Die kleinen Perlen

Einige weitere für Sie vielleicht interessante Neuerungen liefert die folgenden Liste mit den englischen Commit-Überschriften ausgewählter Änderungen, die es in den beschriebenen Kernel-Subsystemen gab. Wie viele Verweise im vorangegangenen Text verlinken die Einträge auf das Webfrontend des von Linus Torvalds gepflegten Git-Zweigs auf Kernel.org. Der über diese Links angezeigte Commit-Kommentar und der darunter ausgegebene Patch liefern oft zahlreiche Hintergrundinformationen zur jeweiligen Änderung.

File systems

Btrfs

• [     ] Btrfs: add support for device replace ioctls
• [    1] Btrfs: change core code of btrfs to support the device replace operations
• [     ] Btrfs: changes to live filesystem are also written to replacement disk
• [     ] Btrfs: disallow mutually exclusive admin operations from user mode
• [     ] Btrfs: enhance btrfs structures for device replace support
• [    1] Btrfs: improve the noflush reservation
• [     ] Btrfs: increase BTRFS_MAX_MIRRORS by one for dev replace
• [     ] Btrfs: introduce a btrfs_dev_replace_item type
• [    2] Btrfs: log changed inodes based on the extent map tree
• [    1] Btrfs: make the scrub page array dynamically allocated
• [     ] btrfs: Notify udev when removing device
• [    4] Btrfs: rename the scrub context structure

Ext family

• [   N ] ext4: add data structures for the extent status tree
• [    1] ext4: add delalloc support for inline data
• [     ] ext4: add journalled write support for inline data
• [    1] ext4: add normal write support for inline data
• [   N1] ext4: add operations on extent status tree
• [     ] ext4: add read support for inline data
• [     ] ext4: add some tracepoints in extent status tree
• [     ] ext4: enable ext4 inline support
• [     ] ext4: notify when discard is not supported
• [C D 1] ext4: Remove CONFIG_EXT4_FS_XATTR

Various

• [     ] Add SMB2.02 dialect support
• [     ] adfs: drop vmtruncate
• [     ] affs: drop vmtruncate
• [     ] bfs: drop vmtruncate
• [     ] ceph: Fix __ceph_do_pending_vmtruncate
• [     ] cifs: don't override the uid/gid in getattr when cifsacl is enabled
• [  D  ] docs: add documentation about /proc/<pid>/fdinfo/<fd> output
• [  D  ] docs: update documentation about /proc/<pid>/fdinfo/<fd> fanotify output
• [  D  ] documentation: drop vmtruncate
• [     ] efi_pstore: Add a format check for an existing variable name at erasing time
• [     ] efi_pstore: Add a format check for an existing variable name at reading time
• [    1] efi_pstore: Add a sequence counter to a variable name
• [  DN2] f2fs: add document
• [     ] f2fs: add MAINTAINERS entry
• [  D  ] f2fs: fix a typo in f2fs documentation
• [C    ] f2fs: resolve build failures
• [C  N ] f2fs: update Kconfig and Makefile
• [  D  ] f2fs: update the f2fs document
• [     ] fat: notify when discard is not supported
• [  D  ] fat: provide option for setting timezone offset
• [  D 2] FS-Cache: Fix operation state management and accounting
• [  D 2] FS-Cache: Provide proper invalidation
• [C    ] fs/dlm: remove CONFIG_EXPERIMENTAL
• [     ] fs, epoll: add procfs fdinfo helper
• [     ] fs, eventfd: add procfs fdinfo helper
• [     ] fs, fanotify: add @mflags field to fanotify output
• [   N ] fs, notify: add procfs fdinfo helper
• [     ] GFS2: Add Orlov allocator
• [     ] hfs: drop vmtruncate
• [     ] hfsplus: drop vmtruncate
• [     ] hpfs: drop vmtruncate
• [     ] jfs: drop vmtruncate
• [     ] kcmp selftests: make run_tests fix
• [     ] kcmp selftests: print fail status instead of cause make error
• [     ] libceph: remove 'osdtimeout' option
• [     ] logfs: drop vmtruncate
• [    3] lseek: the "whence" argument is called "whence"
• [     ] minix: drop vmtruncate
• [     ] mm: drop vmtruncate
• [     ] ncpfs: drop vmtruncate
• [  D  ] nfsd4: delay filling in write iovec array till after xdr decoding
• [  D  ] nfsd4: implement backchannel_ctl operation
• [  D  ] nfsd4: update documentation on 4.1 progress
• [     ] nfsd: add a usermodehelper upcall for NFSv4 client ID tracking
• [     ] nfsd: pass info about the legacy recoverydir in environment variables
• [     ] nfsd: per-net NFSd up flag introduced
• [     ] NFSv4.1: Set the maximum slot table size to 1024 slots
• [     ] NFSv4.1: Support dynamic resizing of the session slot table
• [     ] nilfs2: drop vmtruncate
• [     ] ntfs: drop vmtruncate
• [     ] ocfs2: drop vmtruncate
• [     ] omfs: drop vmtruncate
• [     ] proc: don't show nonexistent capabilities
• [     ] procfs: add ability to plug in auxiliary fdinfo providers
• [  D  ] procfs: add VmFlags field in smaps output
• [     ] procfs: drop vmtruncate
• [  D  ] /proc/pid/status: add "Seccomp" field
• [     ] proc: pid/status: show all supplementary groups
• [    1] proc: Usable inode numbers for the namespace file descriptors.
• [     ] rbd: activate v2 image support
• [     ] reiserfs: drop vmtruncate
• [     ] SMB3 mounts fail with access denied to some servers
• [     ] sysv: drop vmtruncate
• [     ] tmpfs mempolicy: fix /proc/mounts corrupting memory
• [     ] tools/testing/selftests/kcmp/kcmp_test.c: print reason for failure in kcmp_test
• [     ] ufs: drop vmtruncate
• [     ] vfs: Add setns support for the mount namespace
• [     ] vfs: drop vmtruncate
• [     ] xfs: add background scanning to clear eofblocks inodes
• [    1] xfs: add CRC checks to the log
• [C  N ] xfs: add CRC infrastructure
• [     ] xfs: add EOFBLOCKS inode tagging/untagging
• [    1] xfs: add more attribute tree trace points.
• [    2] xfs: add pre-write metadata buffer verifier callbacks
• [    2] xfs: add verifier callback to directory read code
• [    1] xfs: add xfs_da_node verification
• [     ] xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl
• [    5] xfs: convert buffer verifiers to an ops structure.
• [  D  ] xfs: Remove the description of nodelaylog mount option from xfs.txt
• [     ] xfs: syncd workqueue is no more
• [  D  ] xfs: Update mount options documentation
• [    1] xfs: verify btree blocks as they are read from disk

