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ubifs: Fix default compression selection in ubifs 

When ubifs is build without the LZO compressor and no compressor is
given the creation of the default file system will fail. before
selection the LZO compressor check if it is present and if not fall back
to the zlib or none.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Gabor Juhos 2018-12-09 18:12:13 +01:00 committed by Richard Weinberger
parent 6554a56f35
commit d62e98ed1e
1 changed files with 12 additions and 1 deletions
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13
fs/ubifs/sb.c
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@ -63,6 +63,17 @@
/* Default time granularity in nanoseconds */
#define DEFAULT_TIME_GRAN 1000000000
static int get_default_compressor(struct ubifs_info *c)
{
if (ubifs_compr_present(c, UBIFS_COMPR_LZO))
return UBIFS_COMPR_LZO;
if (ubifs_compr_present(c, UBIFS_COMPR_ZLIB))
return UBIFS_COMPR_ZLIB;
return UBIFS_COMPR_NONE;
}
/**
* create_default_filesystem - format empty UBI volume.
* @c: UBIFS file-system description object
@ -207,7 +218,7 @@ static int create_default_filesystem(struct ubifs_info *c)
if (c->mount_opts.override_compr)
sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);
else
sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO);
sup->default_compr = cpu_to_le16(get_default_compressor(c));
generate_random_uuid(sup->uuid);