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author | David S. Miller <davem@davemloft.net> | 2016-02-23 00:09:14 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2016-02-23 00:09:14 -0500 |
commit | b633353115e352d3c31c12d4c61978c810f05ea1 (patch) | |
tree | 055174a1b31a3e10fd2c505788fe6487b0028d00 /mm/internal.h | |
parent | b1d95ae5c5bd3deba84d00c4f83d7d0836b5936f (diff) | |
parent | dea08e604408d0303e2332896c5fdd8c1f7d79a2 (diff) | |
download | linux-b633353115e352d3c31c12d4c61978c810f05ea1.tar.gz linux-b633353115e352d3c31c12d4c61978c810f05ea1.tar.bz2 linux-b633353115e352d3c31c12d4c61978c810f05ea1.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/phy/bcm7xxx.c
drivers/net/phy/marvell.c
drivers/net/vxlan.c
All three conflicts were cases of simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/internal.h')
-rw-r--r-- | mm/internal.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index ed8b5ffcf9b1..a38a21ebddb4 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -216,6 +216,37 @@ static inline bool is_cow_mapping(vm_flags_t flags) return (flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE; } +/* + * These three helpers classifies VMAs for virtual memory accounting. + */ + +/* + * Executable code area - executable, not writable, not stack + */ +static inline bool is_exec_mapping(vm_flags_t flags) +{ + return (flags & (VM_EXEC | VM_WRITE | VM_STACK)) == VM_EXEC; +} + +/* + * Stack area - atomatically grows in one direction + * + * VM_GROWSUP / VM_GROWSDOWN VMAs are always private anonymous: + * do_mmap() forbids all other combinations. + */ +static inline bool is_stack_mapping(vm_flags_t flags) +{ + return (flags & VM_STACK) == VM_STACK; +} + +/* + * Data area - private, writable, not stack + */ +static inline bool is_data_mapping(vm_flags_t flags) +{ + return (flags & (VM_WRITE | VM_SHARED | VM_STACK)) == VM_WRITE; +} + /* mm/util.c */ void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma, struct vm_area_struct *prev, struct rb_node *rb_parent); |