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| author | Hugh Dickins <hugh.dickins@tiscali.co.uk> | 2009-09-12 12:21:27 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:45:31 -0700 |
| commit | 2195d2818c37bdf263865f1e9effccdd9fc5f9d4 (patch) | |
| tree | 3b74a195c2b69d8390c67c7cd46139df0bdd69ec /ipc/shm.c | |
| parent | 69def9f05dfce3281bb06599057e6b8097385d39 (diff) | |
| download | lwn-2195d2818c37bdf263865f1e9effccdd9fc5f9d4.tar.gz lwn-2195d2818c37bdf263865f1e9effccdd9fc5f9d4.zip | |
fix undefined reference to user_shm_unlock
My 353d5c30c666580347515da609dd74a2b8e9b828 "mm: fix hugetlb bug due to
user_shm_unlock call" broke the CONFIG_SYSVIPC !CONFIG_MMU build of both
2.6.31 and 2.6.30.6: "undefined reference to `user_shm_unlock'".
gcc didn't understand my comment! so couldn't figure out to optimize
away user_shm_unlock() from the error path in the hugetlb-less case, as
it does elsewhere. Help it to do so, in a language it understands.
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/shm.c')
| -rw-r--r-- | ipc/shm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 1bc4701ef4f0..30162a59621a 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -410,7 +410,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) return error; no_id: - if (shp->mlock_user) /* shmflg & SHM_HUGETLB case */ + if (is_file_hugepages(file) && shp->mlock_user) user_shm_unlock(size, shp->mlock_user); fput(file); no_file: |