[PATCH V10 05/11] fs/xfs: Change XFS_MOUNT_DAX to XFS_MOUNT_DAX_ALWAYS

ira.weiny
2020-04-22T21:21:36Z

From: Ira Weiny <ira.weiny@intel.com>

In prep for the new tri-state mount option which then introduces
XFS_MOUNT_DAX_NEVER.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>

---
Changes from v8
Move bit to 26
---
fs/xfs/xfs_iops.c | 2 +-
fs/xfs/xfs_mount.h | 3 +--
fs/xfs/xfs_super.c | 8 ++++----
3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index f7a99b3bbcf7..462f89af479a 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1248,7 +1248,7 @@ xfs_inode_supports_dax(
return false;

/* DAX mount option or DAX iflag must be set. */
- if (!(mp->m_flags & XFS_MOUNT_DAX) &&
+ if (!(mp->m_flags & XFS_MOUNT_DAX_ALWAYS) &&
!(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
return false;

diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index b2e4598fdf7d..f6123fb0113c 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -237,8 +237,7 @@ typedef struct xfs_mount {
#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
allocator */
#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
-
-#define XFS_MOUNT_DAX (1ULL << 62) /* TEST ONLY! */
+#define XFS_MOUNT_DAX_ALWAYS (1ULL << 26)

/*
* Max and min values for mount-option defined I/O
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 424bb9a2d532..ce169d1c7474 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -129,7 +129,7 @@ xfs_fs_show_options(
{ XFS_MOUNT_GRPID, ",grpid" },
{ XFS_MOUNT_DISCARD, ",discard" },
{ XFS_MOUNT_LARGEIO, ",largeio" },
- { XFS_MOUNT_DAX, ",dax" },
+ { XFS_MOUNT_DAX_ALWAYS, ",dax" },
{ 0, NULL }
};
struct xfs_mount *mp = XFS_M(root->d_sb);
@@ -1261,7 +1261,7 @@ xfs_fc_parse_param(
return 0;
#ifdef CONFIG_FS_DAX
case Opt_dax:
- mp->m_flags |= XFS_MOUNT_DAX;
+ mp->m_flags |= XFS_MOUNT_DAX_ALWAYS;
return 0;
#endif
default:
@@ -1454,7 +1454,7 @@ xfs_fc_fill_super(
if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
sb->s_flags |= SB_I_VERSION;

- if (mp->m_flags & XFS_MOUNT_DAX) {
+ if (mp->m_flags & XFS_MOUNT_DAX_ALWAYS) {
bool rtdev_is_dax = false, datadev_is_dax;

xfs_warn(mp,
@@ -1468,7 +1468,7 @@ xfs_fc_fill_super(
if (!rtdev_is_dax && !datadev_is_dax) {
xfs_alert(mp,
"DAX unsupported by block device. Turning off DAX.");
- mp->m_flags &= ~XFS_MOUNT_DAX;
+ mp->m_flags &= ~XFS_MOUNT_DAX_ALWAYS;
}
if (xfs_sb_version_hasreflink(&mp->m_sb)) {
xfs_alert(mp,
--
2.25.1