Details are already in kernel's documentation, but make dax mount option information accessible through xfs(5) manpage. Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx> --- Changelog: V2: - Add changes suggested by Darrick on his review. man/man5/xfs.5 | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/man/man5/xfs.5 b/man/man5/xfs.5 index 7642662f..372dc08a 100644 --- a/man/man5/xfs.5 +++ b/man/man5/xfs.5 @@ -133,6 +133,23 @@ by the filesystem. CRC enabled filesystems always use the attr2 format, and so will reject the noattr2 mount option if it is set. .TP +.BR dax=value +Set CPU direct access (DAX) behavior for the current filesystem. This mount +option accepts the following values: + +"dax=inode" DAX will be enabled only on regular files with FS_XFLAG_DAX applied. + +"dax=never" DAX will not be enabled for any files. FS_XFLAG_DAX will be ignored. + +"dax=always" DAX will be enabled for all regular files, regardless of the +FS_XFLAG_DAX state. + +If no option is used when mounting a filesystem stored on a DAX capable device, +dax=inode will be used as default. + +For details regarding DAX behavior in kernel, please refer to kernel's +documentation at filesystems/dax.txt +.TP .BR discard | nodiscard Enable/disable the issuing of commands to let the block device reclaim space freed by the filesystem. This is -- 2.30.2
