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* ARM: shmobile: lager: Add DU external pixel clocks to DTLaurent Pinchart2015-02-26
| | | | | | | | Declare the fixed 148.5MHz pixel clocks connected to the DU clock inputs. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: koelsch: Add DU external pixel clocks to DTLaurent Pinchart2015-02-26
| | | | | | | | Declare the fixed 148.5MHz pixel clocks connected to the DU clock inputs. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: marzen: Add DU external pixel clock to DTLaurent Pinchart2015-02-26
| | | | | | | Declare the fixed 65MHz pixel clock connected to the DU clock input. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: ape6evm dts: Fix polarity of LEDsGeert Uytterhoeven2015-02-26
| | | | | | | | While the LEDs on r8a73a4/ape6evm are tied to VSUPPLY, they're driven by an N-channel MOSFET. Hence the GPIO signal should be active high. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: lager: Add DU HDMI output supportLaurent Pinchart2015-02-25
| | | | | | | Add DT nodes for the ADV7511 HDMI encoder and its HDMI output connector. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: Fix HSUSB clock to hp_clk from mp_clkKazuya Mizuguchi2015-02-25
| | | | | | | | | HSUSB uses hp_clk rather than mp_clk for H/W register access. Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> [horms: updated changelog] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: Fix HSUSB clock to hp_clk from mp_clkKazuya Mizuguchi2015-02-25
| | | | | | | | | HSUSB uses hp_clk rather than mp_clk for H/W register access. Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> [horms: updated changelog] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: tidyup SDHI register size on DTSIKuninori Morimoto2015-02-25
| | | | | | | | r8a7791 SDHI ch0/ch1 has SD_DMACR which is located in 0x324. This patch updates register size Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: tidyup SDHI register size on DTSIKuninori Morimoto2015-02-25
| | | | | | | | | r8a7790 SDHI ch0/ch1 has SD_DMACR which is located in 0x324. This patch updates register size Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: Reference DMA channels in SDHI DT nodesLaurent Pinchart2015-02-25
| | | | | | | | | | Add references to the transmit and receive DMA channels in the three SDHI nodes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: Reference DMA channels in SDHI DT nodesLaurent Pinchart2015-02-25
| | | | | | | | | | Add references to the transmit and receive DMA channels in the four SDHI nodes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7794: add SDHI DT supportSergei Shtylyov2015-02-23
| | | | | | | | | | Define the generic R8A7794 parts of the SDHI[012] device nodes. Based on the orginal patch by Shinobu Uehara <shinobu.uehara.xc@renesas.com>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add ADSP clocksSergei Shtylyov2015-02-23
| | | | | | | | | | | Add the ADSP clocks to the CPG and MSTP5 nodes of the R8A7790 device tree. Based on the original patch by Konstantin Kozhevnikov <konstantin.kozhevnikov@cogentembedded.com>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: add ADSP clocksSergei Shtylyov2015-02-23
| | | | | | | | | | | Add the ADSP clocks to the CPG and MSTP5 nodes of the R8A7791 device tree. Based on the original patch by Konstantin Kozhevnikov <konstantin.kozhevnikov@cogentembedded.com>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: henninger: add CAN0 DT supportSergei Shtylyov2015-02-23
| | | | | | | Define the Henninger board dependent part of the CAN0 device node. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: add CAN DT supportSergei Shtylyov2015-02-23
| | | | | | | | Define the generic R8A7791 parts of the CAN0/1 device nodes. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: add CAN clocksSergei Shtylyov2015-02-23
| | | | | | | | | | | The R-Car CAN controllers can derive the CAN bus clock not only from their peripheral clock input (clkp1) but also from the other internal clock (clkp2) and external clock fed on CAN_CLK pin. Describe those clocks in the device tree, along with the USB_EXTAL clock from which clkp2 is derived. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add CAN DT supportSergei Shtylyov2015-02-23
| | | | | | | | Define the generic R8A7790 parts of the CAN0/1 device nodes. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add CAN clocksSergei Shtylyov2015-02-23
