The patch titled
nommu: ramfs: don't leak pages when adding to page cache fails
has been removed from the -mm tree. Its filename was
nommu-ramfs-dont-leak-pages-when-adding-to-page-cache-fails.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/
------------------------------------------------------
Subject: nommu: ramfs: don't leak pages when adding to page cache fails
From: Johannes Weiner <hannes@xxxxxxxxxxx>
When a ramfs nommu mapping is expanded, contiguous pages are allocated
and added to the pagecache. The caller's reference is then passed on
by moving whole pagevecs to the file lru list.
If the page cache adding fails, make sure that the error path also
moves the pagevec contents which might still contain up to PAGEVEC_SIZE
successfully added pages, of which we would leak references otherwise.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Enrik Berkhan <Enrik.Berkhan@xxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ramfs/file-nommu.c | 1 +
1 file changed, 1 insertion(+)
diff -puN fs/ramfs/file-nommu.c~nommu-ramfs-dont-leak-pages-when-adding-to-page-cache-fails fs/ramfs/file-nommu.c
--- a/fs/ramfs/file-nommu.c~nommu-ramfs-dont-leak-pages-when-adding-to-page-cache-fails
+++ a/fs/ramfs/file-nommu.c
@@ -129,6 +129,7 @@ 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);
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
linux-next.patch
cifs-use-kzfree.patch
s390-use-kzfree.patch
crypto-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
ecryptfs-use-kzfree.patch
memcg-remove-mem_cgroup_calc_mapped_ratio-take2.patch
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