mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-06 03:45:24 -04:00
| Filename | Latest commit message | Latest commit date |
|---|---|---|
2e6023850e
discard_zeroes_cow - a discard issued to the snapshot device that maps to entire chunks to will zero the corresponding exception(s) in the snapshot's exception store. discard_passdown_origin - a discard to the snapshot device is passed down to the snapshot-origin's underlying device. This doesn't cause copy-out to the snapshot exception store because the snapshot-origin target is bypassed. The discard_passdown_origin feature depends on the discard_zeroes_cow feature being enabled. When these 2 features are enabled they allow a temporarily read-only device that has completely exhausted its free space to recover space. To do so dm-snapshot provides temporary buffer to accommodate writes that the temporarily read-only device cannot handle yet. Once the upper layer frees space (e.g. fstrim to XFS) the discards issued to the dm-snapshot target will be issued to underlying read-only device whose free space was exhausted. In addition those discards will also cause zeroes to be written to the snapshot exception store if corresponding exceptions exist. If the underlying origin device provides deduplication for zero blocks then if/when the snapshot is merged backed to the origin those blocks will become unused. Once the origin has gained adequate space, merging the snapshot back to the thinly provisioned device will permit continued use of that device without the temporary space provided by the snapshot. Requested-by: John Dorminy <jdorminy@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> |
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| .. | ||
| ABI | ||
| accelerators | ||
| accounting | ||
| acpi/dsd | ||
| admin-guide | ||
| aoe | ||
| arm | ||
| arm64 | ||
| auxdisplay | ||
| backlight | ||
| block | ||
| blockdev | ||
| bpf | ||
| bus-devices | ||
| cdrom | ||
| cgroup-v1 | ||
| cma | ||
| connector | ||
| console | ||
| core-api | ||
| cpu-freq | ||
| crypto | ||
| dev-tools | ||
| device-mapper | ||
| devicetree | ||
| doc-guide | ||
| driver-api | ||
| driver-model | ||
| early-userspace | ||
| EDID | ||
| extcon | ||
| fault-injection | ||
| fb | ||
| features | ||
| filesystems | ||
| firmware-guide | ||
| firmware_class | ||
| fmc | ||
| fpga | ||
| gpio | ||
| gpu | ||
| hid | ||
| hwmon | ||
| i2c | ||
| ia64 | ||
| ide | ||
| iio | ||
| infiniband | ||
| input | ||
| interconnect | ||
| ioctl | ||
| isdn | ||
| kbuild | ||
| kdump | ||
| kernel-hacking | ||
| laptops | ||
| leds | ||
| lightnvm | ||
| livepatch | ||
| locking | ||
| m68k | ||
| maintainer | ||
| md | ||
| media | ||
| memory-devices | ||
| mic | ||
| mips | ||
| misc-devices | ||
| mmc | ||
| mtd | ||
| namespaces | ||
| netlabel | ||
| networking | ||
| nfc | ||
| nios2 | ||
| nvdimm | ||
| nvmem | ||
| openrisc | ||
| parisc | ||
| PCI | ||
| pcmcia | ||
| perf | ||
| phy | ||
| platform | ||
| power | ||
| powerpc | ||
| pps | ||
| process | ||
| pti | ||
| ptp | ||
| rapidio | ||
| RCU | ||
| riscv | ||
| s390 | ||
| scheduler | ||
| scsi | ||
| security | ||
| serial | ||
| sh | ||
| sound | ||
| sparc | ||
| sphinx | ||
| sphinx-static | ||
| spi | ||
| sysctl | ||
| target | ||
| thermal | ||
| timers | ||
| trace | ||
| translations | ||
| usb | ||
| userspace-api | ||
| virtual | ||
| vm | ||
| w1 | ||
| watchdog | ||
| wimax | ||
| x86 | ||
| xilinx | ||
| xtensa | ||
| .gitignore | ||
| atomic_bitops.txt | ||
| atomic_t.txt | ||
| bt8xxgpio.txt | ||
| btmrvl.txt | ||
| bus-virt-phys-mapping.txt | ||
| Changes | ||
| clearing-warn-once.txt | ||
| CodingStyle | ||
| conf.py | ||
| cpu-load.txt | ||
| cputopology.txt | ||
| crc32.txt | ||
| dcdbas.txt | ||
| debugging-modules.txt | ||
| debugging-via-ohci1394.txt | ||
| dell_rbu.txt | ||
| digsig.txt | ||
| DMA-API-HOWTO.txt | ||
| DMA-API.txt | ||
| DMA-attributes.txt | ||
| DMA-ISA-LPC.txt | ||
| docutils.conf | ||
| dontdiff | ||
| efi-stub.txt | ||
| eisa.txt | ||
| futex-requeue-pi.txt | ||
| gcc-plugins.txt | ||
| highuid.txt | ||
| hw_random.txt | ||
| hwspinlock.txt | ||
| index.rst | ||
| Intel-IOMMU.txt | ||
| intel_txt.txt | ||
| io-mapping.txt | ||
| io_ordering.txt | ||
| iostats.txt | ||
| IPMI.txt | ||
| IRQ-affinity.txt | ||
| IRQ-domain.txt | ||
| IRQ.txt | ||
| irqflags-tracing.txt | ||
| isa.txt | ||
| isapnp.txt | ||
| kernel-per-CPU-kthreads.txt | ||
| kobject.txt | ||
| kprobes.txt | ||
| kref.txt | ||
| ldm.txt | ||
| lockup-watchdogs.txt | ||
| logo.gif | ||
| logo.txt | ||
| lsm.txt | ||
| lzo.txt | ||
| mailbox.txt | ||
| Makefile | ||
| memory-barriers.txt | ||
| men-chameleon-bus.txt | ||
| nommu-mmap.txt | ||
| ntb.txt | ||
| numastat.txt | ||
| packing.txt | ||
| padata.txt | ||
| parport-lowlevel.txt | ||
| percpu-rw-semaphore.txt | ||
| phy.txt | ||
| pi-futex.txt | ||
| pnp.txt | ||
| preempt-locking.txt | ||
| pwm.txt | ||
| rbtree.txt | ||
| remoteproc.txt | ||
| rfkill.txt | ||
| robust-futex-ABI.txt | ||
| robust-futexes.txt | ||
| rpmsg.txt | ||
| rtc.txt | ||
| SAK.txt | ||
| sgi-ioc4.txt | ||
| siphash.txt | ||
| SM501.txt | ||
| smsc_ece1099.txt | ||
| speculation.txt | ||
| static-keys.txt | ||
| SubmittingPatches | ||
| svga.txt | ||
| switchtec.txt | ||
| sync_file.txt | ||
| tee.txt | ||
| this_cpu_ops.txt | ||
| unaligned-memory-access.txt | ||
| vfio-mediated-device.txt | ||
| vfio.txt | ||
| video-output.txt | ||
| xillybus.txt | ||
| xz.txt | ||
| zorro.txt | ||