| | | | | | | | | | | The R-Car CAN controllers can derive the CAN bus clock not only from their peripheral clock input (clkp1) but also from the other internal clock (clkp2) and external clock fed on CAN_CLK pin. Describe those clocks in the device tree, along with the USB_EXTAL clock from which clkp2 is derived. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: emev2-kzm9d dts: Add PFC information for uart1Niklas Söderlund2015-02-23
| | | | | | | | | | Configure the pinmux on kzm9d to use the serial connector for uart1. Signed-off-by: Niklas Söderlund <niso@kth.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: emev2 dtsi: Add PFC informationNiklas Söderlund2015-02-23
| | | | | | | | | | With this information all GPIOs can make use of the PFC functionality. Signed-off-by: Niklas Söderlund <niso@kth.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: smp: remap whole apmu regionWolfram Sang2015-02-23
| | | | | | | | | Documentation says the last register is at 0x184 (CAxCPUCMCR), so use proper length. Current APMU code accesses CAxCPUnCR which is currently outside of the remapped area. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: smp: remap whole apmu regionWolfram Sang2015-02-23
| | | | | | | | | Documentation says the last register is at 0x184 (CAxCPUCMCR), so use proper length. Current APMU code accesses CAxCPUnCR which is currently outside of the remapped area. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: koelsch: Add DU HDMI output supportLaurent Pinchart2015-02-23
| | | | | | | | | | Add DT nodes for the ADV7511 HDMI encoder and its HDMI output connector and configure the DISP pin group that drives the HDMI transmitter DE pin. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: Correct SDHI clock labels and output-namesSimon Horman2015-02-23
| | | | | | | | | | | There appears to have been some inconsistency and confusion here as on the r8a7790 these clocks are referred to as SD(HI)1 and SD(HI)2 while on the r8a7791 and r8a7794 they are referred to as SD(HI)2 and SD(HI)3. Fixes: 59e79895b95892863 ("ARM: shmobile: r8a7791: Add clocks") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: shmobile: r8a7794: Correct SDHI clock base address, labels and output-namesSimon Horman2015-02-23
| | | | | | | | | | | | | | | | * Correct base address of SD3 div6 clk. * Update div6 clock node labels There appears to have been some inconsistency and confusion here as on the r8a7790 these clocks are referred to as SD(HI)1 and SD(HI)2 while on the r8a7791 and r8a7794 they are referred to as SD(HI)2 and SD(HI)3. This has no run-time affect as the clock nodes are not currently used. Fixes: 8e181633e6ca96049 ("ARM: shmobile: r8a7794: Add SDHI clocks to device tree") Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: shmobile: r8a7794: alt: Enable ethernet controllerLaurent Pinchart2015-02-23
| | | | | | | | | | Enable the ethernet controller for the Alt board. Pin muxing entries are currently left out as r8a7794 pin control support isn't available yet. We thus rely on the boot loader to configure ethernet pins for now. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7794: Add ethernet controller to device treeLaurent Pinchart2015-02-23
| | | | | | | | Add a DT node for the on-SoC ethernet controller device. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7794: Add IPMMU DT nodesLaurent Pinchart2015-02-23
| | | | | | | | Add the six IPMMU instances found in the r8a7794 to DT with a disabled status. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7791: Add IPMMU DT nodesLaurent Pinchart2015-02-23
| | | | | | | | | Add the seven IPMMU instances found in the r8a7791 to DT with a disabled status. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: Add IPMMU DT nodesLaurent Pinchart2015-02-23
| | | | | | | | | Add the six IPMMU instances found in the r8a7790 to DT with a disabled status. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7794: Add DMAC devices to DTLaurent Pinchart2015-02-23
| | | | | | | Instantiate the two system DMA controllers in the r8a7794 device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Declare the full 512 MiB of RAMGeert Uytterhoeven2015-02-23
| | | | | | | | | | | | | | | | | | Traditionally, the first 16 MiB of RAM was reserved for the RT processor. However, this is incompatible with CONFIG_AUTO_ZRELADDR=y, which requires that the start address of physical memory is a multiple of 128 MiB. As CONFIG_AUTO_ZRELADDR=y is enabled for multi-platform kernels, declare RAM to start at 0x40000000. While at it, reclaim the last 8 MiB of RAM, too, so the full 512 MiB is available. Note that kzm9g_defconfig still has CONFIG_MEMORY_START=0x41000000 and CONFIG_MEMORY_SIZE=0x1f000000, so before the advent of DT we scribbled over the last 8 MiB, too. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g dts: Declare the full 512 MiB of RAMGeert Uytterhoeven2015-02-23
