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OpenCloudOS-Kernel/arch/powerpc/sysdev
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Christoph Hellwig 4246a0b63b block: add a bi_error field to struct bio 
Currently we have two different ways to signal an I/O error on a BIO:

 (1) by clearing the BIO_UPTODATE flag
 (2) by returning a Linux errno value to the bi_end_io callback

The first one has the drawback of only communicating a single possible
error (-EIO), and the second one has the drawback of not beeing persistent
when bios are queued up, and are not passed along from child to parent
bio in the ever more popular chaining scenario.  Having both mechanisms
available has the additional drawback of utterly confusing driver authors
and introducing bugs where various I/O submitters only deal with one of
them, and the others have to add boilerplate code to deal with both kinds
of error returns.

So add a new bi_error field to store an errno value directly in struct
bio and remove the existing mechanisms to clean all this up.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
 		2015-07-29 08:55:15 -06:00
..
ge powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
qe_lib powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
xics powerpc: Make doorbell check preemption safe 2015-06-17 08:01:03 +10:00
6xx-suspend.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
Kconfig powerpc: Added PCI MSI support using the HSTA module 2014-05-01 08:26:30 +10:00
Makefile powerpc/pasemi: Only the build the pasemi MSI code for PASEMI=y 2015-05-11 19:55:25 +10:00
axonram.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
cpm1.c powerpc: Mark low level irq handlers NO_THREAD 2013-06-20 16:55:08 +10:00
cpm2.c powerpc/fsl-cpm: Configure clock correctly for SCC 2010-04-19 23:13:03 -05:00
cpm2_pic.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
cpm2_pic.h powerpc/cpm2: Checkpatch cleanup 2010-03-04 10:43:58 -06:00
cpm_common.c powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
dart.h
…
dart_iommu.c powerpc/iommu: Move tce_xxx callbacks from ppc_md to iommu_table 2015-06-11 15:14:56 +10:00
dcr-low.S powerpc/4xx: Extended DCR support v2 2008-12-21 14:21:15 +11:00
dcr.c powerpc: Use bool function return values of true/false not 1/0 2015-03-31 14:19:47 +11:00
ehv_pic.c powerpc:eVh_pic: Kill irq_desc abuse 2014-03-04 17:37:51 +01:00
fsl_85xx_cache_ctlr.h powerpc/85xx: Fix sram_offset parameter type 2012-07-26 13:24:32 -05:00
fsl_85xx_cache_sram.c powerpc/85xx: Fix compiler error with THIS_MODULE and related 2012-03-16 14:50:25 -05:00
fsl_85xx_l2ctlr.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
fsl_gtm.c Merge remote-tracking branch 'grant/devicetree/next' into for-next 2013-11-07 10:34:46 -06:00
fsl_lbc.c powerpc: use subsys_initcall for Freescale Local Bus 2015-06-16 14:12:34 -04:00
fsl_mpic_err.c powerpc/mpic: FSL MPIC error interrupt support. 2012-09-12 14:57:10 -05:00
fsl_mpic_timer_wakeup.c powerpc/fsl: add MPIC timer wakeup support 2013-07-01 18:38:42 -05:00
fsl_msi.c powerpc/fsl_msi: Move MSI-related ops to pci_controller_ops 2015-06-02 11:47:42 +10:00
fsl_msi.h powerpc/85xx: workaround for chips with MSI hardware errata 2015-03-23 19:51:18 -05:00
fsl_pci.c powerpc: fsl_pci, swiotlb: Move controller ops from ppc_md to controller_ops 2015-04-11 20:49:17 +10:00
fsl_pci.h fsl/pci: The new pci suspend/resume implementation 2014-03-19 22:37:44 -05:00
fsl_pmc.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
fsl_rio.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
fsl_rio.h powerpc/fsl-rio: add support for mapping inbound windows 2014-11-12 23:56:16 -06:00
fsl_rmu.c powerpc/rmu: Fix the error memory free parameters 2014-05-22 18:08:13 -05:00
fsl_soc.c powerpc/fsl: fsl_soc: delete unneeded test before of_node_put 2014-11-10 09:59:34 +11:00
fsl_soc.h powerpc/mpc512x: remove unnecessary #if 2013-10-30 22:56:10 +01:00
grackle.c powerpc: rename ppc_pci_*_flags to pci_*_flags 2011-07-12 09:28:04 -05:00
i8259.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
indirect_pci.c powerpc/fsl_pci: Fix pci stack build bug with FRAME_WARN 2015-01-29 19:56:15 -06:00
ipic.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
ipic.h irq_domain/powerpc: Use common irq_domain structure instead of irq_host 2012-02-14 14:06:50 -07:00
micropatch.c powerpc/8xx: Remove empty asm/mpc8xx.h 2014-06-25 18:49:40 -05:00
mmio_nvram.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
mpc5xxx_clocks.c powerpc/mpc5xxx: delete unneeded test before of_node_put 2014-11-10 09:59:34 +11:00
mpc8xx_pic.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
mpc8xx_pic.h
…
mpic.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
mpic.h powerpc/pasemi: Only the build the pasemi MSI code for PASEMI=y 2015-05-11 19:55:25 +10:00
mpic_msgr.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
mpic_msi.c of/irq: Replace of_irq with of_phandle_args 2013-10-24 11:42:51 +01:00
mpic_timer.c powerpc/mpic_timer: fix convert ticks to time subtraction overflow 2014-01-09 17:52:14 -06:00
mpic_u3msi.c powerpc/mpic_u3msi: Move MSI-related ops to pci_controller_ops 2015-06-02 11:47:44 +10:00
msi_bitmap.c powerpc/msi: Use WARN_ON() in msi bitmap selftests 2014-10-15 13:09:33 +11:00
mv64x60.h
…
mv64x60_dev.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00
mv64x60_pci.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mv64x60_pic.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
mv64x60_udbg.c dt/bindings: Remove device_type "serial" from marvell,mv64360-mpsc 2014-01-16 16:31:31 +00:00
of_rtc.c powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
pmi.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
ppc4xx_cpm.c powerpc/4xx/cpm: delete unneeded test before of_node_put 2014-11-10 09:59:34 +11:00
ppc4xx_gpio.c of/gpio: add default of_xlate function if device has a node pointer 2010-07-05 16:14:30 -06:00
ppc4xx_hsta_msi.c powerpc/ppc4xx_hsta_msi: Include ppc-pci.h to fix reference to hose_list 2015-07-06 20:24:36 +10:00
ppc4xx_msi.c powerpc/ppc4xx_msi: Move MSI-related ops to pci_controller_ops 2015-06-02 11:47:42 +10:00
ppc4xx_ocm.c powerpc/44x: Fix ocm_block allocation 2013-12-10 11:25:04 +11:00
ppc4xx_pci.c powerpc: Remove superfluous bootmem includes 2014-11-10 09:59:26 +11:00
ppc4xx_pci.h powerpc/476fpe: Add 476fpe SoC code 2011-12-09 07:51:02 -05:00
ppc4xx_soc.c powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
rtc_cmos_setup.c PTR_RET is now PTR_ERR_OR_ZERO(): Replace most. 2013-07-15 11:25:01 +09:30
scom.c powerpc/scom: Improve debugfs interface 2013-11-06 14:13:50 +11:00
simple_gpio.c powerpc: remove non-required uses of include <linux/module.h> 2011-10-31 19:30:44 -04:00
simple_gpio.h powerpc: Implement GPIO driver for simple memory-mapped banks 2008-12-30 11:13:45 -06:00
tsi108_dev.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
tsi108_pci.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
udbg_memcons.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
uic.c powerpc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 2015-06-02 16:54:44 +10:00
xilinx_intc.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
xilinx_pci.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00