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| author | Christoph Hellwig <hch@lst.de> | 2022-04-15 06:52:55 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-04-17 19:49:59 -0600 |
| commit | 70200574cc229f6ba038259e8142af2aa09e6976 (patch) | |
| tree | 07398810532d1e075f413bb4771d7b90b40b1226 /fs/ext4/super.c | |
| parent | cf0fbf894bb543f472f682c486be48298eccf199 (diff) | |
| download | linux-next-70200574cc229f6ba038259e8142af2aa09e6976.tar.gz | |
block: remove QUEUE_FLAG_DISCARD
Just use a non-zero max_discard_sectors as an indicator for discard
support, similar to what is done for write zeroes.
The only places where needs special attention is the RAID5 driver,
which must clear discard support for security reasons by default,
even if the default stacking rules would allow for it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd]
Acked-by: Jan Höppner <hoeppner@linux.ibm.com> [s390]
Acked-by: Coly Li <colyli@suse.de> [bcache]
Acked-by: David Sterba <dsterba@suse.com> [btrfs]
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220415045258.199825-25-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 81749eaddf4c..93f4e4e9e263 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5458,13 +5458,9 @@ no_journal: goto failed_mount9; } - if (test_opt(sb, DISCARD)) { - struct request_queue *q = bdev_get_queue(sb->s_bdev); - if (!blk_queue_discard(q)) - ext4_msg(sb, KERN_WARNING, - "mounting with \"discard\" option, but " - "the device does not support discard"); - } + if (test_opt(sb, DISCARD) && !bdev_max_discard_sectors(sb->s_bdev)) + ext4_msg(sb, KERN_WARNING, + "mounting with \"discard\" option, but the device does not support discard"); if (es->s_error_count) mod_timer(&sbi->s_err_report, jiffies + 300*HZ); /* 5 minutes */ |