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
139 When mounting an ext4 filesystem, the following option are accepted:
143 Mount filesystem read only. Note that ext4 will replay the journal (and
203 ext4 mount options.
207 that ext4's inode table readahead algorithm will pre-read into the
285 Defer block allocation until just before ext4 writes out the block(s)
286 in question. This allows ext4 to better allocation decisions more
296 Maximum amount of time ext4 should wait for additional filesystem
306 time, ext4 will try sleeping for the commit time to see if other
327 O_TRUNC)/write(fd,..)/close(fd). If auto_da_alloc is enabled, ext4
350 Controls whether ext4 should issue discard/TRIM commands to the
367 Controls whether or not ext4 should use the DIO read locking. If the
368 dioread_nolock option is specified ext4 will allocate uninitialized
370 IO completes. This approach allows ext4 code to avoid using inode
399 In data=writeback mode, ext4 does not journal data at all. This mode provides
403 typically provide the best ext4 performance.
407 In data=ordered mode, ext4 only officially journals metadata, but it logically
427 Information about mounted ext4 file systems can be found in
428 /proc/fs/ext4. Each mounted filesystem will have a directory in
429 /proc/fs/ext4 based on its device name (i.e., /proc/fs/ext4/hdc or
430 /proc/fs/ext4/dm-0). The files in each per-device directory are shown
433 Files in /proc/fs/ext4/<devname>
441 Information about mounted ext4 file systems can be found in
442 /sys/fs/ext4. Each mounted filesystem will have a directory in
443 /sys/fs/ext4 based on its device name (i.e., /sys/fs/ext4/hdc or
444 /sys/fs/ext4/dm-0). The files in each per-device directory are shown
447 Files in /sys/fs/ext4/<devname>:
449 (see also Documentation/ABI/testing/sysfs-fs-ext4)
464 blocks that ext4's inode table readahead algorithm will pre-read into
478 ext4 superblock
528 an integer bitfield, with bit values described in ext4.h. This ioctl is
533 an integer bitfield, with bit values described in ext4.h. This ioctl is
572 ext3 indirect block mapped inode to ext4 extent mapped inode by walking
574 contiguous block ranges into ext4 extents of the temporary inode. Then,
576 ext4 filesystem, however suggestion is to create fresh ext4 filesystem
604 kernel source: <file:fs/ext4/>
610 http://www.bullopensource.org/ext4/
611 http://ext4.wiki.kernel.org/index.php/Main_Page