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| author | Darrick J. Wong | 2017-10-18 06:37:36 +0200 |
|---|---|---|
| committer | Darrick J. Wong | 2017-10-27 00:38:23 +0200 |
| commit | dcb660f9222fd9f607e7e05f4755b39b809ca19f (patch) | |
| tree | 7f18fd46d04dae3fb1aa27192e2e7e1d4ab0110c /fs/xfs/libxfs | |
| parent | xfs: dispatch metadata scrub subcommands (diff) | |
| download | kernel-qcow2-linux-dcb660f9222fd9f607e7e05f4755b39b809ca19f.tar.gz kernel-qcow2-linux-dcb660f9222fd9f607e7e05f4755b39b809ca19f.tar.xz kernel-qcow2-linux-dcb660f9222fd9f607e7e05f4755b39b809ca19f.zip | |
xfs: probe the scrub ioctl
Create a probe scrubber with id 0. This will be used by xfs_scrub to
probe the kernel's abilities to scrub (and repair) the metadata. We do
this by validating the ioctl inputs from userspace, preparing the
filesystem for a scrub (or a repair) operation, and immediately
returning to userspace. Userspace can use the returned errno and
structure state to decide (in broad terms) if scrub/repair are
supported by the running kernel.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_fs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 3b4a36e4b541..765f91e9c732 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -483,9 +483,10 @@ struct xfs_scrub_metadata { */ /* Scrub subcommands. */ +#define XFS_SCRUB_TYPE_PROBE 0 /* presence test ioctl */ /* Number of scrub subcommands. */ -#define XFS_SCRUB_TYPE_NR 0 +#define XFS_SCRUB_TYPE_NR 1 /* i: Repair this metadata. */ #define XFS_SCRUB_IFLAG_REPAIR (1 << 0) |