The patch titled
fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix
has been removed from the -mm tree. Its filename was
fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix.patch
This patch was dropped because it was folded into fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode.patch
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
add some commentary
Cc: <stable@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/inode.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff -puN fs/inode.c~fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix fs/inode.c
--- a/fs/inode.c~fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix
+++ a/fs/inode.c
@@ -697,12 +697,13 @@ void unlock_new_inode(struct inode *inod
}
#endif
/*
- * This is special! We do not need the spinlock
- * when clearing I_LOCK, because we're guaranteed
- * that nobody else tries to do anything about the
- * state of the inode when it is locked, as we
- * just created it (so there can be no old holders
- * that haven't tested I_LOCK).
+ * This is special! We do not need the spinlock when clearing I_LOCK,
+ * because we're guaranteed that nobody else tries to do anything about
+ * the state of the inode when it is locked, as we just created it (so
+ * there can be no old holders that haven't tested I_LOCK).
+ * However we must emit the memory barrier so that other CPUs reliably
+ * see the clearing of I_LOCK after the other inode initialisation has
+ * completed.
*/
smp_mb();
WARN_ON((inode->i_state & (I_LOCK|I_NEW)) != (I_LOCK|I_NEW));
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode.patch
fs-make-sure-data-stored-into-inode-is-properly-seen-before-unlocking-new-inode-fix.patch
drivers-mfd-ab3100-corec-fiw-warning-and-powerpc-build-error.patch
mm-make-swap-token-dummies-static-inlines.patch
memory-hotplug-update-zone-pcp-at-memory-online.patch
revert-hugetlb-restore-interleaving-of-bootmem-huge-pages-2631.patch
vmscan-dont-attempt-to-reclaim-anon-page-in-lumpy-reclaim-when-no-swap-space-is-avilable.patch
revert-proc-kcore-work-around-a-bug.patch
arches-drop-superfluous-casts-in-nr_free_pages-callers.patch
tracing-page-allocator-add-trace-event-for-page-traffic-related-to-the-buddy-lists.patch
page-allocator-maintain-rolling-count-of-pages-to-free-from-the-pcp.patch
hugetlb-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch
alpha-convert-to-use-arch_gettimeoffset.patch
cpuidle-fix-the-menu-governor-to-boost-io-performance.patch
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