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| author |   David Disseldorp <ddiss@suse.de> | 2020-02-19 14:01:35 +0100 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-21 17:37:13 -0500 |
| commit | 738981bd74e89d5de012c56a20427e34c6937334 (patch) | |
| tree | 63a7c20558931cdf7e58fc0a1068c55d5d4d18de /drivers/target/target_core_device.c | |
| parent | scsi: advansys: Replace zero-length array with flexible-array member (diff) | |
| download | wireguard-linux-738981bd74e89d5de012c56a20427e34c6937334.tar.xz wireguard-linux-738981bd74e89d5de012c56a20427e34c6937334.zip | |
scsi: target: fix unmap_zeroes_data boolean initialisation
The LIO unmap_zeroes_data device attribute is mapped to the LBPRZ flag in
the READ CAPACITY(16) and Thin Provisioning VPD INQUIRY responses.
The unmap_zeroes_data attribute is exposed via configfs, where any write
value is correctly validated via strtobool(). However, when initialised via
target_configure_unmap_from_queue() it takes the value of the device's
max_write_zeroes_sectors queue limit, which is non-boolean.
A non-boolean value can be read from configfs, but attempting to write the
same value back results in -EINVAL, causing problems for configuration
utilities such as targetcli.
Link: https://marc.info/?l=target-devel&m=158213354011309
Fixes: 2237498f0b5c ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target/target_core_device.c')
| -rw-r--r-- | drivers/target/target_core_device.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 2d19f0e332b0..2c7ba2f7e13c 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -829,7 +829,7 @@ bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, attrib->unmap_granularity = q->limits.discard_granularity / block_size; attrib->unmap_granularity_alignment = q->limits.discard_alignment / block_size; - attrib->unmap_zeroes_data = (q->limits.max_write_zeroes_sectors); + attrib->unmap_zeroes_data = !!(q->limits.max_write_zeroes_sectors); return true; } EXPORT_SYMBOL(target_configure_unmap_from_queue); |