diff options
| author | fluxi <linflux@arcor.de> | 2016-10-21 22:57:35 +0200 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:59:53 +0200 |
| commit | 3e9ed1136549f715b26e04cc7a749b9e6e612db1 (patch) | |
| tree | b83641199218173cd2b4485f3d114defdfbd5939 /include | |
| parent | 73410a26f7c5d013055cddbd271520fb351afacd (diff) | |
sdcardfs: Flag files as non-mappable
Implement Samsung's FMODE_NONMAPPABLE flag from
sdcardfs version 2.1.4 as we hit a BUG on ext4:
[ 49.655037]@0 Kernel BUG at ffffffc0001deeec [verbose debug info unavailable]
[ 49.655045]@0 Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 49.655052]@0 Modules linked in:
[ 49.655061]@0 CPU: 0 PID: 283 Comm: kworker/u8:7 Tainted: G W 3.18.20-perf-g3be2054-00086-ga8307fb #1
[ 49.655070]@0 Hardware name: Qualcomm Technologies, Inc. MSM 8996 v3 + PMI8996 MTP (DT)
[ 49.655077]@0 Workqueue: writeback bdi_writeback_workfn (flush-8:0)
[ 49.655096]@0 task: ffffffc174ba8b00 ti: ffffffc174bb4000 task.ti: ffffffc174bb4000
[ 49.655108]@0 PC is at mpage_prepare_extent_to_map+0x198/0x218
[ 49.655116]@0 LR is at mpage_prepare_extent_to_map+0x110/0x218
[ 49.655121]@0 pc : [<ffffffc0001deeec>] lr : [<ffffffc0001dee64>] pstate: 60000145
[ 49.655126]@0 sp : ffffffc174bb7800
[ 49.655130]@0 x29: ffffffc174bb7800 x28: ffffffc174bb7880
[ 49.655140]@0 x27: 000000000000000d x26: ffffffc1245505e8
[ 49.655149]@0 x25: 0000000000000000 x24: 0000000000003400
[ 49.655160]@0 x23: ffffffffffffffff x22: 0000000000000000
[ 49.655172]@0 x21: ffffffc174bb7888 x20: ffffffc174bb79e0
[ 49.655182]@0 x19: ffffffbdc4ee7b80 x18: 0000007f92872000
[ 49.655191]@0 x17: 0000007f959b6424 x16: ffffffc00016d1ac
[ 49.655201]@0 x15: 0000007f9285d158 x14: ffffffc1734796e8
[ 49.655210]@0 x13: ffffffbdc1ffa4c0 x12: ffffffbdc4ee7b80
[ 49.655220]@0 x11: 0000000000000100 x10: 0000000000000000
[ 49.655229]@0 x9 : 0000000000000000 x8 : ffffffc0b444e210
[ 49.655237]@0 x7 : 0000000000000000 x6 : ffffffc0b444e1e0
[ 49.655246]@0 x5 : 0000000000000000 x4 : 0000000000000001
[ 49.655254]@0 x3 : 0000000000000000 x2 : 400000000002003d
[ 49.655263]@0 x1 : ffffffbdc4ee7b80 x0 : 400000000002003d
[ 49.655271]@0
[ 49.656502]@0 Process kworker/u8:7 (pid: 283, stack limit = 0xffffffc174bb4058)
[ 49.656509]@0 Call trace:
[ 49.656514]@0 [<ffffffc0001deeec>] mpage_prepare_extent_to_map+0x198/0x218
[ 49.656526]@0 [<ffffffc0001e28d0>] ext4_writepages+0x270/0xa58
[ 49.656533]@0 [<ffffffc00012982c>] do_writepages+0x24/0x40
[ 49.656541]@0 [<ffffffc000180160>] __writeback_single_inode+0x40/0x114
[ 49.656549]@0 [<ffffffc000180e50>] writeback_sb_inodes+0x1dc/0x34c
[ 49.656555]@0 [<ffffffc00018103c>] __writeback_inodes_wb+0x7c/0xc4
[ 49.656560]@0 [<ffffffc000181224>] wb_writeback+0x110/0x1a8
[ 49.656565]@0 [<ffffffc000181344>] wb_check_old_data_flush+0x88/0x98
[ 49.656571]@0 [<ffffffc00018156c>] bdi_writeback_workfn+0xf4/0x1fc
[ 49.656576]@0 [<ffffffc0000b14f8>] process_one_work+0x1e0/0x300
[ 49.656585]@0 [<ffffffc0000b1e14>] worker_thread+0x318/0x438
[ 49.656590]@0 [<ffffffc0000b5da0>] kthread+0xe0/0xec
[ 49.656598]@0 Code: f9400260 f9400a63 1ad92063 37580040 (e7f001f2)
[ 49.656604]@0 ---[ end trace cbed09f772fd630d ]---
Change-Id: I931da7cb3841db1f130dba298a7d256b6f02d1bc
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 056af1df3..78a43d84a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -122,6 +122,9 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset, /* File is opened with O_PATH; almost nothing can be done with it */ #define FMODE_PATH ((__force fmode_t)0x4000) +/* File hasn't page cache and can't be mmaped, for stackable filesystem */ +#define FMODE_NONMAPPABLE ((__force fmode_t)0x400000) + /* File was opened by fanotify and shouldn't generate fanotify events */ #define FMODE_NONOTIFY ((__force fmode_t)0x1000000) @@ -1533,6 +1536,7 @@ struct file_operations { long (*fallocate)(struct file *file, int mode, loff_t offset, loff_t len); int (*show_fdinfo)(struct seq_file *m, struct file *f); + struct file* (*get_lower_file)(struct file *f); }; struct inode_operations { |