Storage:

• [     ] ahci_platform: enable hotplug unbinding
• [     ] aoe: allow comma separator in aoe_iflist value
• [  D  ] aoe: allow user to disable target failure timeout
• [    1] aoe: improve handling of misbehaving network paths
• [     ] aoe: support larger I/O requests via aoe_maxsectors module param
• [     ] ata_piix: reenable MS Virtual PC guests
• [     ] dm: add WRITE SAME support
• [     ] dm: disable WRITE SAME
• [     ] dm kcopyd: add WRITE SAME support to dm_kcopyd_zero
• [     ] dm linear: add WRITE SAME support
• [     ] dm: prepare to support WRITE SAME
• [     ] dm snapshot: optimize track_chunk
• [     ] dm stripe: add WRITE SAME support
• [    1] drbd: introduce in-kernel "down" command
• [    6] drbd: switch configuration interface from connector to genetlink
• [C    ] drbd: update Kconfig to match current dependencies
• [     ] md/raid5: add blktrace calls
• [C DN2] mmc: SD/MMC Host Controller for Wondermedia WM8505/WM8650
• [C    ] partitions: enable EFI/GPT support by default
• [  D  ] rbd: get parent spec for version 2 images
• [ I   ] SCSI: be2iscsi: Fix driver support for Skyhawk-R adapter.
• [CI N9] SCSI: csiostor: Chelsio FCoE offload driver
• [     ] SCSI: qla2xxx: Add 16Gb/s case to get port speed capability.
• [     ] SCSI: qla2xxx: Add Gen3 PCIe speed 8GT/s to the log message.
• [     ] target: Add emulation for MODE SELECT
• [     ] target/iblock: Add WRITE_SAME w/ UNMAP=0 emulation support
• [    1] wait: add wait_event_lock_irq() interface

Ein "C" im Bereich "[  ]" kennzeichnet Commits mit Änderungen an Kconfig-Dateien, welche die Konfigurationsoptionen samt der zugehörigen Hilfetexte enthalten. Mit "I" ausgezeichnete Patches rüsten neue PCI- oder USB-IDs nach; jene mit "D" verändern die dem Kernel beiliegende Dokumentation; Commits mit "N" legen neue Dateien an. Die Zahl vermittelt einen groben Eindruck zur Größe des Patches: Eine "1" kennzeichnet Patches, die inklusive Kommentar zwischen 10 und 20 KByte groß sind; Patches mit einer "9" sind 90 KByte oder größer.

Weitere Hintergründe und Informationen rund um Entwicklungen im Linux-Kernel und dessen Umfeld finden sich in den vorangegangenen Kernel-Logs auf heise open. Neue Ausgaben des Kernel-Logs werden auf den Identi.ca- und Twitter-Konten "@kernellog" erwähnt; die englischen, bei den Kollegen von "The H" erscheinenden Übersetzungen auf den Identi.ca- und Twitter-Konten "@kernellog2". Gelegentlich zwitschert der Autor des Kernel-Logs unabhängig davon über einige Kernel-Log-Themen bei Identi.ca und Twitter als "@kernellogauthor". (thl)