On 14/10/24 18:44, Boris Burkov wrote: > > > On Mon, Oct 14, 2024 at 06:18:22PM +0100, Mark Harmstone wrote: >> This is a re-do of my previous patchsets: I wasn't happy with how >> synchronous the previous version was in many ways, nor quite how badly >> it butchered the existing ioctl. >> >> This adds an io_uring cmd to btrfs to match the behaviour of the >> existing BTRFS_IOC_ENCODED_READ ioctl, which allows the reading of >> potentially compressed extents directly from the disk. >> >> Pavel mentioned on the previous patches whether we definitely need to >> keep the inode and the extent locked while doing I/O; I think the answer >> is probably yes, a) to prevent races with no-COW extents, and b) to >> prevent the extent from being deallocated from under us. But I think >> it's possible to resolve this, as a future optimization. > > What branch is this based off of? I attempted to apply it to the current > btrfs for-next and > "btrfs: change btrfs_encoded_read_regular_fill_pages to take a callback" > did not apply cleanly. This is against v6.11, because it's the latest stable version. I'm guessing it ought to have been against upstream/master... Mark
