diff options
| author | Jan Kara <jack@suse.cz> | 2012-07-31 19:41:37 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-31 21:42:39 -0400 |
| commit | aa91c4d898c062804f4d0a5da6d8ab013cd0e868 (patch) | |
| tree | b4472de48394ca8aafac72e2e97eb9a259fd8111 /block/noop-iosched.c | |
| parent | 92ca922f0a19145f2dcc99d84fe656fa55b52c2e (diff) | |
mm: make vb_alloc() more foolproof
If someone calls vb_alloc() (or vm_map_ram() for that matter) to allocate
0 bytes (0 pages), get_order() returns BITS_PER_LONG - PAGE_CACHE_SHIFT
and interesting stuff happens. So make debugging such problems easier and
warn about 0-size allocation.
[akpm@linux-foundation.org: use WARN_ON-return-value feature]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block/noop-iosched.c')
0 files changed, 0 insertions, 0 deletions