erofs-utils: mkfs: Turn off deduplication under chunk mode with '-E^dedupe'
With '-E^dedupe', deduplication will be disabled even in chunk mode.
This is currently mandatory when mounting EROFS with DAX.
Deduplicated chunks are shared among multiple files or between different
parts of the same file. Kernel DAX map got wrong when map them.
[ 2.031496] WARNING: CPU: 0 PID: 1 at fs/dax.c:460 dax_insert_entry+0x36e/0x380
[ 2.031978] Modules linked in:
[ 2.032173] CPU: 0 UID: 0 PID: 1 Comm: init Not tainted 6.17.0-rc2+ #111 PREEMPT(voluntary)
[ 2.032688] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.033291] RIP: 0010:dax_insert_entry+0x36e/0x380
[ 2.033591] Code: 59 fe ff ff 48 8b 30 b9 09 00 00 00 83 e6 40 0f 85 70 ff ff ff e9 77 ff ff ff 31 f6 90 0f 0b 90 85 f6 75 ae e9 34 fe ff
ff 90 <0f> 0b 90 e9 02 fe ff ff be 09 00 00 00 eb e3 0f 1f 00 90 90 90 90
[ 2.034654] RSP: 0000:ffffb93fc0013b88 EFLAGS: 00010086
[ 2.034948] RAX: ffffe124441dc140 RBX: ffffb93fc0013c78 RCX: 0000000000000000
[ 2.035339] RDX: 00007f310337c000 RSI: 0000000000000000 RDI: ffffe124441dc140
[ 2.035730] RBP: 00000000020ee0a1 R08: 0000000001077050 R09: 0000000000000000
[ 2.036120] R10: ffffb93fc0013cd8 R11: 0000000000001000 R12: 0000000000000011
[ 2.036513] R13: 0000000000000000 R14: fffffffffffff000 R15: 00000000020ee0a1
[ 2.036912] FS: 00007f31026ad940(0000) GS:ffff90436812c000(0000) knlGS:0000000000000000
[ 2.037352] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.037669] CR2: 00007f31033c2216 CR3: 0000000001d17006 CR4: 0000000000770ef0
[ 2.038062] PKRU: 55555554
[ 2.038216] Call Trace:
[ 2.038363] <TASK>
[ 2.038486] dax_fault_iter+0x286/0x6a0
[ 2.038704] dax_iomap_pte_fault+0x17f/0x370
[ 2.038950] __do_fault+0x30/0xc0
[ 2.039153] __handle_mm_fault+0x90a/0x15a0
[ 2.039391] handle_mm_fault+0xde/0x240
[ 2.039607] do_user_addr_fault+0x166/0x640
[ 2.039853] exc_page_fault+0x74/0x170
[ 2.040087] asm_exc_page_fault+0x26/0x30
[ 2.040319] RIP: 0033:0x7f31039389bd
[ 2.040519] Code: 08 48 8b 85 68 ff ff ff 48 8b bd 60 ff ff ff 48 8b b5 58 ff ff ff 4c 89 f2 48 03 33 45 89 f7 48 c1 ea 20 48 89 b5 70 ff
ff ff <0f> b7 04 50 48 8d 14 52 4c 8d 24 d7 25 ff 7f 00 00 4c 89 65 80 48
Signed-off-by: Friendy Su <friendy.su@sony.com>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Daniel Palmer <daniel.palmer@sony.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20251030041525.2094223-1-hsiangkao@linux.alibaba.com
5 files changed
