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| author | Steven Truelove <steven.truelove@utoronto.ca> | 2012-03-21 16:34:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-21 17:54:59 -0700 |
| commit | 40716e29243de46720e5773797791466c28904ec (patch) | |
| tree | 19616ad05cbead73d0643b002a7ced8baa292ee2 /ipc | |
| parent | 21a3c273f88c9cbbaf7e14505df0131d95c8f262 (diff) | |
| download | lwn-40716e29243de46720e5773797791466c28904ec.tar.gz lwn-40716e29243de46720e5773797791466c28904ec.zip | |
hugetlbfs: fix alignment of huge page requests
When calling shmget() with SHM_HUGETLB, shmget aligns the request size to
PAGE_SIZE, but this is not sufficient.
Modify hugetlb_file_setup() to align requests to the huge page size, and
to accept an address argument so that all alignment checks can be
performed in hugetlb_file_setup(), rather than in its callers. Change
newseg() and mmap_pgoff() to match the new prototype and eliminate a now
redundant alignment check.
[akpm@linux-foundation.org: fix build]
Signed-off-by: Steven Truelove <steven.truelove@utoronto.ca>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
| -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 b76be5bda6c2..406c5b208193 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -482,7 +482,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) /* hugetlb_file_setup applies strict accounting */ if (shmflg & SHM_NORESERVE) acctflag = VM_NORESERVE; - file = hugetlb_file_setup(name, size, acctflag, + file = hugetlb_file_setup(name, 0, size, acctflag, &shp->mlock_user, HUGETLB_SHMFS_INODE); } else { /* |