Linux Kernel https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v6.7.9 2023-09-25T12:30:28Z 2023-09-25T12:30:28Z David Howells dhowells@redhat.com 2023-09-25T12:03:04Z urn:sha1:f1982740f5e77090bde41a9b84e257d69ec46598 Convert the iov_iter iteration macros to inline functions to make the code easier to follow. The functions are marked __always_inline as we don't want to end up with indirect calls in the code. This, however, leaves dealing with ->copy_mc in an awkard situation since the step function (memcpy_from_iter_mc()) needs to test the flag in the iterator, but isn't passed the iterator. This will be dealt with in a follow-up patch. The variable names in the per-type iterator functions have been harmonised as much as possible and made clearer as to the variable purpose. The iterator functions are also moved to a header file so that other operations that need to scan over an iterator can be added. For instance, the rbd driver could use this to scan a buffer to see if it is all zeros and libceph could use this to generate a crc. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/3710261.1691764329@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/855.1692047347@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/20230816120741.534415-1-dhowells@redhat.com/ # v3 Link: https://lore.kernel.org/r/20230925120309.1731676-8-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Signed-off-by: Christian Brauner <brauner@kernel.org>