linux-ext4 - Re: [PATCH 17/19] jbd2: Rename h_buffer_credits to h_total

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Date:   Mon, 30 Sep 2019 17:21:45 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Jan Kara <jack@...e.cz>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: [PATCH 17/19] jbd2: Rename h_buffer_credits to h_total_credits

On Mon, Sep 30, 2019 at 06:25:36PM +0200, Jan Kara wrote:
> The problem was that my patches were based on a kernel that didn't have
> this code yet. I've rebased now on current Linus' tree and fixed this up in
> my local tree (along with couple documentation warnings). But I don't think
> it's worth resending just for this.

Oh, agreed, it's not worth resending for this; it was a quick fixup.

How much testing have you given this patch series?  I did a quick
xfstests run, and I found the following new failures when this was
applied on top of the dev branch on ext4.git (e.g., what got sent to
Linus as a pull request).

ext4/4k: 
  Failures: ext4/026 generic/233
ext4/1k: 
  Failures: ext4/026
ext4/ext3: 
  Failures: ext4/026 generic/233
ext4/encrypt: 
  Failures: generic/083
ext4/nojournal:
  Failures: ext4/301
ext4/adv: 
  Failures: ext4/026 generic/233 generic/269 generic/270 generic/476
ext4/dioread_nolock: 
  Failures: ext4/026 generic/233
ext4/data_journal: 
  Failures: generic/233
ext4/bigalloc: 
  Failures: generic/013 generic/014 generic/051 generic/083
    generic/232 generic/233 generic/269 generic/270 generic/299
    generic/429 generic/475 generic/476
ext4/bigalloc_1k: 
  Failures: ext4/026 generic/013 generic/014 generic/032 generic/051
    generic/068 generic/083 generic/232 generic/233 generic/269
    generic/270 generic/320 generic/475 generic/476

I haven't trianged them all yet, but here are the details for the two
biggies: ext4/026 and generic/233.

					- Ted

ext4/026		[14:11:43][   14.287850] run fstests ext4/026 at 2019-09-30 14:11:43
[   14.821933] WARNING: CPU: 0 PID: 1542 at fs/jbd2/revoke.c:394 jbd2_journal_revoke+0x14b/0x160
[   14.824000] CPU: 0 PID: 1542 Comm: rm Not tainted 5.3.0-rc4-xfstests-00019-ga8d18e88fd60-dirty #1201
[   14.826111] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   14.828039] RIP: 0010:jbd2_journal_revoke+0x14b/0x160
[   14.829217] Code: 4c 89 f7 e8 77 8c ef ff eb a6 e8 d0 8d ef ff 48 85 c0 49 89 c6 74 99 48 8b 00 a9 00 00 10 00 0f 84 5b ff ff ff e9 71 06 00 00 <0f> 0b eb 89 0f 0b 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f
[   14.833505] RSP: 0018:ffffae0ec2683ad8 EFLAGS: 00010246
[   14.834721] RAX: 0000000000000000 RBX: ffff951876a9f410 RCX: 1111111111111120
[   14.836287] RDX: 0000000000000004 RSI: 0000000000000006 RDI: ffff951876a9f410
[   14.837853] RBP: ffff951874f1f6c8 R08: 0000000373745034 R09: 0000000000000000
[   14.839244] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000840d
[   14.840799] R13: ffff951876695000 R14: ffff951876a9f410 R15: 0000000000000001
[   14.842349] FS:  00007f39e17b5540(0000) GS:ffff95187d800000(0000) knlGS:0000000000000000
[   14.844125] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.845403] CR2: 00007f39e16ba4a0 CR3: 0000000075b9e006 CR4: 0000000000360ef0
[   14.847055] Call Trace:
[   14.847628]  __ext4_forget+0xf2/0x280
[   14.848470]  ext4_free_blocks+0x9c8/0xc00
[   14.849270]  ? __lock_acquire+0x447/0x7c0
[   14.850174]  ? kvm_sched_clock_read+0x14/0x30
[   14.851182]  ext4_remove_blocks+0x33c/0x630
[   14.852190]  ext4_ext_rm_leaf+0x1fb/0x7a0
[   14.853493]  ext4_ext_remove_space+0x556/0xa80
[   14.855020]  ? ext4_es_remove_extent+0x9d/0x180
[   14.856325]  ext4_truncate+0x413/0x520
[   14.857374]  ext4_evict_inode+0x29c/0x670
[   14.858329]  evict+0xd0/0x1a0
[   14.859157]  ext4_xattr_inode_array_free+0x27/0x40
[   14.860341]  ext4_evict_inode+0x31c/0x670
[   14.861344]  evict+0xd0/0x1a0
[   14.862107]  do_unlinkat+0x1cd/0x2e0
[   14.862769]  do_syscall_64+0x50/0x1b0
[   14.863387]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   14.864219] RIP: 0033:0x7f39e16deff7
[   14.864813] Code: 73 01 c3 48 8b 0d 99 ee 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 69 ee 0c 00 f7 d8 64 89 01 48
[   14.867949] RSP: 002b:00007fff3ed46068 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[   14.869197] RAX: ffffffffffffffda RBX: 0000561d094937b0 RCX: 00007f39e16deff7
[   14.870371] RDX: 0000000000000000 RSI: 0000561d09492340 RDI: 00000000ffffff9c
[   14.871544] RBP: 0000561d094922b0 R08: 0000000000000003 R09: 0000000000000000
[   14.872766] R10: 0000000000000100 R11: 0000000000000246 R12: 00007fff3ed46250
[   14.873950] R13: 0000000000000000 R14: 0000561d094937b0 R15: 0000000000000000
[   14.875156] irq event stamp: 2176
[   14.875720] hardirqs last  enabled at (2175): [<ffffffffb16663e1>] kmem_cache_free+0x51/0x220
[   14.877150] hardirqs last disabled at (2176): [<ffffffffb14016aa>] trace_hardirqs_off_thunk+0x1a/0x20
[   14.878702] softirqs last  enabled at (814): [<ffffffffb14297f3>] fpu__clear+0xb3/0x1b0
[   14.880055] softirqs last disabled at (812): [<ffffffffb14297b5>] fpu__clear+0x75/0x1b0
[   14.881926] ---[ end trace 4d44757f1901181f ]---
_check_dmesg: something found in dmesg (see /results/ext4/results-4k/ext4/026.dmesg)
 [14:11:44]


generic/233 		[14:18:34][   19.736637] run fstests generic/233 at 2019-09-30 14:18:34
[   21.400934] EXT4-fs (vdc): Delayed block allocation failed for inode 131809 at logical offset 209 with max blocks 9 with error 122
[   21.404197] EXT4-fs (vdc): This should not happen!! Data will be lost
[   21.404197]
 [14:18:36] 2s