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| author | Al Viro <viro@zeniv.linux.org.uk> | 2021-04-28 20:59:08 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2021-06-10 11:45:15 -0400 |
| commit | f5da83545f4ed2c1a1648b7d760a6fc358798e52 (patch) | |
| tree | 9a2f903521c3810a7f3a159e3d3e534ba60f45c3 /lib/iov_iter.c | |
| parent | 594e450b3f4435a9d663df3d48d7fa34e685cbd1 (diff) | |
| download | linux-f5da83545f4ed2c1a1648b7d760a6fc358798e52.tar.bz2 | |
iterate_and_advance(): get rid of magic in case when n is 0
iov_iter_advance() needs to do some non-trivial work when it's given
0 as argument (skip all empty iovecs, mostly). We used to implement
it via iterate_and_advance(); we no longer do so and for all other
users of iterate_and_advance() zero length is a no-op.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib/iov_iter.c')
| -rw-r--r-- | lib/iov_iter.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 93ae0c2c8d66..763114a754c5 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -117,7 +117,7 @@ #define iterate_and_advance(i, n, v, I, B, K, X) { \ if (unlikely(i->count < n)) \ n = i->count; \ - if (i->count) { \ + if (likely(n)) { \ size_t skip = i->iov_offset; \ if (likely(iter_is_iovec(i))) { \ const struct iovec *iov; \ |