Lines Matching refs:ext4
4 ext4 General Information
12 Mailing list: linux-ext4@vger.kernel.org
13 Web site: http://ext4.wiki.kernel.org
19 Note: More extensive information for getting started with ext4 can be
20 found at the ext4 wiki site at the URL:
21 http://ext4.wiki.kernel.org/index.php/Ext4_Howto
35 - Create a new filesystem using the ext4 filesystem type:
37 # mke2fs -t ext4 /dev/hda1
50 # mount -t ext4 /dev/hda1 /wherever
56 note that ext4 enables write barriers by default, while ext3 does
59 '-o barriers=[0|1]' mount option for both ext3 and ext4 filesystems
92 * efficient new ordered mode in JBD2 and ext4 (avoid using buffer head to force
141 When mounting an ext4 filesystem, the following option are accepted:
145 Mount filesystem read only. Note that ext4 will replay the journal (and
208 ext4 mount options.
212 that ext4's inode table readahead algorithm will pre-read into the
290 Defer block allocation until just before ext4 writes out the block(s)
291 in question. This allows ext4 to better allocation decisions more
301 Maximum amount of time ext4 should wait for additional filesystem
311 time, ext4 will try sleeping for the commit time to see if other
332 O_TRUNC)/write(fd,..)/close(fd). If auto_da_alloc is enabled, ext4
355 Controls whether ext4 should issue discard/TRIM commands to the
372 Controls whether or not ext4 should use the DIO read locking. If the
373 dioread_nolock option is specified ext4 will allocate uninitialized
375 IO completes. This approach allows ext4 code to avoid using inode
411 In data=writeback mode, ext4 does not journal data at all. This mode provides
415 typically provide the best ext4 performance.
419 In data=ordered mode, ext4 only officially journals metadata, but it logically
439 Information about mounted ext4 file systems can be found in
440 /proc/fs/ext4. Each mounted filesystem will have a directory in
441 /proc/fs/ext4 based on its device name (i.e., /proc/fs/ext4/hdc or
442 /proc/fs/ext4/dm-0). The files in each per-device directory are shown
445 Files in /proc/fs/ext4/<devname>
453 Information about mounted ext4 file systems can be found in
454 /sys/fs/ext4. Each mounted filesystem will have a directory in
455 /sys/fs/ext4 based on its device name (i.e., /sys/fs/ext4/hdc or
456 /sys/fs/ext4/dm-0). The files in each per-device directory are shown
459 Files in /sys/fs/ext4/<devname>:
461 (see also Documentation/ABI/testing/sysfs-fs-ext4)
476 blocks that ext4's inode table readahead algorithm will pre-read into
490 ext4 superblock
533 ext4-specific functionality. An incomplete list of these ioctls is shown in the
534 table below. This list includes truly ext4-specific ioctls (``EXT4_IOC_*``) as
535 well as ioctls that may have been ext4-specific originally but are now supported
542 an integer bitfield, with bit values described in ext4.h.
546 an integer bitfield, with bit values described in ext4.h.
584 ext3 indirect block mapped inode to ext4 extent mapped inode by walking
586 contiguous block ranges into ext4 extents of the temporary inode. Then,
588 ext4 filesystem, however suggestion is to create fresh ext4 filesystem
616 kernel source: <file:fs/ext4/>
622 http://www.bullopensource.org/ext4/
623 http://ext4.wiki.kernel.org/index.php/Main_Page