The patch titled Subject: ext4: warn if direct reclaim tries to writeback pages has been removed from the -mm tree. Its filename was ext4-warn-if-direct-reclaim-tries-to-writeback-pages.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: Mel Gorman <mgorman@xxxxxxx> Subject: ext4: warn if direct reclaim tries to writeback pages Direct reclaim should never writeback pages. Warn if an attempt is made. Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Cc: Dave Chinner <david@xxxxxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx> Cc: Johannes Weiner <jweiner@xxxxxxxxxx> Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Minchan Kim <minchan.kim@xxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Alex Elder <aelder@xxxxxxx> Cc: Theodore Ts'o <tytso@xxxxxxx> Cc: Chris Mason <chris.mason@xxxxxxxxxx> Cc: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/ext4/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff -puN fs/ext4/inode.c~ext4-warn-if-direct-reclaim-tries-to-writeback-pages fs/ext4/inode.c --- a/fs/ext4/inode.c~ext4-warn-if-direct-reclaim-tries-to-writeback-pages +++ a/fs/ext4/inode.c @@ -1811,8 +1811,12 @@ static int ext4_writepage(struct page *p * We don't want to do block allocation, so redirty * the page and return. We may reach here when we do * a journal commit via journal_submit_inode_data_buffers. - * We can also reach here via shrink_page_list + * We can also reach here via shrink_page_list but it + * should never be for direct reclaim so warn if that + * happens */ + WARN_ON_ONCE((current->flags & (PF_MEMALLOC|PF_KSWAPD)) == + PF_MEMALLOC); goto redirty_page; } if (commit_write) _ Patches currently in -mm which might be from mgorman@xxxxxxx are origin.patch mm-page-writebackc-make-determine_dirtyable_memory-static-again.patch thp-tail-page-refcounting-fix-5.patch powerpc-remove-superfluous-pagetail-checks-on-the-pte-gup_fast.patch powerpc-get_hugepte-dont-put_page-the-wrong-page.patch powerpc-gup_hugepte-avoid-to-free-the-head-page-too-many-times.patch powerpc-gup_hugepte-support-thp-based-tail-recounting.patch powerpc-gup_huge_pmd-return-0-if-pte-changes.patch s390-gup_huge_pmd-support-thp-tail-recounting.patch s390-gup_huge_pmd-return-0-if-pte-changes.patch sparc-gup_pte_range-support-thp-based-tail-recounting.patch thp-share-get_huge_page_tail.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html