| | | | | | | | | | | | | | | | | | Traditionally, the first 16 MiB of RAM was reserved for the RT processor. However, this is incompatible with CONFIG_AUTO_ZRELADDR=y, which requires that the start address of physical memory is a multiple of 128 MiB. As CONFIG_AUTO_ZRELADDR=y is enabled for multi-platform kernels, declare RAM to start at 0x40000000. While at it, reclaim the last 8 MiB of RAM, too, so the full 512 MiB is available. Note that kzm9g_defconfig still has CONFIG_MEMORY_START=0x41000000 and CONFIG_MEMORY_SIZE=0x1f000000, so before the advent of DT we scribbled over the last 8 MiB, too. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: sh73a0 dtsi: Add selectable sources to DIV6 clocksUlrich Hecht2015-02-23
| | | | | | | | | Specifies clock sources and register bits. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> [geert: Drop renesas,src-shift/renesas,src-width, pad to 4 or 8 parents] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: sh73a0 dtsi: Add missing INTCA0 clock for irqpin moduleGeert Uytterhoeven2015-02-23
| | | | | | | | | | This clock drives the irqpin controller modules. Before, it was assumed enabled by the bootloader or reset state. By making it available to the driver, we make sure it gets enabled when needed, and allow it to be managed by system or runtime PM. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Add st1232 touchscreen nodeLaurent Pinchart2015-02-23
| | | | | | | | Enable the kzm9g touchscreen controller in the board's DT file. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Add r2025sd rtc nodeGeert Uytterhoeven2015-02-23
| | | | | | | | Add a DT node for the R2025D real-time clock, which is connected to i2c0. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Add adxl345 accelerometer nodeGeert Uytterhoeven2015-02-23
| | | | | | | | | | | | | | | | | | | | Add a DT node for the ADXL345 three-axis digital accelerometer sensor, which is connected to i2c0. As trivial i2c devices are matched against the first compatible entry only, compatibility is declared with "adi,adxl34x" only for now. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> The device needs an interrupt to operate properly. Specify the two interrupts used on the board. While at it rename the DT node to accelerometer@1d to describe the device's function instead of its model. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Add ak8975 magnetometer nodeGeert Uytterhoeven2015-02-23
| | | | | | | | | | | | | | | | Add a DT node for the AK8975 magnetometer sensor, which is connected to i2c0. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Specify the device interrupt to avoid polling for end of conversion. While at it rename the DT node to compass@c to describe the device's function instead of its model. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g-reference dts: Sort i2c0 children by unit addressGeert Uytterhoeven2015-02-23
| | | | | | | | | While at it rename the ak4648 node to "codec" to describe the device's function instead of its model, and move its device-specific property after its generic properties. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: sh73a0 dtsi: Set control-parent for all irqpin nodesLaurent Pinchart2015-02-23
| | | | | | | | | | The sh73a0 INTC can't mask interrupts properly most likely due to a hardware bug. Set the control-parent property to delegate masking to the parent interrupt controller. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7740 dtsi: add remaining DIV6 clocksUlrich Hecht2015-02-23
| | | | | | | | | This adds the remaining DIV6 clocks and all possible parents for the SUB clock. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* Linux 4.0-rc1Linus Torvalds2015-02-22
| | | | | | | | | | | | | | | | | | | | | .. after extensive statistical analysis of my G+ polling, I've come to the inescapable conclusion that internet polls are bad. Big surprise. But "Hurr durr I'ma sheep" trounced "I like online polls" by a 62-to-38% margin, in a poll that people weren't even supposed to participate in. Who can argue with solid numbers like that? 5,796 votes from people who can't even follow the most basic directions? In contrast, "v4.0" beat out "v3.20" by a slimmer margin of 56-to-44%, but with a total of 29,110 votes right now. Now, arguably, that vote spread is only about 3,200 votes, which is less than the almost six thousand votes that the "please ignore" poll got, so it could be considered noise. But hey, I asked, so I'll honor the votes.
