ceph: factor out libceph from Ceph file system

This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 0 insertions, 149 deletions

diff --git a/fs/ceph/crush/hash.c b/fs/ceph/crush/hash.c
deleted file mode 100644
index 5873aed694bf..000000000000
--- a/fs/ceph/crush/hash.c
+++ /dev/null
@@ -1,149 +0,0 @@
-
-#include <linux/types.h>
-#include "hash.h"
-
-/*
- * Robert Jenkins' function for mixing 32-bit values
- * http://burtleburtle.net/bob/hash/evahash.html
- * a, b = random bits, c = input and output
- */
-#define crush_hashmix(a, b, c) do {			\
-		a = a-b;  a = a-c;  a = a^(c>>13);	\
-		b = b-c;  b = b-a;  b = b^(a<<8);	\
-		c = c-a;  c = c-b;  c = c^(b>>13);	\
-		a = a-b;  a = a-c;  a = a^(c>>12);	\
-		b = b-c;  b = b-a;  b = b^(a<<16);	\
-		c = c-a;  c = c-b;  c = c^(b>>5);	\
-		a = a-b;  a = a-c;  a = a^(c>>3);	\
-		b = b-c;  b = b-a;  b = b^(a<<10);	\
-		c = c-a;  c = c-b;  c = c^(b>>15);	\
-	} while (0)
-
-#define crush_hash_seed 1315423911
-
-static __u32 crush_hash32_rjenkins1(__u32 a)
-{
-	__u32 hash = crush_hash_seed ^ a;
-	__u32 b = a;
-	__u32 x = 231232;
-	__u32 y = 1232;
-	crush_hashmix(b, x, hash);
-	crush_hashmix(y, a, hash);
-	return hash;
-}
-
-static __u32 crush_hash32_rjenkins1_2(__u32 a, __u32 b)
-{
-	__u32 hash = crush_hash_seed ^ a ^ b;
-	__u32 x = 231232;
-	__u32 y = 1232;
-	crush_hashmix(a, b, hash);
-	crush_hashmix(x, a, hash);
-	crush_hashmix(b, y, hash);
-	return hash;
-}
-
-static __u32 crush_hash32_rjenkins1_3(__u32 a, __u32 b, __u32 c)
-{
-	__u32 hash = crush_hash_seed ^ a ^ b ^ c;
-	__u32 x = 231232;
-	__u32 y = 1232;
-	crush_hashmix(a, b, hash);
-	crush_hashmix(c, x, hash);
-	crush_hashmix(y, a, hash);
-	crush_hashmix(b, x, hash);
-	crush_hashmix(y, c, hash);
-	return hash;
-}
-
-static __u32 crush_hash32_rjenkins1_4(__u32 a, __u32 b, __u32 c, __u32 d)
-{
-	__u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d;
-	__u32 x = 231232;
-	__u32 y = 1232;
-	crush_hashmix(a, b, hash);
-	crush_hashmix(c, d, hash);
-	crush_hashmix(a, x, hash);
-	crush_hashmix(y, b, hash);
-	crush_hashmix(c, x, hash);
-	crush_hashmix(y, d, hash);
-	return hash;
-}
-
-static __u32 crush_hash32_rjenkins1_5(__u32 a, __u32 b, __u32 c, __u32 d,
-				      __u32 e)
-{
-	__u32 hash = crush_hash_seed ^ a ^ b ^ c ^ d ^ e;
-	__u32 x = 231232;
-	__u32 y = 1232;
-	crush_hashmix(a, b, hash);
-	crush_hashmix(c, d, hash);
-	crush_hashmix(e, x, hash);
-	crush_hashmix(y, a, hash);
-	crush_hashmix(b, x, hash);
-	crush_hashmix(y, c, hash);
-	crush_hashmix(d, x, hash);
-	crush_hashmix(y, e, hash);
-	return hash;
-}
-
-
-__u32 crush_hash32(int type, __u32 a)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return crush_hash32_rjenkins1(a);
-	default:
-		return 0;
-	}
-}
-
-__u32 crush_hash32_2(int type, __u32 a, __u32 b)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return crush_hash32_rjenkins1_2(a, b);
-	default:
-		return 0;
-	}
-}
-
-__u32 crush_hash32_3(int type, __u32 a, __u32 b, __u32 c)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return crush_hash32_rjenkins1_3(a, b, c);
-	default:
-		return 0;
-	}
-}
-
-__u32 crush_hash32_4(int type, __u32 a, __u32 b, __u32 c, __u32 d)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return crush_hash32_rjenkins1_4(a, b, c, d);
-	default:
-		return 0;
-	}
-}
-
-__u32 crush_hash32_5(int type, __u32 a, __u32 b, __u32 c, __u32 d, __u32 e)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return crush_hash32_rjenkins1_5(a, b, c, d, e);
-	default:
-		return 0;
-	}
-}
-
-const char *crush_hash_name(int type)
-{
-	switch (type) {
-	case CRUSH_HASH_RJENKINS1:
-		return "rjenkins1";
-	default:
-		return "unknown";
-	}
-}