The patch titled ramfs-nommu: use generic lru cache has been added to the -mm tree. Its filename is ramfs-nommu-use-generic-lru-cache.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: ramfs-nommu: use generic lru cache From: Johannes Weiner <hannes@xxxxxxxxxxx> Instead of open-coding the lru-list-add pagevec batching when expanding a file mapping from zero, defer to the appropriate page cache function that also takes care of adding the page to the lru list. This is cleaner, saves code and reduces the stack footprint by 16 words worth of pagevec. Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: David Howells <dhowells@xxxxxxxxxx> Cc: Nick Piggin <npiggin@xxxxxxx> Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: MinChan Kim <minchan.kim@xxxxxxxxx> Cc: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx> Cc: Greg Ungerer <gerg@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/ramfs/file-nommu.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff -puN fs/ramfs/file-nommu.c~ramfs-nommu-use-generic-lru-cache fs/ramfs/file-nommu.c --- a/fs/ramfs/file-nommu.c~ramfs-nommu-use-generic-lru-cache +++ a/fs/ramfs/file-nommu.c @@ -59,7 +59,6 @@ const struct inode_operations ramfs_file */ int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize) { - struct pagevec lru_pvec; unsigned long npages, xpages, loop, limit; struct page *pages; unsigned order; @@ -102,24 +101,20 @@ int ramfs_nommu_expand_for_mapping(struc memset(data, 0, newsize); /* attach all the pages to the inode's address space */ - pagevec_init(&lru_pvec, 0); for (loop = 0; loop < npages; loop++) { struct page *page = pages + loop; - ret = add_to_page_cache(page, inode->i_mapping, loop, GFP_KERNEL); + ret = add_to_page_cache_lru(page, inode->i_mapping, loop, + GFP_KERNEL); if (ret < 0) goto add_error; - if (!pagevec_add(&lru_pvec, page)) - __pagevec_lru_add_file(&lru_pvec); - /* prevent the page from being discarded on memory pressure */ SetPageDirty(page); unlock_page(page); } - pagevec_lru_add_file(&lru_pvec); return 0; fsize_exceeded: @@ -128,10 +123,8 @@ int ramfs_nommu_expand_for_mapping(struc return -EFBIG; add_error: - pagevec_lru_add_file(&lru_pvec); - page_cache_release(pages + loop); - for (loop++; loop < npages; loop++) - __free_page(pages + loop); + while (loop < npages) + __free_page(pages + loop++); return ret; } _ Patches currently in -mm which might be from hannes@xxxxxxxxxxx are origin.patch linux-next.patch cifs-use-kzfree.patch vmscan-rename-scmay_swap-to-may_unmap.patch mm-introduce-for_each_populated_zone-macro.patch mm-introduce-for_each_populated_zone-macro-cleanup.patch mm-shrink_all_memory-use-scnr_reclaimed.patch mm-shrink_all_memory-use-scnr_reclaimed-checkpatch-fixes.patch vmscan-clip-swap_cluster_max-in-shrink_all_memory.patch vmscan-respect-higher-order-in-zone_reclaim.patch mm-move-pagevec-stripping-to-save-unlock-relock.patch mm-dont-free-swap-slots-on-page-deactivation.patch mm-remove-pagevec_swap_free.patch nommu-there-is-no-mlock-for-nommu-so-dont-provide-the-bits.patch nommu-make-config_unevictable_lru-available-when-config_mmu=n.patch ramfs-nommu-use-generic-lru-cache.patch ecryptfs-use-kzfree.patch memcg-remove-mem_cgroup_calc_mapped_ratio-take2.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