diff options
author | Rodrigo Vivi <[email protected]> | 2018-07-23 09:13:12 -0700 |
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committer | Rodrigo Vivi <[email protected]> | 2018-07-23 09:13:12 -0700 |
commit | c74a7469f97c0f40b46e82ee979f9fb1bb6e847c (patch) | |
tree | f2690a1a916b73ef94657fbf0e0141ae57701825 /include/linux/uio.h | |
parent | 6f15a7de86c8cf2dc09fc9e6d07047efa40ef809 (diff) | |
parent | 500775074f88d9cf5416bed2ca19592812d62c41 (diff) |
Merge drm/drm-next into drm-intel-next-queued
We need a backmerge to get DP_DPCD_REV_14 before we push other
i915 changes to dinq that could break compilation.
Signed-off-by: Rodrigo Vivi <[email protected]>
Diffstat (limited to 'include/linux/uio.h')
-rw-r--r-- | include/linux/uio.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index e67e12adb136..409c845d4cd3 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -154,6 +154,12 @@ size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i); #define _copy_from_iter_flushcache _copy_from_iter_nocache #endif +#ifdef CONFIG_ARCH_HAS_UACCESS_MCSAFE +size_t _copy_to_iter_mcsafe(const void *addr, size_t bytes, struct iov_iter *i); +#else +#define _copy_to_iter_mcsafe _copy_to_iter +#endif + static __always_inline __must_check size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i) { @@ -163,6 +169,15 @@ size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i) return _copy_from_iter_flushcache(addr, bytes, i); } +static __always_inline __must_check +size_t copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i) +{ + if (unlikely(!check_copy_size(addr, bytes, false))) + return 0; + else + return _copy_to_iter_mcsafe(addr, bytes, i); +} + size_t iov_iter_zero(size_t bytes, struct iov_iter *); unsigned long iov_iter_alignment(const struct iov_iter *i); unsigned long iov_iter_gap_alignment(const struct iov_iter *i); |