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Date: Fri, 29 Sep 2006 09:53:33 +0800 From: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> To: LKML <linux-kernel@...r.kernel.org> Subject: [PATCH] Add flag __GFP_NOFAIL when allocating block From: Zhang, Yanmin <yanmin.zhang@...el.com> Function journal_write_metadata_buffer doesn't estimate the return value of jbd_slab_alloc. If the allocation fails, later jbd_slab_free or memcpy will cause kernel oops. Add flag __GFP_NOFAIL when allocating block. The patch is against 2.6.18-mm1. Signed-off-by: Zhang Yanmin <yanmin.zhang@...el.com> --- --- linux-2.6.18_mm1/fs/jbd/journal.c 2006-09-29 07:19:49.000000000 -0600 +++ linux-2.6.18_mm1_fix/fs/jbd/journal.c 2006-09-30 03:01:38.000000000 -0600 @@ -329,7 +329,7 @@ repeat: char *tmp; jbd_unlock_bh_state(bh_in); - tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS); + tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS|__GFP_NOFAIL); jbd_lock_bh_state(bh_in); if (jh_in->b_frozen_data) { jbd_slab_free(tmp, bh_in->b_size); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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