| Message ID | 20210406115613.19211-1-cmaiolino@redhat.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | [V2] Add dax mount option to man xfs(5) | expand |
On Tue, Apr 06, 2021 at 01:56:12PM +0200, Carlos Maiolino wrote: > Details are already in kernel's documentation, but make dax mount option > information accessible through xfs(5) manpage. > > Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Yay! Reviewed-by: Darrick J. Wong <djwong@kernel.org> --D > --- > > 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 >
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
Details are already in kernel's documentation, but make dax mount option information accessible through xfs(5) manpage. Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> --- Changelog: V2: - Add changes suggested by Darrick on his review. man/man5/xfs.5 | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)