diff options
| author | Brian Foster <bfoster@redhat.com> | 2023-04-03 08:38:51 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-02-15 22:08:37 -0500 |
| commit | 7844bffb38a4369150df3b642978f1d6d8060e2d (patch) | |
| tree | d6252e691f130f6d7500d9a602c7f2acfaa986cf /fs/xfs/xfs_super.c | |
| parent | 619b6529e9e7d2dd8ee02256f1542ab3fdff7d1b (diff) | |
xfs: add nodataio mount option to skip all data I/Oxfs_no_data_io
When mounted with nodataio, add the NOSUBMIT iomap flag to all data
mappings passed into the iomap layer. This causes iomap to skip all
data I/O submission and thus facilitates metadata only performance
testing.
For experimental use only. Only tested insofar as fsstress runs for
a few minutes without blowing up.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_super.c')
| -rw-r--r-- | fs/xfs/xfs_super.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index aff20ddd4a9f..8ce4af573437 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -102,7 +102,7 @@ enum { Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota, Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce, - Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum, + Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum, Opt_nodataio, }; static const struct fs_parameter_spec xfs_fs_parameters[] = { @@ -147,6 +147,7 @@ static const struct fs_parameter_spec xfs_fs_parameters[] = { fsparam_flag("nodiscard", Opt_nodiscard), fsparam_flag("dax", Opt_dax), fsparam_enum("dax", Opt_dax_enum, dax_param_enums), + fsparam_flag("nodataio", Opt_nodataio), {} }; @@ -1387,6 +1388,9 @@ xfs_fs_parse_param( xfs_fs_warn_deprecated(fc, param, XFS_FEAT_NOATTR2, true); parsing_mp->m_features |= XFS_FEAT_NOATTR2; return 0; + case Opt_nodataio: + parsing_mp->m_features |= XFS_FEAT_NODATAIO; + return 0; default: xfs_warn(parsing_mp, "unknown mount option [%s].", param->key); return -EINVAL; |