Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
311f71281f
locking. Requires some list_bl interface improvements. - Add ability for DM integrity to use a bitmap mode, that tracks regions where data and metadata are out of sync, instead of using a journal. - Improve DM thin provisioning target to not write metadata changes to disk if the thin-pool and associated thin devices are merely activated but not used. This avoids metadata corruption due to concurrent activation of thin devices across different OS instances (e.g. split brain scenarios, which ultimately would be avoided if proper device filters were used -- but not having proper filtering has proven a very common configuration mistake) - Fix missing call to path selector type->end_io in DM multipath. This fixes reported performance problems due to inaccurate path selector IO accounting causing an imbalance of IO (e.g. avoiding issuing IO to particular path due to it seemingly being heavily used). - Fix bug in DM cache metadata's loading of its discard bitset that could lead to all cache blocks being discarded if the very first cache block was discarded (thankfully in practice the first cache block is generally in use; be it FS superblock, partition table, disk label, etc). - Add testing-only DM dust target which simulates a device that has failing sectors and/or read failures. - Fix a DM init error path reference count hang that caused boot hangs if user supplied malformed input on kernel commandline. - Fix a couple issues with DM crypt target's logging being overly verbose or lacking context. - Various other small fixes to DM init, DM multipath, DM zoned, and DM crypt. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEJfWUX4UqZ4x1O2wixSPxCi2dA1oFAlzdcCgTHHNuaXR6ZXJA cmVkaGF0LmNvbQAKCRDFI/EKLZ0DWsxZB/9idHl8LmwwL1JzBfi/XX7bWxwqDQLo j1b3ycQ14AKVau4VCkmgDuRIfMDuU6PIAVvsMeVbF3aCE0fZ7zbEV1qHefbtJuCL MMm//KbrhIT8oMKYUWtlOj7XI9MT6ErFzfActBZ6UF6r21m1N3bohhVGN7kvCnJm wgmSlnz/m2GLKK8gQx+OisnAh0nlje3PIdIYPu7uWN6t0FF2XRz3UwWTuyw7lYhC Rx2J+sOIL02CtadhHKLMCG8OutRXWP01cBSohUVJIMGihWfbe6aqvhG5afbqb4bG UQrXl477ry5zyQ4fAU2JKZ+8qFvc1FoLLknKrZQu+uYPRokUPw/AwiL7 =mOH3 -----END PGP SIGNATURE----- Merge tag 'for-5.2/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - Improve DM snapshot target's scalability by using finer grained locking. Requires some list_bl interface improvements. - Add ability for DM integrity to use a bitmap mode, that tracks regions where data and metadata are out of sync, instead of using a journal. - Improve DM thin provisioning target to not write metadata changes to disk if the thin-pool and associated thin devices are merely activated but not used. This avoids metadata corruption due to concurrent activation of thin devices across different OS instances (e.g. split brain scenarios, which ultimately would be avoided if proper device filters were used -- but not having proper filtering has proven a very common configuration mistake) - Fix missing call to path selector type->end_io in DM multipath. This fixes reported performance problems due to inaccurate path selector IO accounting causing an imbalance of IO (e.g. avoiding issuing IO to particular path due to it seemingly being heavily used). - Fix bug in DM cache metadata's loading of its discard bitset that could lead to all cache blocks being discarded if the very first cache block was discarded (thankfully in practice the first cache block is generally in use; be it FS superblock, partition table, disk label, etc). - Add testing-only DM dust target which simulates a device that has failing sectors and/or read failures. - Fix a DM init error path reference count hang that caused boot hangs if user supplied malformed input on kernel commandline. - Fix a couple issues with DM crypt target's logging being overly verbose or lacking context. - Various other small fixes to DM init, DM multipath, DM zoned, and DM crypt. * tag 'for-5.2/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (42 commits) dm: fix a couple brace coding style issues dm crypt: print device name in integrity error message dm crypt: move detailed message into debug level dm ioctl: fix hang in early create error condition dm integrity: whitespace, coding style and dead code cleanup dm integrity: implement synchronous mode for reboot handling dm integrity: handle machine reboot in bitmap mode dm integrity: add a bitmap mode dm integrity: introduce a function add_new_range_and_wait() dm integrity: allow large ranges to be described dm ingerity: pass size to dm_integrity_alloc_page_list() dm integrity: introduce rw_journal_sectors() dm integrity: update documentation dm integrity: don't report unused options dm integrity: don't check null pointer before kvfree and vfree dm integrity: correctly calculate the size of metadata area dm dust: Make dm_dust_init and dm_dust_exit static dm dust: remove redundant unsigned comparison to less than zero dm mpath: always free attached_handler_name in parse_path() dm init: fix max devices/targets checks ... |
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| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.