linux.git/drivers/target/target_core_file.c, branch v3.12 Linux kernel source tree target: Update copyright ownership/year information to 2013 2013-09-11T03:23:36+00:00 Nicholas Bellinger nab@linux-iscsi.org 2013-09-05T22:29:12+00:00 4c76251e8e8f704ed7eace603a8041458a1ed16f Update copyright ownership/year information for target-core, loopback, iscsi-target, tcm_qla2xx, vhost and iser-target. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
Update copyright ownership/year information for target-core,
loopback, iscsi-target, tcm_qla2xx, vhost and iser-target.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target: Allow sbc_ops->execute_rw() to accept SGLs + data_direction 2013-09-09T21:29:28+00:00 Nicholas Bellinger nab@daterainc.com 2013-08-20T06:57:30+00:00 a82a9538dd30471e6428a2d55e91e986c439866b COMPARE_AND_WRITE expects to be able to send down a DMA_FROM_DEVICE to obtain the necessary READ payload for comparision against the first half of the WRITE payload containing the verify user data. Currently virtual backends expect to internally reference SGLs, SGL nents, and data_direction, so change IBLOCK, FILEIO and RD sbc_ops->execute_rw() to accept this values as function parameters. Also add default sbc_execute_rw() handler for the typical case for cmd->execute_rw() submission using cmd->t_data_sg, cmd->t_data_nents, and cmd->data_direction). v2 Changes: - Add SCF_COMPARE_AND_WRITE command flag - Use sbc_execute_rw() for normal cmd->execute_rw() submission with expected se_cmd members. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com> 
COMPARE_AND_WRITE expects to be able to send down a DMA_FROM_DEVICE
to obtain the necessary READ payload for comparision against the
first half of the WRITE payload containing the verify user data.

Currently virtual backends expect to internally reference SGLs,
SGL nents, and data_direction, so change IBLOCK, FILEIO and RD
sbc_ops->execute_rw() to accept this values as function parameters.

Also add default sbc_execute_rw() handler for the typical case for
cmd->execute_rw() submission using cmd->t_data_sg, cmd->t_data_nents,
and cmd->data_direction).

v2 Changes:
  - Add SCF_COMPARE_AND_WRITE command flag
  - Use sbc_execute_rw() for normal cmd->execute_rw() submission
    with expected se_cmd members.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
target: replace strict_strto*() with kstrto*() 2013-08-13T03:31:44+00:00 Jingoo Han jg1.han@samsung.com 2013-07-19T07:22:19+00:00 57103d7fe1833857cf542a482c1eb8da0bf86e5d The usage of strict_strtoul() and strict_strtoull() is not preferred, because strict_strtoul() and strict_strtoull() are obsolete. Thus, kstrtoul() and kstrtoull() should be used. v2: Fix incorrect return in ft_add_tpg (Fengguang) Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
The usage of strict_strtoul() and strict_strtoull() is not preferred,
because strict_strtoul() and strict_strtoull() are obsolete. Thus,
kstrtoul() and kstrtoull() should be used.

v2: Fix incorrect return in ft_add_tpg (Fengguang)

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target/file: Fix off-by-one READ_CAPACITY bug for !S_ISBLK export 2013-05-31T00:46:27+00:00 Nicholas Bellinger nab@linux-iscsi.org 2013-05-30T04:35:23+00:00 21363ca873334391992f2f424856aa864345bb61 This patch fixes a bug where FILEIO was incorrectly reporting the number of logical blocks (+ 1) when using non struct block_device export mode. It changes fd_get_blocks() to follow all other backend ->get_blocks() cases, and reduces the calculated dev_size by one dev->dev_attrib.block_size number of bytes, and also fixes initial fd_block_size assignment at fd_configure_device() time introduced in commit 0fd97ccf4. Reported-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Reported-by: Badari Pulavarty <pbadari@us.ibm.com> Tested-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
This patch fixes a bug where FILEIO was incorrectly reporting the number
of logical blocks (+ 1) when using non struct block_device export mode.

It changes fd_get_blocks() to follow all other backend ->get_blocks() cases,
and reduces the calculated dev_size by one dev->dev_attrib.block_size
number of bytes, and also fixes initial fd_block_size assignment at
fd_configure_device() time introduced in commit 0fd97ccf4.

