Am Donnerstag, 21. März 2019, 12:50:24 CET schrieb David Howells: > > Hi Al, > > Here's a set of patches that convert romfs, cramfs, jffs2 and squashfs to > use the new fs_context struct and replace mount_mtd(). They have > prerequisite commits (such as replacing mount_bdev()) that can be found in > the branch detailed below. > > (1) Provide a replacement for mount_mtd() that takes an fs_context to > specify the parameters. > > I also put an mtd device pointer into the fs_context struct for use in > the sget_fc() test and set functions plus a destructor because > put_fs_context() can't reach into the mtd module. > > (2) Convert romfs. > > (3) Convert cramfs. > > (4) Convert jffs2. > > (5) Get rid of the now-obsolete mount_mtd() function. > > (6) Convert squashfs. > > These can be found in the following branch: > > http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=mount-api-viro Hmm, I pulled this into 5.1-rc1 to test jffs2 but it oopes already while booting: [ 5.999847] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068 [ 6.002273] #PF error: [normal kernel read fault] [ 6.002912] PGD 0 P4D 0 [ 6.003241] Oops: 0000 [#1] SMP PTI [ 6.003690] CPU: 3 PID: 1221 Comm: mount Not tainted 5.1.0-rc1+ #372 [ 6.004494] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 [ 6.004504] RIP: 0010:reconfigure_super+0x17/0x1e0 [ 6.004505] Code: 00 01 75 83 48 89 df e8 c7 e5 ff ff e9 76 ff ff ff 66 90 41 56 41 55 41 54 55 53 f7 47 68 ae ff 7f fd 48 8b 47 28 44 8b 77 64 <48> 8b 68 68 0f 85 a2 01 00 00 8b 95 38 02 00 00 85 d2 0f 85 89 01 [ 6.004506] RSP: 0018:ffffb43cc0dafdf0 EFLAGS: 00010246 [ 6.004507] RAX: 0000000000000000 RBX: ffff9d21b925cb00 RCX: ffff9d21b973009c [ 6.004508] RDX: 0000000000000001 RSI: ffff9d21b925cb00 RDI: ffff9d21b925cb00 [ 6.004508] RBP: ffff9d21b9730000 R08: 0000000000200000 R09: 0000000000000000 [ 6.004509] R10: ffffb43cc0dafe78 R11: 61c8864680b583eb R12: ffff9d21ba0cd000 [ 6.004509] R13: ffffffff8d95a460 R14: 0000000000000000 R15: 0000000000000020 [ 6.004512] FS: 00007fad96cea480(0000) GS:ffff9d21bab80000(0000) knlGS:0000000000000000 [ 6.004514] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.004515] CR2: 0000000000000068 CR3: 0000000178dec000 CR4: 00000000000006e0 [ 6.004516] Call Trace: [ 6.004530] ? debugfs_get_inode+0x50/0x50 [ 6.022494] vfs_get_super+0x9c/0xe0 [ 6.022973] vfs_get_tree+0x38/0xf0 [ 6.023451] do_mount+0x728/0xd20 [ 6.023905] ? _copy_from_user+0x37/0x60 [ 6.024436] ? memdup_user+0x39/0x60 [ 6.024917] ksys_mount+0x7b/0xd0 [ 6.025368] __x64_sys_mount+0x1c/0x20 [ 6.025876] do_syscall_64+0x43/0xf0 [ 6.026375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Do I miss some other fix? Thanks, //richard
