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| author | Dima Zavin <dima@android.com> | 2010-10-26 14:21:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-26 16:52:08 -0700 |
| commit | ea05c8444e451f1cfbf78c68733e717ad7b8602b (patch) | |
| tree | e1ebb0406f156e406b3bef5998084b688794923e /drivers | |
| parent | d65bfacb046f3df8aa11a9cb9b6e448f6171174d (diff) | |
| download | linux-ea05c8444e451f1cfbf78c68733e717ad7b8602b.tar.gz linux-ea05c8444e451f1cfbf78c68733e717ad7b8602b.tar.bz2 linux-ea05c8444e451f1cfbf78c68733e717ad7b8602b.zip | |
mm: add a might_sleep_if() to dma_pool_alloc()
Buggy drivers (e.g. fsl_udc) could call dma_pool_alloc from atomic
context with GFP_KERNEL. In most instances, the first pool_alloc_page
call would succeed and the sleeping functions would never be called. This
allowed the buggy drivers to slip through the cracks.
Add a might_sleep_if() checking for __GFP_WAIT in flags.
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions