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btrfs-progs: mkfs: enhance feature table 

Add string and numeric version for later use so we don't have to convert
all the time.

Signed-off-by: David Sterba <dsterba@suse.com>
master
David Sterba 2016-11-10 17:23:17 +01:00
parent 9ab0db84ec
commit bcccfb52d9
1 changed files with 28 additions and 11 deletions
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39
utils.c
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@ -39,6 +39,7 @@
#include <linux/magic.h>
#include <getopt.h>
#include <sys/utsname.h>
#include <linux/version.h>
#include "kerncompat.h"
#include "radix-tree.h"
@ -1450,6 +1451,9 @@ out:
return ret;
}
#define VERSION_TO_STRING3(a,b,c) #a "." #b "." #c, KERNEL_VERSION(a,b,c)
#define VERSION_TO_STRING2(a,b) #a "." #b, KERNEL_VERSION(a,b,0)
/*
* Feature stability status and versions: compat <= safe <= default
*/
@ -1460,33 +1464,46 @@ static const struct btrfs_fs_feature {
* Compatibility with kernel of given version. Filesystem can be
* mounted.
*/
const char *compat_ver;
const char *compat_str;
u32 compat_ver;
/*
* Considered safe for use, but is not on by default, even if the
* kernel supports the feature.
*/
const char *safe_ver;
const char *safe_str;
u32 safe_ver;
/*
* Considered safe for use and will be turned on by default if
* supported by the running kernel.
*/
const char *default_ver;
const char *default_str;
u32 default_ver;
const char *desc;
} mkfs_features[] = {
{ "mixed-bg", BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS,
"2.6.37", "2.6.37", NULL,
VERSION_TO_STRING3(2,6,37),
VERSION_TO_STRING3(2,6,37),
NULL, 0,
"mixed data and metadata block groups" },
{ "extref", BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF,
"3.7", "3.12", "3.12",
VERSION_TO_STRING2(3,7),
VERSION_TO_STRING2(3,12),
VERSION_TO_STRING2(3,12),
"increased hardlink limit per file to 65536" },
{ "raid56", BTRFS_FEATURE_INCOMPAT_RAID56,
"3.9", NULL, NULL,
VERSION_TO_STRING2(3,9),
NULL, 0,
NULL, 0,
"raid56 extended format" },
{ "skinny-metadata", BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
"3.10", "3.18", "3.18",
VERSION_TO_STRING2(3,10),
VERSION_TO_STRING2(3,18),
VERSION_TO_STRING2(3,18),
"reduced-size metadata extent refs" },
{ "no-holes", BTRFS_FEATURE_INCOMPAT_NO_HOLES,
"3.14", "4.0", NULL,
VERSION_TO_STRING2(3,14),
VERSION_TO_STRING2(4,0),
NULL, 0,
"no explicit hole extents for files" },
/* Keep this one last */
{ "list-all", BTRFS_FEATURE_LIST_ALL, NULL }
@ -1552,11 +1569,11 @@ void btrfs_list_all_fs_features(u64 mask_disallowed)
fprintf(stderr, "%-20s- %s (0x%llx", feat->name, feat->desc,
feat->flag);
if (feat->compat_ver)
fprintf(stderr, ", compat=%s", feat->compat_ver);
fprintf(stderr, ", compat=%s", feat->compat_str);
if (feat->safe_ver)
fprintf(stderr, ", safe=%s", feat->safe_ver);
fprintf(stderr, ", safe=%s", feat->safe_str);
if (feat->default_ver)
fprintf(stderr, ", default=%s", feat->default_ver);
fprintf(stderr, ", default=%s", feat->default_str);
fprintf(stderr, ")\n");
}
}