* Merge tag 'ext4_for_linus' of ↵Linus Torvalds2015-02-22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 fixes from Ted Ts'o: "Ext4 bug fixes. We also reserved code points for encryption and read-only images (for which the implementation is mostly just the reserved code point for a read-only feature :-)" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix indirect punch hole corruption ext4: ignore journal checksum on remount; don't fail ext4: remove duplicate remount check for JOURNAL_CHECKSUM change ext4: fix mmap data corruption in nodelalloc mode when blocksize < pagesize ext4: support read-only images ext4: change to use setup_timer() instead of init_timer() ext4: reserve codepoints used by the ext4 encryption feature jbd2: complain about descriptor block checksum errors
| * ext4: fix indirect punch hole corruptionOmar Sandoval2015-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4f579ae7de56 (ext4: fix punch hole on files with indirect mapping) rewrote FALLOC_FL_PUNCH_HOLE for ext4 files with indirect mapping. However, there are bugs in several corner cases. This fixes 5 distinct bugs: 1. When there is at least one entire level of indirection between the start and end of the punch range and the end of the punch range is the first block of its level, we can't return early; we have to free the intervening levels. 2. When the end is at a higher level of indirection than the start and ext4_find_shared returns a top branch for the end, we still need to free the rest of the shared branch it returns; we can't decrement partial2. 3. When a punch happens within one level of indirection, we need to converge on an indirect block that contains the start and end. However, because the branches returned from ext4_find_shared do not necessarily start at the same level (e.g., the partial2 chain will be shallower if the last block occurs at the beginning of an indirect group), the walk of the two chains can end up "missing" each other and freeing a bunch of extra blocks in the process. This mismatch can be handled by first making sure that the chains are at the same level, then walking them together until they converge. 4. When the punch happens within one level of indirection and ext4_find_shared returns a top branch for the start, we must free it, but only if the end does not occur within that branch. 5. When the punch happens within one level of indirection and ext4_find_shared returns a top branch for the end, then we shouldn't free the block referenced by the end of the returned chain (this mirrors the different levels case). Signed-off-by: Omar Sandoval <osandov@osandov.com>
| * ext4: ignore journal checksum on remount; don't failEric Sandeen2015-02-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of v3.18, ext4 started rejecting a remount which changes the journal_checksum option. Prior to that, it was simply ignored; the problem here is that if someone has this in their fstab for the root fs, now the box fails to boot properly, because remount of root with the new options will fail, and the box proceeds with a readonly root. I think it is a little nicer behavior to accept the option, but warn that it's being ignored, rather than failing the mount, but that might be a subjective matter... Reported-by: Cónräd <conradsand.arma@gmail.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: remove duplicate remount check for JOURNAL_CHECKSUM changeEric Sandeen2015-02-12
| | | | | | | | | | | | | | | | | | | | rejection of, changing journal_checksum during remount. One suffices. While we're at it, remove old comment about the "check" option which has been deprecated for some time now. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: fix mmap data corruption in nodelalloc mode when blocksize < pagesizeXiaoguang Wang2015-02-12
| | | | | | | | | | | | | | | | | | Since commit 90a8020 and d6320cb, Jan Kara has fixed this issue partially. This mmap data corruption still exists in nodelalloc mode, fix this. Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * ext4: support read-only imagesDarrick J. Wong2015-02-12
| | | | | | | | | | | | | | | | | | Add a rocompat feature, "readonly" to mark a FS image as read-only. The feature prevents the kernel and e2fsprogs from changing the image; the flag can be toggled by tune2fs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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