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a5adcfcad5
users to more easily find the jbd2 journal thread for a particular
ext4 file system.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"A large number of bug fixes and cleanups.
One new feature to allow users to more easily find the jbd2 journal
thread for a particular ext4 file system"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (25 commits)
jbd2: jbd2_get_transaction does not need to return a value
jbd2: fix invalid descriptor block checksum
ext4: fix bigalloc cluster freeing when hole punching under load
ext4: add sysfs attr /sys/fs/ext4/<disk>/journal_task
ext4: Change debugging support help prefix from EXT4 to Ext4
ext4: fix compile error when using BUFFER_TRACE
jbd2: fix compile warning when using JBUFFER_TRACE
ext4: fix some error pointer dereferences
ext4: annotate more implicit fall throughs
ext4: annotate implicit fall throughs
ext4: don't update s_rev_level if not required
jbd2: fold jbd2_superblock_csum_{verify,set} into their callers
jbd2: fix race when writing superblock
ext4: fix crash during online resizing
ext4: disallow files with EXT4_JOURNAL_DATA_FL from EXT4_IOC_SWAP_BOOT
ext4: add mask of ext4 flags to swap
ext4: update quota information while swapping boot loader inode
ext4: cleanup pagecache before swap i_data
ext4: fix check of inode in swap_inode_boot_loader
ext4: unlock unused_pages timely when doing writeback
...
108 lines
3.5 KiB
Plaintext
108 lines
3.5 KiB
Plaintext
# Ext3 configs are here for backward compatibility with old configs which may
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# have EXT3_FS set but not EXT4_FS set and thus would result in non-bootable
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# kernels after the removal of ext3 driver.
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config EXT3_FS
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tristate "The Extended 3 (ext3) filesystem"
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# These must match EXT4_FS selects...
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select EXT4_FS
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select JBD2
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select CRC16
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select CRYPTO
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select CRYPTO_CRC32C
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help
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This config option is here only for backward compatibility. ext3
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filesystem is now handled by the ext4 driver.
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config EXT3_FS_POSIX_ACL
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bool "Ext3 POSIX Access Control Lists"
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depends on EXT3_FS
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select EXT4_FS_POSIX_ACL
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select FS_POSIX_ACL
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help
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This config option is here only for backward compatibility. ext3
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filesystem is now handled by the ext4 driver.
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config EXT3_FS_SECURITY
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bool "Ext3 Security Labels"
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depends on EXT3_FS
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select EXT4_FS_SECURITY
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help
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This config option is here only for backward compatibility. ext3
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filesystem is now handled by the ext4 driver.
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config EXT4_FS
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tristate "The Extended 4 (ext4) filesystem"
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# Please update EXT3_FS selects when changing these
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select JBD2
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select CRC16
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select CRYPTO
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select CRYPTO_CRC32C
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select FS_IOMAP
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help
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This is the next generation of the ext3 filesystem.
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Unlike the change from ext2 filesystem to ext3 filesystem,
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the on-disk format of ext4 is not forwards compatible with
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ext3; it is based on extent maps and it supports 48-bit
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physical block numbers. The ext4 filesystem also supports delayed
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allocation, persistent preallocation, high resolution time stamps,
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and a number of other features to improve performance and speed
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up fsck time. For more information, please see the web pages at
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http://ext4.wiki.kernel.org.
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The ext4 filesystem supports mounting an ext3 filesystem; while there
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are some performance gains from the delayed allocation and inode
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table readahead, the best performance gains require enabling ext4
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features in the filesystem using tune2fs, or formatting a new
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filesystem as an ext4 filesystem initially. Without explicit enabling
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of ext4 features, the on disk filesystem format stays fully backward
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compatible.
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To compile this file system support as a module, choose M here. The
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module will be called ext4.
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If unsure, say N.
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config EXT4_USE_FOR_EXT2
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bool "Use ext4 for ext2 file systems"
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depends on EXT4_FS
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depends on EXT2_FS=n
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default y
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help
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Allow the ext4 file system driver code to be used for ext2
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file system mounts. This allows users to reduce their
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compiled kernel size by using one file system driver for
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ext2, ext3, and ext4 file systems.
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config EXT4_FS_POSIX_ACL
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bool "Ext4 POSIX Access Control Lists"
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depends on EXT4_FS
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select FS_POSIX_ACL
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help
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POSIX Access Control Lists (ACLs) support permissions for users and
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groups beyond the owner/group/world scheme.
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If you don't know what Access Control Lists are, say N
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config EXT4_FS_SECURITY
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bool "Ext4 Security Labels"
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depends on EXT4_FS
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help
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Security labels support alternative access control models
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implemented by security modules like SELinux. This option
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enables an extended attribute handler for file security
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labels in the ext4 filesystem.
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If you are not using a security module that requires using
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extended attributes for file security labels, say N.
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config EXT4_DEBUG
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bool "Ext4 debugging support"
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depends on EXT4_FS
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help
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Enables run-time debugging support for the ext4 filesystem.
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If you select Y here, then you will be able to turn on debugging
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with a command such as:
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echo 1 > /sys/module/ext4/parameters/mballoc_debug
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