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Diffstat (limited to 'Documentation/filesystems/ext4.txt')
| -rw-r--r-- | Documentation/filesystems/ext4.txt | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 5a8f7f4d2bca..7f628b9f7c4b 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -94,10 +94,10 @@ Note: More extensive information for getting started with ext4 can be * ability to pack bitmaps and inode tables into larger virtual groups via the flex_bg feature * large file support -* Inode allocation using large virtual block groups via flex_bg +* inode allocation using large virtual block groups via flex_bg * delayed allocation * large block (up to pagesize) support -* efficient new ordered mode in JBD2 and ext4(avoid using buffer head to force +* efficient new ordered mode in JBD2 and ext4 (avoid using buffer head to force the ordering) [1] Filesystems with a block size of 1k may see a limit imposed by the @@ -105,7 +105,7 @@ directory hash tree having a maximum depth of two. 2.2 Candidate features for future inclusion -* Online defrag (patches available but not well tested) +* online defrag (patches available but not well tested) * reduced mke2fs time via lazy itable initialization in conjunction with the uninit_bg feature (capability to do this is available in e2fsprogs but a kernel thread to do lazy zeroing of unused inode table blocks @@ -202,15 +202,14 @@ inode_readahead_blks=n This tuning parameter controls the maximum the buffer cache. The default value is 32 blocks. nouser_xattr Disables Extended User Attributes. See the - attr(5) manual page and http://acl.bestbits.at/ - for more information about extended attributes. + attr(5) manual page for more information about + extended attributes. noacl This option disables POSIX Access Control List support. If ACL support is enabled in the kernel configuration (CONFIG_EXT4_FS_POSIX_ACL), ACL is enabled by default on mount. See the acl(5) manual - page and http://acl.bestbits.at/ for more information - about acl. + page for more information about acl. bsddf (*) Make 'df' act like BSD. minixdf Make 'df' act like Minix. @@ -233,7 +232,7 @@ data_err=ignore(*) Just print an error message if an error occurs data_err=abort Abort the journal if an error occurs in a file data buffer in ordered mode. -grpid Give objects the same group ID as their creator. +grpid New objects have the group ID of their parent. bsdgroups nogrpid (*) New objects have the group ID of their creator. @@ -602,7 +601,7 @@ Table of Ext4 specific ioctls bitmaps and inode table, the userspace tool thus just passes the new number of blocks. -EXT4_IOC_SWAP_BOOT Swap i_blocks and associated attributes + EXT4_IOC_SWAP_BOOT Swap i_blocks and associated attributes (like i_blocks, i_size, i_flags, ...) from the specified inode with inode EXT4_BOOT_LOADER_INO (#5). This is typically |