diff options
| author | Alexander Viro <viro@www.linux.org.uk> | 2003-09-22 22:52:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.osdl.org> | 2003-09-22 22:52:17 -0700 |
| commit | 40d2adc65cc233bbbd5437efe1df224b04a5ebf1 (patch) | |
| tree | 88f5df8a1b2c13aedcddf5f09fd391e4f52015d9 /include/linux/raid | |
| parent | 18d0c6d3ba8df654d99677ab070037d6c0d9c055 (diff) | |
[PATCH] 32-bit dev_t: internal use
Starting the conversion:
* internal dev_t made 32bit.
* new helpers - new_encode_dev(), new_decode_dev(), huge_encode_dev(),
huge_decode_dev(), new_valid_dev(). They do encoding/decoding of 32bit and
64bit values; for now huge_... are aliases for new_... and new_valid_dev()
is always true. We do 12:20 for 32bit; representation is compatible with
16bit one - we have major in bits 19--8 and minor in 31--20,7--0. That's
what the userland sees; internally we have (major << 20)|minor, of course.
* MKDEV(), MAJOR() and MINOR() updated.
* several places used to handle Missed'em'V dev_t (14:18 split)
manually; that stuff had been taken into common helpers.
Now we can start replacing old_... with new_... and huge_..., depending
on the width available. MKDEV() callers should (for now) make sure that major
and minor are within 12:20. That's what the next chunk will do.
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/md_k.h | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 70c5d117da8d..c9466321a2b2 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -64,11 +64,7 @@ static inline int level_to_pers (int level) typedef struct mddev_s mddev_t; typedef struct mdk_rdev_s mdk_rdev_t; -#if (MINORBITS != 8) -#error MD does not handle bigger kdev yet -#endif - -#define MAX_MD_DEVS (1<<MINORBITS) /* Max number of md dev */ +#define MAX_MD_DEVS 256 /* Max number of md dev */ /* * options passed in raidrun: |