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| author | Balbir Singh <balbir@linux.vnet.ibm.com> | 2008-02-07 00:14:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 08:42:19 -0800 |
| commit | 35c754d79f4da80d5e8972f6403dd26f7962fd88 (patch) | |
| tree | 5e497fd0ac832b5c832044d0267170d7144e1a0e /mm/filemap.c | |
| parent | 044d66c1d2b1c5aa50b4d6d68c21c6c93dd678da (diff) | |
| download | lwn-35c754d79f4da80d5e8972f6403dd26f7962fd88.tar.gz lwn-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 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 63040d5e0ae2..35867ab72640 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -460,14 +460,12 @@ int filemap_write_and_wait_range(struct address_space *mapping, int add_to_page_cache(struct page *page, struct address_space *mapping, pgoff_t offset, gfp_t gfp_mask) { - int error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM); + int error = mem_cgroup_cache_charge(page, current->mm, gfp_mask); + if (error) + goto out; + error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM); if (error == 0) { - - error = mem_cgroup_cache_charge(page, current->mm, gfp_mask); - if (error) - goto out; - write_lock_irq(&mapping->tree_lock); error = radix_tree_insert(&mapping->page_tree, offset, page); if (!error) { @@ -482,7 +480,8 @@ int add_to_page_cache(struct page *page, struct address_space *mapping, write_unlock_irq(&mapping->tree_lock); radix_tree_preload_end(); - } + } else + mem_cgroup_uncharge_page(page); out: return error; } |