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| author |   Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-11-01 14:57:49 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-12-03 13:14:05 +0200 |
| commit | 553dea4dd531562688ba01c641c7f8fc7abaaf8c (patch) | |
| tree | 823d2cb0b8684e7975ca3193a9fec2a53e3995b1 /fs/ubifs/ubifs.h | |
| parent | UBIFS: use bit-fields to store compression type (diff) | |
| download | linux-dev-553dea4dd531562688ba01c641c7f8fc7abaaf8c.tar.xz linux-dev-553dea4dd531562688ba01c641c7f8fc7abaaf8c.zip | |
UBIFS: introduce compression mount options
It is very handy to be able to change default UBIFS compressor
via mount options. Introduce -o compr=<name> mount option support.
Currently only "none", "lzo" and "zlib" compressors are supported.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 4d76aba57ee1..16840e099eff 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -893,13 +893,21 @@ struct ubifs_orphan { /** * struct ubifs_mount_opts - UBIFS-specific mount options information. * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast) - * @bulk_read: enable bulk-reads - * @chk_data_crc: check CRCs when reading data nodes + * @bulk_read: enable/disable bulk-reads (%0 default, %1 disabe, %2 enable) + * @chk_data_crc: enable/disable CRC data checking when reading data nodes + * (%0 default, %1 disabe, %2 enable) + * @override_compr: override default compressor (%0 - do not override and use + * superblock compressor, %1 - override and use compressor + * specified in @compr_type) + * @compr_type: compressor type to override the superblock compressor with + * (%UBIFS_COMPR_NONE, etc) */ struct ubifs_mount_opts { unsigned int unmount_mode:2; unsigned int bulk_read:2; unsigned int chk_data_crc:2; + unsigned int override_compr:1; + unsigned int compr_type:2; }; /** |