The patch titled
mm: document tree_lock->zone.lock lockorder
has been added to the -mm tree. Its filename is
mm-document-tree_lock-zonelock-lockorder.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: document tree_lock->zone.lock lockorder
From: Nick Piggin <npiggin@xxxxxxx>
zone->lock is quite an "inner" lock and mostly constrained to page alloc as
well, so like slab locks, it probably isn't something that is critically
important to document here. However unlike slab locks, zone lock could be
used more widely in future, and page_alloc.c might possibly have more
business to do tricky things with pagecache than does slab. So... I don't
think it hurts to document it.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN mm/filemap.c~mm-document-tree_lock-zonelock-lockorder mm/filemap.c
--- a/mm/filemap.c~mm-document-tree_lock-zonelock-lockorder
+++ a/mm/filemap.c
@@ -63,6 +63,7 @@ generic_file_direct_IO(int rw, struct ki
* ->private_lock (__free_pte->__set_page_dirty_buffers)
* ->swap_lock (exclusive_swap_page, others)
* ->mapping->tree_lock
+ * ->zone.lock
*
* ->i_mutex
* ->i_mmap_lock (truncate->unmap_mapping_range)
diff -puN mm/rmap.c~mm-document-tree_lock-zonelock-lockorder mm/rmap.c
--- a/mm/rmap.c~mm-document-tree_lock-zonelock-lockorder
+++ a/mm/rmap.c
@@ -36,6 +36,7 @@
* mapping->tree_lock (widely used, in set_page_dirty,
* in arch-dependent flush_dcache_mmap_lock,
* within inode_lock in __sync_single_inode)
+ * zone->lock (within radix tree node alloc)
*/
#include <linux/mm.h>
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
remove-zero_page.patch
mm-use-lockless-radix-tree-probe.patch
mm-improve-find_lock_page.patch
mm-clarify-__add_to_swap_cache-locking.patch
radix-tree-use-indirect-bit.patch
calculation-of-pgoff-in-do_linear_fault-uses-mixed.patch
fs-fix-nobh-error-handling.patch
fix-the-max-path-calculation-in-radix-treec-update.patch
mm-revert-kernel_ds-buffered-write-optimisation.patch
revert-81b0c8713385ce1b1b9058e916edcf9561ad76d6.patch
revert-6527c2bdf1f833cc18e8f42bd97973d583e4aa83.patch
mm-clean-up-buffered-write-code.patch
mm-debug-write-deadlocks.patch
mm-trim-more-holes.patch
mm-buffered-write-cleanup.patch
mm-write-iovec-cleanup.patch
mm-fix-pagecache-write-deadlocks.patch
mm-buffered-write-iterator.patch
fs-fix-data-loss-on-error.patch
fs-introduce-write_begin-write_end-and-perform_write-aops.patch
introduce-write_begin-write_end-aops-important-fix.patch
introduce-write_begin-write_end-aops-fix2.patch
mm-restore-kernel_ds-optimisations.patch
implement-simple-fs-aops.patch
implement-simple-fs-aops-fix.patch
block_dev-convert-to-new-aops.patch
ext2-convert-to-new-aops.patch
ext2-convert-to-new-aops-fix.patch
ext2-convert-to-new-aops-fix2.patch
ext3-convert-to-new-aops.patch
ext3-convert-to-new-aops-fix.patch
ext3-convert-to-new-aops-fix-fix.patch
ext4-convert-to-new-aops.patch
ext4-convert-to-new-aops-fix.patch
ext4-convert-to-new-aops-fix-fix.patch
xfs-convert-to-new-aops.patch
gfs2-convert-to-new-aops-fix.patch
fs-new-cont-helpers.patch
fat-convert-to-new-aops.patch
hfs-convert-to-new-aops.patch
hfsplus-convert-to-new-aops.patch
hpfs-convert-to-new-aops.patch
bfs-convert-to-new-aops.patch
qnx4-convert-to-new-aops.patch
reiserfs-use-generic-write.patch
reiserfs-convert-to-new-aops.patch
reiserfs-convert-to-new-aops-fix.patch
reiserfs-convert-to-new-aops-fix2.patch
reiserfs-use-generic_cont_expand_simple.patch
with-reiserfs-no-longer-using-the-weird-generic_cont_expand-remove-it-completely.patch
nfs-convert-to-new-aops.patch
smb-convert-to-new-aops.patch
fuse-convert-to-new-aops.patch
hostfs-convert-to-new-aops.patch
hostfs-convert-to-new-aops-fix.patch
hostfs-convert-to-new-aops-fix-fix.patch
jffs2-convert-to-new-aops.patch
ufs-convert-to-new-aops.patch
ufs-convert-to-new-aops-fix.patch
ufs-convert-to-new-aops-fix2.patch
udf-convert-to-new-aops.patch
udf-convert-to-new-aops-fix.patch
sysv-convert-to-new-aops.patch
sysv-convert-to-new-aops-fix.patch
sysv-convert-to-new-aops-fix2.patch
minix-convert-to-new-aops.patch
minix-convert-to-new-aops-fix.patch
minix-convert-to-new-aops-fix2.patch
jfs-convert-to-new-aops.patch
fs-adfs-convert-to-new-aops.patch
fs-affs-convert-to-new-aops.patch
affs-convert-to-new-aops-fix.patch
affs-convert-to-new-aops-fix-fix.patch
ocfs2-convert-to-new-aops.patch
fs-remove-some-aop_truncated_page.patch
make-swappiness-safer-to-use.patch
mm-document-tree_lock-zonelock-lockorder.patch
fs-reiserfs-cleanups.patch
atomic_opstxt-has-incorrect-misleading-and-insufficient-information.patch
fs-introduce-write_begin-write_end-and-perform_write-aops-revoke.patch
fs-introduce-write_begin-write_end-and-perform_write-aops-revoke-fix.patch
bitops-introduce-lock-ops.patch
alpha-fix-bitops.patch
alpha-lock-bitops.patch
alpha-lock-bitops-fix.patch
ia64-lock-bitops.patch
mips-fix-bitops.patch
mips-lock-bitops.patch
powerpc-lock-bitops.patch
powerpc-lock-bitops-fix.patch
bit_spin_lock-use-lock-bitops.patch
reiser4-fix-for-new-aops-patches.patch
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