diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 09:11:52 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-05 16:26:31 -0700 |
| commit | e54b5bf9d7aeb92d92c7f5115035e6a851d0f0c5 (patch) | |
| tree | bb8475324ce9e718d2f16d79a18e6414fb97269d | |
| parent | a35eb41519ab8db90e87d375ee9362d6e080ca4c (diff) | |
| download | linux-e54b5bf9d7aeb92d92c7f5115035e6a851d0f0c5.tar.bz2 | |
xfs: recognize the reflink feature bit
Add the reflink feature flag to the set of recognized feature flags.
This enables users to write to reflink filesystems.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | fs/xfs/libxfs/xfs_format.h | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_super.c | 7 |
2 files changed, 9 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 5e04ea2aa902..f6547fc5e016 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -459,7 +459,8 @@ xfs_sb_has_compat_feature( #define XFS_SB_FEAT_RO_COMPAT_REFLINK (1 << 2) /* reflinked files */ #define XFS_SB_FEAT_RO_COMPAT_ALL \ (XFS_SB_FEAT_RO_COMPAT_FINOBT | \ - XFS_SB_FEAT_RO_COMPAT_RMAPBT) + XFS_SB_FEAT_RO_COMPAT_RMAPBT | \ + XFS_SB_FEAT_RO_COMPAT_REFLINK) #define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL static inline bool xfs_sb_has_ro_compat_feature( diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 15b9fcd16c67..72bde2811bd7 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1614,6 +1614,9 @@ xfs_fs_fill_super( "DAX unsupported by block device. Turning off DAX."); mp->m_flags &= ~XFS_MOUNT_DAX; } + if (xfs_sb_version_hasreflink(&mp->m_sb)) + xfs_alert(mp, + "DAX and reflink have not been tested together!"); } if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { @@ -1627,6 +1630,10 @@ xfs_fs_fill_super( "EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!"); } + if (xfs_sb_version_hasreflink(&mp->m_sb)) + xfs_alert(mp, + "EXPERIMENTAL reflink feature enabled. Use at your own risk!"); + error = xfs_mountfs(mp); if (error) goto out_filestream_unmount; |