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| author | Toshi Kani <toshi.kani@hpe.com> | 2016-09-23 20:21:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-24 11:20:01 -0700 |
| commit | 3089bf614c7e2fd441ee001e3ff3d18326f6f091 (patch) | |
| tree | b16cd2c7b0213c55dfe2d8b867e54745b403a861 | |
| parent | 3be7988674ab33565700a37b210f502563d932e6 (diff) | |
| download | linux-3089bf614c7e2fd441ee001e3ff3d18326f6f091.tar.bz2 | |
shmem: fix tmpfs to handle the huge= option properly
shmem_get_unmapped_area() checks SHMEM_SB(sb)->huge incorrectly, which
leads to a reversed effect of "huge=" mount option.
Fix the check in shmem_get_unmapped_area().
Note, the default value of SHMEM_SB(sb)->huge remains as
SHMEM_HUGE_NEVER. User will need to specify "huge=" option to enable
huge page mappings.
Reported-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/shmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index fd8b2b5741b1..aec5b492d947 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1980,7 +1980,7 @@ unsigned long shmem_get_unmapped_area(struct file *file, return addr; sb = shm_mnt->mnt_sb; } - if (SHMEM_SB(sb)->huge != SHMEM_HUGE_NEVER) + if (SHMEM_SB(sb)->huge == SHMEM_HUGE_NEVER) return addr; } |