Reported-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Reported-by: Badari Pulavarty <pbadari@us.ibm.com>
Tested-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target: Use FD_MAX_SECTORS/FD_BLOCKSIZE for blockdevs using fileio 2013-05-03T23:44:24+00:00 Andy Grover agrover@redhat.com 2013-04-26T18:09:03+00:00 e3e84cda321703b123f36488f50700f371bc7230 We can still see the error reported in https://patchwork.kernel.org/patch/2338981/ when using fileio backed by a block device. I'm assuming this will get us past that error (from sbc_parse_cdb), and also assuming it's OK to have our max_sectors be larger than the block's queue max hw sectors? Reported-by: Eric Harney <eharney@redhat.com> Signed-off-by: Andy Grover <agrover@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
We can still see the error reported in

https://patchwork.kernel.org/patch/2338981/

when using fileio backed by a block device.

I'm assuming this will get us past that error (from sbc_parse_cdb),
and also assuming it's OK to have our max_sectors be larger than
the block's queue max hw sectors?

Reported-by: Eric Harney <eharney@redhat.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target/file: Set is_nonrot attribute 2013-04-25T08:05:25+00:00 Asias He asias@redhat.com 2013-04-25T02:38:11+00:00 0463a3fefda4cf0591edc685d4fb215a33315e01 Set is_nonrot attribute according to the block queue if the backend device is a block device. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
Set is_nonrot attribute according to the block queue if the backend
device is a block device.

Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target: Add sbc_execute_unmap() helper 2013-04-25T08:05:24+00:00 Asias He asias@redhat.com 2013-02-25T06:03:46+00:00 86d7182985d25900929adce14fffd729cc8c6fb8 iblock_execute_unmap() and fd_execute_unmap share a lot of code. Add sbc_execute_unmap() helper to remove duplicated code for iblock_execute_unmap() and fd_execute_unmap(). Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
iblock_execute_unmap() and fd_execute_unmap share a lot of code.
Add sbc_execute_unmap() helper to remove duplicated code for
iblock_execute_unmap() and fd_execute_unmap().

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target/file: Add fd_do_unmap() helper 2013-04-25T08:05:24+00:00 Asias He asias@redhat.com 2013-02-25T06:03:44+00:00 43f55bbb144acca55cea50326388d1b648b6fd0f Add helper fd_do_unmap() to remove duplicated code in fd_execute_write_same_unmap() and fd_execute_unmap(). Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
Add helper fd_do_unmap() to remove duplicated code in
fd_execute_write_same_unmap() and fd_execute_unmap().

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target/file: Add UNMAP emulation support 2013-04-25T08:05:23+00:00 Asias He asias@redhat.com 2013-02-25T06:03:43+00:00 506427628afeb5d70eefdac1fe4c2a1ffb27df5f This patch adds support for emulation of UNMAP within fd_execute_unmap() backend code. If the FILEIO backend is normal file, the emulation uses fallocate to punch hole to reclaim the free space used by the file. If the FILEIO backend is block device, the emulation uses blkdev_issue_discard(). Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
This patch adds support for emulation of UNMAP within
fd_execute_unmap() backend code.

If the FILEIO backend is normal file, the emulation uses fallocate to
punch hole to reclaim the free space used by the file. If the FILEIO
backend is block device, the emulation uses blkdev_issue_discard().

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target/file: Add WRITE_SAME w/ UNMAP=1 emulation support 2013-04-25T08:05:23+00:00 Asias He asias@redhat.com 2013-02-25T06:03:42+00:00 70d3ae5c80758cb2bf3cf1e0d5b2c89d040de90b This patch adds support for emulation of WRITE_SAME w/ UNMAP=1 within fd_execute_write_same_unmap() backend code. If the FILEIO backend is normal file, the emulation uses fallocate to punch hole to reclaim the free space used by the file. If the FILEIO backend is block device, the emulation uses blkdev_issue_discard(). Tested with 512, 1k, 2k, and 4k block_sizes. Changes in v2: - Set the various dev->dev_attrib.*unmap* values (nab) Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 
This patch adds support for emulation of WRITE_SAME w/ UNMAP=1 within
fd_execute_write_same_unmap() backend code.

If the FILEIO backend is normal file, the emulation uses fallocate to
punch hole to reclaim the free space used by the file. If the FILEIO
backend is block device, the emulation uses blkdev_issue_discard().

Tested with 512, 1k, 2k, and 4k block_sizes.

Changes in v2:
- Set the various dev->dev_attrib.*unmap* values (nab)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>