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| author | Balbir Singh <balbir@linux.vnet.ibm.com> | 2008-02-07 09:14:05 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 17:42:19 +0100 |
| commit | 35c754d79f4da80d5e8972f6403dd26f7962fd88 (patch) | |
| tree | 5e497fd0ac832b5c832044d0267170d7144e1a0e /mm/swap_state.c | |
| parent | memcgroup: reinstate swapoff mod (diff) | |
| download | linux-35c754d79f4da80d5e8972f6403dd26f7962fd88.tar.xz linux-35c754d79f4da80d5e8972f6403dd26f7962fd88.zip | |
memory controller BUG_ON()
Move mem_controller_cache_charge() above radix_tree_preload().
radix_tree_preload() disables preemption, even though the gfp_mask passed
contains __GFP_WAIT, we cannot really do __GFP_WAIT allocations, thus we
hit a BUG_ON() in kmem_cache_alloc().
This patch moves mem_controller_cache_charge() to above radix_tree_preload()
for cache charging.
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/swap_state.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c index 581b609e748d..6ce0669acedc 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -75,13 +75,13 @@ int add_to_swap_cache(struct page *page, swp_entry_t entry, gfp_t gfp_mask) BUG_ON(!PageLocked(page)); BUG_ON(PageSwapCache(page)); BUG_ON(PagePrivate(page)); - error = radix_tree_preload(gfp_mask); - if (!error) { - error = mem_cgroup_cache_charge(page, current->mm, gfp_mask); - if (error) - goto out; + error = mem_cgroup_cache_charge(page, current->mm, gfp_mask); + if (error) + goto out; + error = radix_tree_preload(gfp_mask); + if (!error) { write_lock_irq(&swapper_space.tree_lock); error = radix_tree_insert(&swapper_space.page_tree, entry.val, page); @@ -97,7 +97,8 @@ int add_to_swap_cache(struct page *page, swp_entry_t entry, gfp_t gfp_mask) } write_unlock_irq(&swapper_space.tree_lock); radix_tree_preload_end(); - } + } else + mem_cgroup_uncharge_page(page); out: return error; } |