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| author | Wei Yang <richard.weiyang@gmail.com> | 2018-12-28 00:33:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 12:11:46 -0800 |
| commit | 88349a2837fbaef83862a011e1f53c4551d3e199 (patch) | |
| tree | ca3794d49f7c84ca93d9abff6986a7d7fb2ffd88 /mm/slub.c | |
| parent | 6159d0f5c03e81daed29657e60383ee27f979b4a (diff) | |
| download | linux-stable-88349a2837fbaef83862a011e1f53c4551d3e199.tar.gz linux-stable-88349a2837fbaef83862a011e1f53c4551d3e199.tar.bz2 linux-stable-88349a2837fbaef83862a011e1f53c4551d3e199.zip | |
mm/slub.c: record final state of slub action in deactivate_slab()
If __cmpxchg_double_slab() fails and (l != m), current code records
transition states of slub action.
Update the action after __cmpxchg_double_slab() success to record the
final state.
[akpm@linux-foundation.org: more whitespace cleanup]
Link: http://lkml.kernel.org/r/20181107013119.3816-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/mm/slub.c b/mm/slub.c index 011e53e5845b..36c0befeebd8 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2131,26 +2131,15 @@ redo: } if (l != m) { - if (l == M_PARTIAL) - remove_partial(n, page); - else if (l == M_FULL) - remove_full(s, n, page); - if (m == M_PARTIAL) { - + if (m == M_PARTIAL) add_partial(n, page, tail); - stat(s, tail); - - } else if (m == M_FULL) { - - stat(s, DEACTIVATE_FULL); + else if (m == M_FULL) add_full(s, n, page); - - } } l = m; @@ -2163,7 +2152,11 @@ redo: if (lock) spin_unlock(&n->list_lock); - if (m == M_FREE) { + if (m == M_PARTIAL) + stat(s, tail); + else if (m == M_FULL) + stat(s, DEACTIVATE_FULL); + else if (m == M_FREE) { stat(s, DEACTIVATE_EMPTY); discard_slab(s, page); stat(s, FREE_SLAB); |