Revision 9f141d6ef6258a3a37a045842d9ba7e68f368956 authored by Jan Kara on 19 October 2016, 12:34:31 UTC, committed by Dan Williams on 27 December 2016, 04:29:25 UTC
Currently ->iomap_begin() handler is called with entry lock held. If the filesystem held any locks between ->iomap_begin() and ->iomap_end() (such as ext4 which will want to hold transaction open), this would cause lock inversion with the iomap_apply() from standard IO path which first calls ->iomap_begin() and only then calls ->actor() callback which grabs entry locks for DAX (if it faults when copying from/to user provided buffers). Fix the problem by nesting grabbing of entry lock inside ->iomap_begin() - ->iomap_end() pair. Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
1 parent f449b93
Kconfig
#
# PCMCIA SCSI adapter configuration
#
menuconfig SCSI_LOWLEVEL_PCMCIA
bool "PCMCIA SCSI adapter support"
depends on SCSI!=n && PCMCIA!=n
# drivers have problems when build in, so require modules
if SCSI_LOWLEVEL_PCMCIA && SCSI && PCMCIA && m
config PCMCIA_AHA152X
tristate "Adaptec AHA152X PCMCIA support"
select SCSI_SPI_ATTRS
help
Say Y here if you intend to attach this type of PCMCIA SCSI host
adapter to your computer.
To compile this driver as a module, choose M here: the
module will be called aha152x_cs.
config PCMCIA_FDOMAIN
tristate "Future Domain PCMCIA support"
help
Say Y here if you intend to attach this type of PCMCIA SCSI host
adapter to your computer.
To compile this driver as a module, choose M here: the
module will be called fdomain_cs.
config PCMCIA_NINJA_SCSI
tristate "NinjaSCSI-3 / NinjaSCSI-32Bi (16bit) PCMCIA support"
depends on !64BIT
help
If you intend to attach this type of PCMCIA SCSI host adapter to
your computer, say Y here and read
<file:Documentation/scsi/NinjaSCSI.txt>.
Supported cards:
NinjaSCSI-3: (version string: "WBT","NinjaSCSI-3","R1.0")
IO-DATA PCSC-FP
ALPHA DATA AD-PCS201
CyQ've SFC-201
LOGITECH LPM-SCSI2E
Pioneer PCR-PR24's card
I-O DATA CDPS-PX24's card (PCSC-F)
Panasonic KXL-RW10AN CD-RW's card
etc.
NinjaSCSI-32Bit (in 16bit mode):
[Workbit (version string: "WORKBIT","UltraNinja-16","1")]
Jazz SCP050
[I-O DATA (OEM) (version string: "IO DATA","CBSC16 ","1")]
I-O DATA CBSC-II
[Kyusyu Matsushita Kotobuki (OEM)
(version string: "KME ","SCSI-CARD-001","1")]
KME KXL-820AN's card
HP M820e CDRW's card
etc.
To compile this driver as a module, choose M here: the
module will be called nsp_cs.
config PCMCIA_QLOGIC
tristate "Qlogic PCMCIA support"
help
Say Y here if you intend to attach this type of PCMCIA SCSI host
adapter to your computer.
To compile this driver as a module, choose M here: the
module will be called qlogic_cs.
config PCMCIA_SYM53C500
tristate "Symbios 53c500 PCMCIA support"
help
Say Y here if you have a New Media Bus Toaster or other PCMCIA
SCSI adapter based on the Symbios 53c500 controller.
To compile this driver as a module, choose M here: the
module will be called sym53c500_cs.
endif # SCSI_LOWLEVEL_PCMCIA
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