kernel/linux.git/drivers/md/dm-stats.c, branch v6.6.141Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.6.1412023-03-16T17:37:06+00:00dm stats: check for and propagate alloc_percpu failure2023-03-16T17:37:06+00:00Jiasheng Jiangjiasheng@iscas.ac.cn2023-03-16T06:55:06+00:00urn:sha1:d3aa3e060c4a80827eb801fc448debc9daa7c46b
Check alloc_precpu()'s return value and return an error from
dm_stats_init() if it fails. Update alloc_dev() to fail if
dm_stats_init() does.
Otherwise, a NULL pointer dereference will occur in dm_stats_cleanup()
even if dm-stats isn't being actively used.
Fixes: fd2ed4d25270 ("dm: add statistics support")
Cc: stable@vger.kernel.org
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: avoid using symbolic permissions2023-02-14T19:23:07+00:00Heinz Mauelshagenheinzm@redhat.com2023-02-06T22:58:05+00:00urn:sha1:6a808034724b5a36f8e0b712427bfbe9e667d296
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: remove unnecessary braces from single statement blocks2023-02-14T19:23:06+00:00Heinz Mauelshagenheinzm@redhat.com2023-02-02T16:10:52+00:00urn:sha1:2d0f25cbc0d948e01573cc8ff5967e81bd98a4a1
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: add missing empty lines2023-02-14T19:23:06+00:00Heinz Mauelshagenheinzm@redhat.com2023-02-01T22:42:29+00:00urn:sha1:0ef0b4717aa6849d251b23ae1efe93ca93af540b
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: avoid assignment in if conditions2023-02-14T19:23:06+00:00Heinz Mauelshagenheinzm@redhat.com2023-02-01T20:17:44+00:00urn:sha1:d715fa23577cd5d36830c4ecd7e2bfcb4750b351
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: change "unsigned" to "unsigned int"2023-02-14T19:23:06+00:00Heinz Mauelshagenheinzm@redhat.com2023-01-25T20:14:58+00:00urn:sha1:86a3238c7b9b759cb864f4f768ab2e24687dc0e6
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: add missing SPDX-License-Indentifiers2023-02-14T19:23:06+00:00Heinz Mauelshagenheinzm@redhat.com2023-01-25T20:00:44+00:00urn:sha1:3bd940030752a33ff665eefdd74a1cdb74a4f9b0
'GPL-2.0-only' is used instead of 'GPL-2.0' because SPDX has
deprecated its use.
Suggested-by: John Wiele <jwiele@redhat.com>
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: change from DMWARN to DMERR or DMCRIT for fatal errors2022-10-18T21:16:00+00:00Mikulas Patockampatocka@redhat.com2022-08-24T11:25:57+00:00urn:sha1:43e6c111824c75940a586cd7d3fe6a5ff1d5104f
Change DMWARN to DMERR in cases when there is an unrecoverable error.
Change DMWARN to DMCRIT when handling of a case is unimplemented.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm stats: add cond_resched when looping over entries2022-05-09T16:11:07+00:00Mikulas Patockampatocka@redhat.com2022-04-24T20:43:00+00:00urn:sha1:bfe2b0146c4d0230b68f5c71a64380ff8d361f8b
dm-stats can be used with a very large number of entries (it is only
limited by 1/4 of total system memory), so add rescheduling points to
the loops that iterate over the entries.
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
dm: conditionally enable branching for less used features2022-05-05T21:31:34+00:00Mike Snitzersnitzer@kernel.org2022-03-26T18:14:00+00:00urn:sha1:442761fd2b297d65d1cb5786249e1e07a19e9122
Use jump_labels to further reduce cost of unlikely branches for zoned
block devices, dm-stats and swap_bios throttling.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>