diff options
author | Martin K. Petersen <martin.petersen@oracle.com> | 2019-05-20 10:57:18 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-11 12:23:51 +0200 |
commit | 582bb52e480381a44c78dc758fe9199840ae8f92 (patch) | |
tree | a8a94c39ef624165402c298a28235b85ab23e1a9 /drivers/scsi | |
parent | bd020b331706146be592f5c9eb2b8e357d2b7ce0 (diff) |
Revert "scsi: sd: Keep disk read-only when re-reading partition"
commit 8acf608e602f6ec38b7cc37b04c80f1ce9a1a6cc upstream.
This reverts commit 20bd1d026aacc5399464f8328f305985c493cde3.
This patch introduced regressions for devices that come online in
read-only state and subsequently switch to read-write.
Given how the partition code is currently implemented it is not
possible to persist the read-only flag across a device revalidate
call. This may need to get addressed in the future since it is common
for user applications to proactively call BLKRRPART.
Reverting this commit will re-introduce a regression where a
device-initiated revalidate event will cause the admin state to be
forgotten. A separate patch will address this issue.
Fixes: 20bd1d026aac ("scsi: sd: Keep disk read-only when re-reading partition")
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/sd.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 62adaca8fb97..91b9eca75b75 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2396,7 +2396,6 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) int res; struct scsi_device *sdp = sdkp->device; struct scsi_mode_data data; - int disk_ro = get_disk_ro(sdkp->disk); int old_wp = sdkp->write_prot; set_disk_ro(sdkp->disk, 0); @@ -2437,7 +2436,7 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) "Test WP failed, assume Write Enabled\n"); } else { sdkp->write_prot = ((data.device_specific & 0x80) != 0); - set_disk_ro(sdkp->disk, sdkp->write_prot || disk_ro); + set_disk_ro(sdkp->disk, sdkp->write_prot); if (sdkp->first_scan || old_wp != sdkp->write_prot) { sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s\n", sdkp->write_prot ? "on" : "off"); |