The patch titled
mm: fix XIP file writes
has been added to the -mm tree. Its filename is
mm-fix-xip-file-writes.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: mm: fix XIP file writes
From: Nick Piggin <npiggin@xxxxxxx>
Writing to XIP files at a non-page-aligned offset results in data corruption
because the writes were always sent to the start of the page.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: Carsten Otte <cotte@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/filemap_xip.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/filemap_xip.c~mm-fix-xip-file-writes mm/filemap_xip.c
--- a/mm/filemap_xip.c~mm-fix-xip-file-writes
+++ a/mm/filemap_xip.c
@@ -314,7 +314,7 @@ __xip_file_write(struct file *filp, cons
fault_in_pages_readable(buf, bytes);
kaddr = kmap_atomic(page, KM_USER0);
copied = bytes -
- __copy_from_user_inatomic_nocache(kaddr, buf, bytes);
+ __copy_from_user_inatomic_nocache(kaddr + offset, buf, bytes);
kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(page);
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
mm-fix-xip-file-writes.patch
git-jfs.patch
nfs-use-gfp_nofs-preloads-for-radix-tree-insertion.patch
slub-use-non-atomic-bit-unlock.patch
radix-tree-avoid-atomic-allocations-for-preloaded-insertions.patch
mm-dont-allow-ioremapping-of-ranges-larger-than-vmalloc-space.patch
vt-bitlock-fix.patch
radix_treeh-trivial-comment-correction.patch
inotify-fix-race.patch
inotify-remove-debug-code.patch
rewrite-rd.patch
rewrite-rd-fix.patch
reiser4.patch
-
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