The patch titled
reiser4: re-add page_count check to reiser4_releasepage
has been removed from the -mm tree. Its filename was
reiser4-re-add-page_count-check-to-reiser4_releasepage.patch
This patch was dropped because it was folded into reiser4.patch
------------------------------------------------------
Subject: reiser4: re-add page_count check to reiser4_releasepage
From: Alexaner Zarochentsev <zam@xxxxxxxxxxx>
re-add to reiser4_releasepage mistakenly removed page_count check. reiser4
uses extra page reference to protect page from detaching from the jnode.
Signed-off-by: Alexander Zarochentsev <zam@xxxxxxxxxxx>
Cc: Hans Reiser <reiser@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/reiser4/as_ops.c | 5 +++++
1 files changed, 5 insertions(+)
diff -puN fs/reiser4/as_ops.c~reiser4-re-add-page_count-check-to-reiser4_releasepage fs/reiser4/as_ops.c
--- a/fs/reiser4/as_ops.c~reiser4-re-add-page_count-check-to-reiser4_releasepage
+++ a/fs/reiser4/as_ops.c
@@ -292,6 +292,11 @@ int reiser4_releasepage(struct page *pag
if (PageDirty(page))
return 0;
+ /* extra page reference is used by reiser4 to protect
+ * jnode<->page link from this ->releasepage(). */
+ if (page_count(page) > 3)
+ return 0;
+
/* releasable() needs jnode lock, because it looks at the jnode fields
* and we need jload_lock here to avoid races with jload(). */
spin_lock_jnode(node);
_
Patches currently in -mm which might be from zam@xxxxxxxxxxx are
reiser4.patch
reiser4-re-add-page_count-check-to-reiser4_releasepage.patch
reiser4-restore-fibmap-ioctl-support-for-packed-files.patch
reiser4-format-subversion-numbers-heir-set-and-file-conversion-fix-readpages-cryptcompress.patch
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