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| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-06-11 04:04:33 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2022-08-08 22:37:25 -0400 |
| commit | 310d9d5a5009a93377200b98daa2d84aa2bd8160 (patch) | |
| tree | f432bc8151ff874d2654b0f0b816f44c02a71f05 /lib | |
| parent | 746de1f86fcd33464acac047f111eea877f2f7a0 (diff) | |
| download | lwn-310d9d5a5009a93377200b98daa2d84aa2bd8160.tar.gz lwn-310d9d5a5009a93377200b98daa2d84aa2bd8160.zip | |
expand those iov_iter_advance()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/iov_iter.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 415d51bbc727..46ec07886d7b 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1378,7 +1378,8 @@ static ssize_t iter_xarray_get_pages(struct iov_iter *i, return 0; maxsize = min_t(size_t, nr * PAGE_SIZE - offset, maxsize); - iov_iter_advance(i, maxsize); + i->iov_offset += maxsize; + i->count -= maxsize; return maxsize; } @@ -1467,7 +1468,13 @@ static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i, for (int k = 0; k < n; k++) get_page(p[k] = page + k); maxsize = min_t(size_t, maxsize, n * PAGE_SIZE - *start); - iov_iter_advance(i, maxsize); + i->count -= maxsize; + i->iov_offset += maxsize; + if (i->iov_offset == i->bvec->bv_len) { + i->iov_offset = 0; + i->bvec++; + i->nr_segs--; + } return maxsize; } if (iov_iter_is_pipe(i)) |