On Fri, Aug 23, 2019 at 08:59:38AM +0800, Ian Kent wrote:
> Refactor xfs_parseags(), move the entire token case block to a
> separate function in an attempt to highlight the code that
> actually changes in converting to use the new mount api.
>
> The only changes are what's needed to communicate the variables
> dsunit, dswidth and iosizelog back to xfs_parseags().
>
> Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
> ---
Looks Ok:
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> fs/xfs/xfs_super.c | 292 ++++++++++++++++++++++++++++------------------------
> 1 file changed, 156 insertions(+), 136 deletions(-)
>
> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
> index 49c87fb921f1..3ae29938dd89 100644
> --- a/fs/xfs/xfs_super.c
> +++ b/fs/xfs/xfs_super.c
> @@ -198,6 +198,157 @@ match_kstrtoint(const substring_t *s, unsigned int base, int *res)
> return ret;
> }
>
> +STATIC int
> +xfs_parse_param(
> + int token,
> + char *p,
> + substring_t *args,
> + struct xfs_mount *mp,
> + int *dsunit,
> + int *dswidth,
> + uint8_t *iosizelog)
> +{
> + int iosize = 0;
> +
> + switch (token) {
> + case Opt_logbufs:
> + if (match_int(args, &mp->m_logbufs))
> + return -EINVAL;
> + break;
> + case Opt_logbsize:
> + if (match_kstrtoint(args, 10, &mp->m_logbsize))
> + return -EINVAL;
> + break;
> + case Opt_logdev:
> + kfree(mp->m_logname);
> + mp->m_logname = match_strdup(args);
> + if (!mp->m_logname)
> + return -ENOMEM;
> + break;
> + case Opt_rtdev:
> + kfree(mp->m_rtname);
> + mp->m_rtname = match_strdup(args);
> + if (!mp->m_rtname)
> + return -ENOMEM;
> + break;
> + case Opt_allocsize:
> + case Opt_biosize:
> + if (match_kstrtoint(args, 10, &iosize))
> + return -EINVAL;
> + *iosizelog = ffs(iosize) - 1;
> + break;
> + case Opt_grpid:
> + case Opt_bsdgroups:
> + mp->m_flags |= XFS_MOUNT_GRPID;
> + break;
> + case Opt_nogrpid:
> + case Opt_sysvgroups:
> + mp->m_flags &= ~XFS_MOUNT_GRPID;
> + break;
> + case Opt_wsync:
> + mp->m_flags |= XFS_MOUNT_WSYNC;
> + break;
> + case Opt_norecovery:
> + mp->m_flags |= XFS_MOUNT_NORECOVERY;
> + break;
> + case Opt_noalign:
> + mp->m_flags |= XFS_MOUNT_NOALIGN;
> + break;
> + case Opt_swalloc:
> + mp->m_flags |= XFS_MOUNT_SWALLOC;
> + break;
> + case Opt_sunit:
> + if (match_int(args, dsunit))
> + return -EINVAL;
> + break;
> + case Opt_swidth:
> + if (match_int(args, dswidth))
> + return -EINVAL;
> + break;
> + case Opt_inode32:
> + mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
> + break;
> + case Opt_inode64:
> + mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
> + break;
> + case Opt_nouuid:
> + mp->m_flags |= XFS_MOUNT_NOUUID;
> + break;
> + case Opt_ikeep:
> + mp->m_flags |= XFS_MOUNT_IKEEP;
> + break;
> + case Opt_noikeep:
> + mp->m_flags &= ~XFS_MOUNT_IKEEP;
> + break;
> + case Opt_largeio:
> + mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
> + break;
> + case Opt_nolargeio:
> + mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
> + break;
> + case Opt_attr2:
> + mp->m_flags |= XFS_MOUNT_ATTR2;
> + break;
> + case Opt_noattr2:
> + mp->m_flags &= ~XFS_MOUNT_ATTR2;
> + mp->m_flags |= XFS_MOUNT_NOATTR2;
> + break;
> + case Opt_filestreams:
> + mp->m_flags |= XFS_MOUNT_FILESTREAMS;
> + break;
> + case Opt_noquota:
> + mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
> + mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
> + mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
> + break;
> + case Opt_quota:
> + case Opt_uquota:
> + case Opt_usrquota:
> + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
> + XFS_UQUOTA_ENFD);
> + break;
> + case Opt_qnoenforce:
> + case Opt_uqnoenforce:
> + mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
> + mp->m_qflags &= ~XFS_UQUOTA_ENFD;
> + break;
> + case Opt_pquota:
> + case Opt_prjquota:
> + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
> + XFS_PQUOTA_ENFD);
> + break;
> + case Opt_pqnoenforce:
> + mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
> + mp->m_qflags &= ~XFS_PQUOTA_ENFD;
> + break;
> + case Opt_gquota:
> + case Opt_grpquota:
> + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
> + XFS_GQUOTA_ENFD);
> + break;
> + case Opt_gqnoenforce:
> + mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
> + mp->m_qflags &= ~XFS_GQUOTA_ENFD;
> + break;
> + case Opt_discard:
> + mp->m_flags |= XFS_MOUNT_DISCARD;
> + break;
> + case Opt_nodiscard:
> + mp->m_flags &= ~XFS_MOUNT_DISCARD;
> + break;
> +#ifdef CONFIG_FS_DAX
> + case Opt_dax:
> + mp->m_flags |= XFS_MOUNT_DAX;
> + break;
> +#endif
> + default:
> + xfs_warn(mp, "unknown mount option [%s].", p);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> /*
> * This function fills in xfs_mount_t fields based on mount args.
