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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-02-12 16:49:49 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2021-02-16 16:11:14 -0500 |
| commit | a0492339fc70f1f7aa98f0cab55b78b0be124711 (patch) | |
| tree | 08bcf8dc378648c8ba549b529fc8246d283c584b /fs/nfs/fs_context.c | |
| parent | ed7bcdb374d20fab9e9dc36853a6735c047ad1b1 (diff) | |
| download | lwn-a0492339fc70f1f7aa98f0cab55b78b0be124711.tar.gz lwn-a0492339fc70f1f7aa98f0cab55b78b0be124711.zip | |
NFS: Add mount options supporting eager writes
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/fs_context.c')
| -rw-r--r-- | fs/nfs/fs_context.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c index 06894bcdea2d..b6be02aa79f0 100644 --- a/fs/nfs/fs_context.c +++ b/fs/nfs/fs_context.c @@ -82,6 +82,7 @@ enum nfs_param { Opt_v, Opt_vers, Opt_wsize, + Opt_write, }; enum { @@ -113,6 +114,19 @@ static const struct constant_table nfs_param_enums_lookupcache[] = { {} }; +enum { + Opt_write_lazy, + Opt_write_eager, + Opt_write_wait, +}; + +static const struct constant_table nfs_param_enums_write[] = { + { "lazy", Opt_write_lazy }, + { "eager", Opt_write_eager }, + { "wait", Opt_write_wait }, + {} +}; + static const struct fs_parameter_spec nfs_fs_parameters[] = { fsparam_flag_no("ac", Opt_ac), fsparam_u32 ("acdirmax", Opt_acdirmax), @@ -171,6 +185,7 @@ static const struct fs_parameter_spec nfs_fs_parameters[] = { fsparam_flag ("v4.1", Opt_v), fsparam_flag ("v4.2", Opt_v), fsparam_string("vers", Opt_vers), + fsparam_enum ("write", Opt_write, nfs_param_enums_write), fsparam_u32 ("wsize", Opt_wsize), {} }; @@ -770,6 +785,24 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, goto out_invalid_value; } break; + case Opt_write: + switch (result.uint_32) { + case Opt_write_lazy: + ctx->flags &= + ~(NFS_MOUNT_WRITE_EAGER | NFS_MOUNT_WRITE_WAIT); + break; + case Opt_write_eager: + ctx->flags |= NFS_MOUNT_WRITE_EAGER; + ctx->flags &= ~NFS_MOUNT_WRITE_WAIT; + break; + case Opt_write_wait: + ctx->flags |= + NFS_MOUNT_WRITE_EAGER | NFS_MOUNT_WRITE_WAIT; + break; + default: + goto out_invalid_value; + } + break; /* * Special options |