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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 /include/linux | |
| parent | 21a3c273f88c9cbbaf7e14505df0131d95c8f262 (diff) | |
| download | linux-3.10-40716e29243de46720e5773797791466c28904ec.tar.gz linux-3.10-40716e29243de46720e5773797791466c28904ec.tar.bz2 linux-3.10-40716e29243de46720e5773797791466c28904ec.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 'include/linux')
| -rw-r--r-- | include/linux/hugetlb.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index cf0181738c9..000837e126e 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -152,7 +152,8 @@ static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb) extern const struct file_operations hugetlbfs_file_operations; extern const struct vm_operations_struct hugetlb_vm_ops; -struct file *hugetlb_file_setup(const char *name, size_t size, vm_flags_t acct, +struct file *hugetlb_file_setup(const char *name, unsigned long addr, + size_t size, vm_flags_t acct, struct user_struct **user, int creat_flags); static inline int is_file_hugepages(struct file *file) @@ -168,7 +169,8 @@ static inline int is_file_hugepages(struct file *file) #else /* !CONFIG_HUGETLBFS */ #define is_file_hugepages(file) 0 -static inline struct file *hugetlb_file_setup(const char *name, size_t size, +static inline struct file * +hugetlb_file_setup(const char *name, unsigned long addr, size_t size, vm_flags_t acctflag, struct user_struct **user, int creat_flags) { return ERR_PTR(-ENOSYS); |