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/openbmc/linux/arch/s390/include/uapi/asm/ |
H A D | statfs.h | 6d9406f8 Thu May 04 09:40:21 CDT 2023 Ilya Leoshkevich <iii@linux.ibm.com> s390/uapi: cover statfs padding by growing f_spare
pahole says:
struct compat_statfs64 { ... u32 f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
struct statfs { ... unsigned int f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
struct statfs64 { ... unsigned int f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
One has to keep the existence of padding in mind when working with these structs. Grow f_spare arrays to 5 in order to simplify things.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Link: https://lore.kernel.org/r/20230504144021.808932-3-iii@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
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/openbmc/linux/arch/s390/include/asm/ |
H A D | compat.h | 6d9406f8 Thu May 04 09:40:21 CDT 2023 Ilya Leoshkevich <iii@linux.ibm.com> s390/uapi: cover statfs padding by growing f_spare
pahole says:
struct compat_statfs64 { ... u32 f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
struct statfs { ... unsigned int f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
struct statfs64 { ... unsigned int f_spare[4]; /* 68 16 */ /* size: 88, cachelines: 1, members: 12 */ /* padding: 4 */
One has to keep the existence of padding in mind when working with these structs. Grow f_spare arrays to 5 in order to simplify things.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Link: https://lore.kernel.org/r/20230504144021.808932-3-iii@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
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