https://bugzilla.kernel.org/show_bug.cgi?id=219484
Chao Yu (c...@kernel.org) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |c...@kernel.org
--- Comment #1 from Chao Yu (c...@kernel.org) ---
Hi, thanks for your report.
Can you please help to check max_hw_discard_sectors parameter of dm device
via "cat /sys/block/<device_name>/queue/max_hw_discard_sectors"?
I doubt max_discard_blocks becomes zero in __submit_discard_cmd(), result
in that __blkdev_issue_discard() fails to allocate bio.
__submit_discard_cmd()
{
unsigned int max_discard_blocks =
SECTOR_TO_BLOCK(bdev_max_discard_sectors(bdev));
...
while () {
...
if (len > max_discard_blocks) {
len = max_discard_blocks;
last = false;
}
...
} else {
err = __blkdev_issue_discard(bdev,
SECTOR_FROM_BLOCK(start),
SECTOR_FROM_BLOCK(len),
GFP_NOFS, &bio);
}
...
f2fs_bug_on(sbi, !bio); // trigger warning here and panic below
}
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