Hello, These patches convert us to use the new mount API. Christian tried to do this a few months ago, but ran afoul of our preference to have a bunch of small changes. I started this series before I knew he had tried to convert us, so there's a fair bit that's different, but I did copy his approach for the remount bit. I've linked to the original patch where I took inspiration, Christian let me know if you want some other annotation for credit, I wasn't really sure the best way to do that. There are a few preparatory patches in the beginning, and then cleanups at the end. I took each call back one at a time to try and make it as small as possible. The resulting code is less, but the diffstat shows more insertions that deletions. This is because there are some big comment blocks around some of the more subtle things that we're doing to hopefully make it more clear. This is currently running through our CI. I thought it was fine last week but we had a bunch of new failures when I finished up the remount behavior. However today I discovered this was a regression in btrfs-progs, and I'm re-running the tests with the fixes. If anything major breaks in the CI I'll resend with fixes, but I'm pretty sure these patches will pass without issue. I utilized __maybe_unused liberally to make sure everything compiled while applied. The only "big" patch is where I went and removed the old API. If requested I can break that up a bit more, but I didn't think it was necessary. I did make sure to keep it in its own patch, so the switch to the new mount API path only has things we need to support the new mount API, and then the next patch removes the old code. Thanks, Josef Christian Brauner (1): fs: indicate request originates from old mount api Josef Bacik (17): btrfs: split out the mount option validation code into its own helper btrfs: set default compress type at btrfs_init_fs_info time btrfs: move space cache settings into open_ctree btrfs: do not allow free space tree rebuild on extent tree v2 btrfs: split out ro->rw and rw->ro helpers into their own functions btrfs: add a NOSPACECACHE mount option flag btrfs: add fs_parameter definitions btrfs: add parse_param callback for the new mount api btrfs: add fs context handling functions btrfs: add reconfigure callback for fs_context btrfs: add get_tree callback for new mount API btrfs: handle the ro->rw transition for mounting different subovls btrfs: switch to the new mount API btrfs: move the device specific mount options to super.c btrfs: remove old mount API code btrfs: move one shot mount option clearing to super.c btrfs: set clear_cache if we use usebackuproot fs/btrfs/disk-io.c | 76 +- fs/btrfs/disk-io.h | 1 - fs/btrfs/free-space-cache.h | 1 + fs/btrfs/fs.h | 15 +- fs/btrfs/super.c | 2421 ++++++++++++++++++----------------- fs/btrfs/super.h | 5 +- fs/btrfs/zoned.c | 16 +- fs/btrfs/zoned.h | 3 +- fs/namespace.c | 11 + 9 files changed, 1316 insertions(+), 1233 deletions(-) -- 2.41.0
