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| author | Al Viro <viro@ZenIV.linux.org.uk> | 2014-12-19 06:51:26 +0000 |
|---|---|---|
| committer | Dave Kleikamp <dave.kleikamp@oracle.com> | 2014-12-23 17:01:24 -0600 |
| commit | e1f1fe798d2f2eab904624125ba924d08205f960 (patch) | |
| tree | 7da293aa0c88034b38b03afeb7e46823a7f87751 /fs/jfs/jfs_xtree.h | |
| parent | 53262d12d1658669029ab39a63e3d314108abe66 (diff) | |
| download | linux-stable-e1f1fe798d2f2eab904624125ba924d08205f960.tar.gz linux-stable-e1f1fe798d2f2eab904624125ba924d08205f960.tar.bz2 linux-stable-e1f1fe798d2f2eab904624125ba924d08205f960.zip | |
jfs: get rid of homegrown endianness helpers
Get rid of le24 stuff, along with the bitfields use - all that stuff
can be done with standard stuff, in sparse-verifiable manner. Moreover,
that way (shift-and-mask) often generates better code - gcc optimizer
sucks on bitfields...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
----
Diffstat (limited to 'fs/jfs/jfs_xtree.h')
| -rw-r--r-- | fs/jfs/jfs_xtree.h | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/fs/jfs/jfs_xtree.h b/fs/jfs/jfs_xtree.h index 08c0c749b986..1e0987986d5f 100644 --- a/fs/jfs/jfs_xtree.h +++ b/fs/jfs/jfs_xtree.h @@ -29,13 +29,11 @@ * extent allocation descriptor (xad) */ typedef struct xad { - unsigned flag:8; /* 1: flag */ - unsigned rsvrd:16; /* 2: reserved */ - unsigned off1:8; /* 1: offset in unit of fsblksize */ - __le32 off2; /* 4: offset in unit of fsblksize */ - unsigned len:24; /* 3: length in unit of fsblksize */ - unsigned addr1:8; /* 1: address in unit of fsblksize */ - __le32 addr2; /* 4: address in unit of fsblksize */ + __u8 flag; /* 1: flag */ + __u8 rsvrd[2]; /* 2: reserved */ + __u8 off1; /* 1: offset in unit of fsblksize */ + __le32 off2; /* 4: offset in unit of fsblksize */ + pxd_t loc; /* 8: length and address in unit of fsblksize */ } xad_t; /* (16) */ #define MAXXLEN ((1 << 24) - 1) @@ -49,19 +47,14 @@ typedef struct xad { (xad)->off1 = ((u64)offset64) >> 32;\ (xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\ } -#define XADaddress(xad, address64)\ -{\ - (xad)->addr1 = ((u64)address64) >> 32;\ - (xad)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\ -} -#define XADlength(xad, length32) (xad)->len = __cpu_to_le24(length32) +#define XADaddress(xad, address64) PXDaddress(&(xad)->loc, address64) +#define XADlength(xad, length32) PXDlength(&(xad)->loc, length32) /* xad_t field extraction */ #define offsetXAD(xad)\ ( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2)) -#define addressXAD(xad)\ - ( ((s64)((xad)->addr1)) << 32 | __le32_to_cpu((xad)->addr2)) -#define lengthXAD(xad) __le24_to_cpu((xad)->len) +#define addressXAD(xad) addressPXD(&(xad)->loc) +#define lengthXAD(xad) lengthPXD(&(xad)->loc) /* xad list */ struct xadlist { |