Alessio Balsini
6303b51d18
loop: Add LOOP_SET_DIRECT_IO to compat ioctl ...
[ Upstream commit fdbe4eeeb1aac219b14f10c0ed31ae5d1123e9b8 ]
Enabling Direct I/O with loop devices helps reducing memory usage by
avoiding double caching. 32 bit applications running on 64 bits systems
are currently not able to request direct I/O because is missing from the
lo_compat_ioctl.
This patch fixes the compatibility issue mentioned above by exporting
LOOP_SET_DIRECT_IO as additional lo_compat_ioctl() entry.
The input argument for this ioctl is a single long converted to a 1-bit
boolean, so compatibility is preserved.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Alessio Balsini <balsini@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29 09:15:09 +01:00
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2016-11-12 08:27:07 -07:00
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Revert "mtip32xx: use runtime tag to initialize command header"
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ataflop: fix error handling during setup
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block: convert to device_add_disk()
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floppy: fix usercopy direction
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block: hd: remove deprecated IRQF_DISABLED
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cpqarray: remove it from the kernel
2016-03-14 09:06:01 -06:00
loop: Add LOOP_SET_DIRECT_IO to compat ioctl
2019-10-29 09:15:09 +01:00
Revert "block/loop: Use global lock for ioctl() operation."
2019-05-02 09:32:04 +02:00
drivers:block: cpqarray clean up
2016-03-15 15:59:47 -07:00
mg_disk: fix error path in mg_probe()
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nbd: Use set_blocksize() to set device blocksize
2019-01-23 08:10:57 +01:00
Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block
2016-10-09 17:29:33 -07:00
block, drivers: add REQ_OP_FLUSH operation
2016-06-07 13:41:38 -06:00
pktcdvd: Fix pkt_setup_dev() error path
2018-02-17 13:21:19 +01:00
block: convert to device_add_disk()
2016-06-27 12:26:08 -07:00
block: convert to device_add_disk()
2016-06-27 12:26:08 -07:00
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skd: Submit requests to firmware before triggering the doorbell
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2019-02-12 19:44:53 +01:00
swim: fix cleanup on setup error
2018-11-13 11:16:49 -08:00
block/swim3: Fix -EBUSY error when re-opening device after unmount
2019-02-12 19:44:58 +01:00
sx8: use real time for the command seconds
2015-12-23 08:42:59 -07:00
block: rename bio bi_rw to bi_opf
2016-08-07 14:41:02 -06:00
virtio-blk: limit number of hw queues by nr_cpu_ids
2019-05-10 17:52:09 +02:00
xen/blkfront: avoid NULL blkfront_info dereference on device removal
2018-11-13 11:16:54 -08:00
xsysace: Fix error handling in ace_setup
2019-05-08 07:19:11 +02:00
6303b51d18