> * Note: the superblock has _not_ yet been read in.
> @@ -219,7 +370,6 @@ xfs_parseargs(
> substring_t args[MAX_OPT_ARGS];
> int dsunit = 0;
> int dswidth = 0;
> - int iosize = 0;
> uint8_t iosizelog = 0;
>
> /*
> @@ -258,146 +408,16 @@ xfs_parseargs(
>
> while ((p = strsep(&options, ",")) != NULL) {
> int token;
> + int ret;
>
> if (!*p)
> continue;
>
> token = match_token(p, tokens, args);
> - switch (token) {
> - case Opt_logbufs:
> - if (match_int(args, &mp->m_logbufs))
> - return -EINVAL;
> - break;
> - case Opt_logbsize:
> - if (match_kstrtoint(args, 10, &mp->m_logbsize))
> - return -EINVAL;
> - break;
> - case Opt_logdev:
> - kfree(mp->m_logname);
> - mp->m_logname = match_strdup(args);
> - if (!mp->m_logname)
> - return -ENOMEM;
> - break;
> - case Opt_rtdev:
> - kfree(mp->m_rtname);
> - mp->m_rtname = match_strdup(args);
> - if (!mp->m_rtname)
> - return -ENOMEM;
> - break;
> - case Opt_allocsize:
> - case Opt_biosize:
> - if (match_kstrtoint(args, 10, &iosize))
> - return -EINVAL;
> - iosizelog = ffs(iosize) - 1;
> - break;
> - case Opt_grpid:
> - case Opt_bsdgroups:
> - mp->m_flags |= XFS_MOUNT_GRPID;
> - break;
> - case Opt_nogrpid:
> - case Opt_sysvgroups:
> - mp->m_flags &= ~XFS_MOUNT_GRPID;
> - break;
> - case Opt_wsync:
> - mp->m_flags |= XFS_MOUNT_WSYNC;
> - break;
> - case Opt_norecovery:
> - mp->m_flags |= XFS_MOUNT_NORECOVERY;
> - break;
> - case Opt_noalign:
> - mp->m_flags |= XFS_MOUNT_NOALIGN;
> - break;
> - case Opt_swalloc:
> - mp->m_flags |= XFS_MOUNT_SWALLOC;
> - break;
> - case Opt_sunit:
> - if (match_int(args, &dsunit))
> - return -EINVAL;
> - break;
> - case Opt_swidth:
> - if (match_int(args, &dswidth))
> - return -EINVAL;
> - break;
> - case Opt_inode32:
> - mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
> - break;
> - case Opt_inode64:
> - mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
> - break;
> - case Opt_nouuid:
> - mp->m_flags |= XFS_MOUNT_NOUUID;
> - break;
> - case Opt_ikeep:
> - mp->m_flags |= XFS_MOUNT_IKEEP;
> - break;
> - case Opt_noikeep:
> - mp->m_flags &= ~XFS_MOUNT_IKEEP;
> - break;
> - case Opt_largeio:
> - mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
> - break;
> - case Opt_nolargeio:
> - mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
> - break;
> - case Opt_attr2:
> - mp->m_flags |= XFS_MOUNT_ATTR2;
> - break;
> - case Opt_noattr2:
> - mp->m_flags &= ~XFS_MOUNT_ATTR2;
> - mp->m_flags |= XFS_MOUNT_NOATTR2;
> - break;
> - case Opt_filestreams:
> - mp->m_flags |= XFS_MOUNT_FILESTREAMS;
> - break;
> - case Opt_noquota:
> - mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
> - mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
> - mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
> - break;
> - case Opt_quota:
> - case Opt_uquota:
> - case Opt_usrquota:
> - mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
> - XFS_UQUOTA_ENFD);
> - break;
> - case Opt_qnoenforce:
> - case Opt_uqnoenforce:
> - mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
> - mp->m_qflags &= ~XFS_UQUOTA_ENFD;
> - break;
> - case Opt_pquota:
> - case Opt_prjquota:
> - mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
> - XFS_PQUOTA_ENFD);
> - break;
> - case Opt_pqnoenforce:
> - mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
> - mp->m_qflags &= ~XFS_PQUOTA_ENFD;
> - break;
> - case Opt_gquota:
> - case Opt_grpquota:
> - mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
> - XFS_GQUOTA_ENFD);
> - break;
> - case Opt_gqnoenforce:
> - mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
> - mp->m_qflags &= ~XFS_GQUOTA_ENFD;
> - break;
> - case Opt_discard:
> - mp->m_flags |= XFS_MOUNT_DISCARD;
> - break;
> - case Opt_nodiscard:
> - mp->m_flags &= ~XFS_MOUNT_DISCARD;
> - break;
> -#ifdef CONFIG_FS_DAX
> - case Opt_dax:
> - mp->m_flags |= XFS_MOUNT_DAX;
> - break;
> -#endif
> - default:
> - xfs_warn(mp, "unknown mount option [%s].", p);
> - return -EINVAL;
> - }
> + ret = xfs_parse_param(token, p, args, mp,
> + &dsunit, &dswidth, &iosizelog);
> + if (ret)
> + return ret;
> }
>
> /*
>
