + * Also, during truncate, discard_buffer will have marked all + * the page's buffers clean. We discover that here and clean + * the page also. */ - clear_page_dirty(page); + if (test_clear_page_dirty(page)) + task_io_account_cancelled_write(PAGE_CACHE_SIZE); } out: if (buffers_to_free) { diff -puN mm/truncate.c~io-accounting-write-cancel-accounting mm/truncate.c --- a/mm/truncate.c~io-accounting-write-cancel-accounting +++ a/mm/truncate.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/pagemap.h> #include <linux/pagevec.h> +#include <linux/task_io_accounting_ops.h> #include <linux/buffer_head.h> /* grr. try_to_release_page, do_invalidatepage */ @@ -69,7 +70,8 @@ truncate_complete_page(struct address_sp if (PagePrivate(page)) do_invalidatepage(page, 0); - clear_page_dirty(page); + if (test_clear_page_dirty(page)) + task_io_account_cancelled_write(PAGE_CACHE_SIZE); ClearPageUptodate(page); ClearPageMappedToDisk(page); remove_from_page_cache(page); _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/