diff mbox series

[v6,09/12] xfs: refactor xfs_parseags()

Message ID 157118649265.9678.734489676015273741.stgit@fedora-28 (mailing list archive)
State Superseded, archived
Headers show
Series xfs: mount API patch series | expand

Commit Message

Ian Kent Oct. 16, 2019, 12:41 a.m. UTC 
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@themaw.net>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/xfs_super.c |  290 ++++++++++++++++++++++++++++------------------------
 1 file changed, 155 insertions(+), 135 deletions(-)

Comments

Christoph Hellwig Oct. 16, 2019, 8:36 a.m. UTC | #1 
On Wed, Oct 16, 2019 at 08:41:32AM +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().

Use up the full space avaiable for commit log, please.

> +	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;

It seems all these breaks could simply directly do a return 0, make
the function a tidbit easier to read.

> +		ret = xfs_parse_param(token, p, args, mp,
> +				      &dsunit, &dswidth, &iosizelog);

Please use up the full 80 chars on the first line
diff mbox series

Patch

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index e54348be2a17..cd17e4e6b922 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -155,6 +155,156 @@  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:
+		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.
@@ -176,7 +326,6 @@  xfs_parseargs(
 	substring_t		args[MAX_OPT_ARGS];
 	int			dsunit = 0;
 	int			dswidth = 0;
-	int			iosize = 0;
 	uint8_t			iosizelog = 0;
 
 	/*
@@ -206,145 +355,16 @@  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:
-			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;
 	}
 
 	/*