Function report |
Source Code:lib\iov_iter.c |
Create Date:2022-07-28 06:23:32 |
Last Modify:2022-05-21 11:43:54 | Copyright©Brick |
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Name:csum_and_copy_from_iter
Proto:size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i)
Type:size_t
Parameter:
Type | Parameter | Name |
---|---|---|
void * | addr | |
size_t | bytes | |
__wsum * | csum | |
struct iov_iter * | i |
1443 | off = 0 |
1446 | WARN_ON(1) |
1447 | Return 0 |
1449 | iterate_and_advance(i, bytes, v, ({interr = 0;next = csum_and_copy_from_user(iov_base, (to += iov_len) - iov_len, iov_len, 0, & err);If Not err Then {sum = csum_block_add(sum, next, off);off += iov_len;}err ? iov_len : 0;}), ({char * p = kmap_atomic(bv_page);sum = csum_and_memcpy((to += bv_len) - bv_len, p + bv_offset, bv_len, sum, off);Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(p);off += bv_len;}), ({sum = csum_and_memcpy((to += iov_len) - iov_len, iov_base, iov_len, sum, off);off += iov_len;})) |
1474 | Return bytes |
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