Hi Chris,
Here's a pre-preview of my conversion of btrfs to the mount API:
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=btrfs-mount-api
The last patch is the one that does the heavy lifting.
The code compiles and you can load the module. in theory it should work, but
I haven't actually tried mounting anything with it yet. What you *can* do is
use the samples/statx/test-fs-query program to list all the parameters that
the converted btrfs takes via the fsinfo() system call (see attached).
However, I have to disappear off for the moment.
David
---
[root@andromeda ~]# ./test-fs-query btrfs
Filesystem btrfs has 39 parameters
- PARAM[ 0] type=8(string)
- PARAM[ 1] type=1(no-val) -neg-no
- PARAM[ 2] type=8(string) -dep
- PARAM[ 3] type=1(no-val) -neg-no
- PARAM[ 4] type=1(no-val)
- PARAM[ 5] type=1(no-val)
- PARAM[ 6] type=3(u32)
- PARAM[ 7] type=1(no-val)
- PARAM[ 8] type=3(u32)
- PARAM[ 9] type=7(enum) -opt
- PARAM[ 10] type=7(enum) -opt
- PARAM[ 11] type=1(no-val) -neg-no
- PARAM[ 12] type=1(no-val) -neg-no
- PARAM[ 13] type=1(no-val) -neg-no
- PARAM[ 14] type=1(no-val)
- PARAM[ 15] type=8(string)
- PARAM[ 16] type=1(no-val) -neg-no
- PARAM[ 17] type=1(no-val) -neg-no
- PARAM[ 18] type=7(enum)
- PARAM[ 19] type=1(no-val) -neg-no
- PARAM[ 20] type=7(enum)
- PARAM[ 21] type=1(no-val) -neg-no
- PARAM[ 22] type=8(string)
- PARAM[ 23] type=1(no-val)
- PARAM[ 24] type=3(u32)
- PARAM[ 25] type=1(no-val) -neg-no
- PARAM[ 26] type=1(no-val)
- PARAM[ 27] type=1(no-val)
- PARAM[ 28] type=1(no-val)
- PARAM[ 29] type=7(enum) -opt -neg-no
- PARAM[ 30] type=1(no-val) -neg-no
- PARAM[ 31] type=1(no-val) -neg-no
- PARAM[ 32] type=8(string) -opt
- PARAM[ 33] type=13(u64)
- PARAM[ 34] type=6(s32) -dep
- PARAM[ 35] type=3(u32)
- PARAM[ 36] type=1(no-val) -neg-no
- PARAM[ 37] type=1(no-val)
- PARAM[ 38] type=1(no-val)
Filesystem has 39 parameter names
- NAME[ 0] acl -> 1
- NAME[ 1] alloc_start -> 2
- NAME[ 2] autodefrag -> 13
- NAME[ 3] barrier -> 3
- NAME[ 4] check_int -> 4
- NAME[ 5] check_int_data -> 5
- NAME[ 6] check_int_print_mask -> 6
- NAME[ 7] clear_cache -> 7
- NAME[ 8] commit -> 8
- NAME[ 9] compress -> 10
- NAME[ 10] compress-force -> 9
- NAME[ 11] datacow -> 11
- NAME[ 12] datasum -> 12
- NAME[ 13] degraded -> 14
- NAME[ 14] device -> 15
- NAME[ 15] discard -> 16
- NAME[ 16] enospc_debug -> 17
- NAME[ 17] fatal_errors -> 18
- NAME[ 18] flushoncommit -> 19
- NAME[ 19] fragment -> 20
- NAME[ 20] inode_cache -> 21
- NAME[ 21] max_inline -> 22
- NAME[ 22] metadata_ratio -> 24
- NAME[ 23] nologreplay -> 23
- NAME[ 24] recovery -> 25
- NAME[ 25] ref_verify -> 26
- NAME[ 26] rescan_uuid_tree -> 27
- NAME[ 27] skip_balance -> 28
- NAME[ 28] source -> 0
- NAME[ 29] space_cache -> 29
- NAME[ 30] ssd -> 30
- NAME[ 31] ssd_spread -> 31
- NAME[ 32] subvol -> 32
- NAME[ 33] subvolid -> 33
- NAME[ 34] subvolrootid -> 34
- NAME[ 35] thread_pool -> 35
- NAME[ 36] treelog -> 36
- NAME[ 37] usebackuproot -> 37
- NAME[ 38] user_subvol_rm_allowed -> 38
Filesystem has 33 enumeration values
- ENUM[ 0] 20.all
- ENUM[ 1] 20.data
- ENUM[ 2] 20.metadata
- ENUM[ 3] 10.zlib
- ENUM[ 4] 10.zlib:1
- ENUM[ 5] 10.zlib:2
- ENUM[ 6] 10.zlib:3
- ENUM[ 7] 10.zlib:4
- ENUM[ 8] 10.zlib:5
- ENUM[ 9] 10.zlib:6
- ENUM[ 10] 10.zlib:7
- ENUM[ 11] 10.zlib:8
- ENUM[ 12] 10.zlib:9
- ENUM[ 13] 10.lzo
- ENUM[ 14] 10.zstd
- ENUM[ 15] 10.no
- ENUM[ 16] 9.zlib
- ENUM[ 17] 9.zlib:1
- ENUM[ 18] 9.zlib:2
- ENUM[ 19] 9.zlib:3
- ENUM[ 20] 9.zlib:4
- ENUM[ 21] 9.zlib:5
- ENUM[ 22] 9.zlib:6
- ENUM[ 23] 9.zlib:7
- ENUM[ 24] 9.zlib:8
- ENUM[ 25] 9.zlib:9
- ENUM[ 26] 9.lzo
- ENUM[ 27] 9.zstd
- ENUM[ 28] 9.no
- ENUM[ 29] 29.v1
- ENUM[ 30] 29.v2
- ENUM[ 31] 18.bug
- ENUM[ 32] 18.panic
