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mm, slub: don't call flush_all() from slab_debug_trace_open()

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slab_debug_trace_open() can only be called on caches with SLAB_STORE_USER flag
and as with all slub debugging flags, such caches avoid cpu or percpu partial
slabs altogether, so there's nothing to flush.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Christoph Lameter <cl@linux.com>
This commit is contained in:
Vlastimil Babka 2021-05-28 14:32:10 +02:00
parent 7d2a07b769
commit eafb1d6403
1 changed files with 0 additions and 3 deletions
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mm/slub.c
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@ -5825,9 +5825,6 @@ static int slab_debug_trace_open(struct inode *inode, struct file *filep)
if (!alloc_loc_track(t, PAGE_SIZE / sizeof(struct location), GFP_KERNEL))
return -ENOMEM;
/* Push back cpu slabs */
flush_all(s);
for_each_kmem_cache_node(s, node, n) {
unsigned long flags;
struct page *page;