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[PATCH] ext4: removesector_t bits check 

Previously when in-kernel ext4 block type is sector_t, it's only 4 bits long
under some 32bit arch (when CONFIG_LBD is not on).  So we need to check the
size of sector_t before we read 48bit long on-disk blocks to in-kernel blocks.

These checks are unnecessary now as we changed the in-kernel blocks to
unsigned longlong.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mingming Cao 2006-10-11 01:21:13 -07:00 committed by Linus Torvalds
parent 2ae0210760
commit 9b8f1f0106
2 changed files with 8 additions and 14 deletions
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12
fs/ext4/extents.c
View File

@ -53,8 +53,7 @@ static inline ext4_fsblk_t ext_pblock(struct ext4_extent *ex)
ext4_fsblk_t block;
block = le32_to_cpu(ex->ee_start);
if (sizeof(ext4_fsblk_t) > 4)
block |= ((ext4_fsblk_t) le16_to_cpu(ex->ee_start_hi) << 31) << 1;
block |= ((ext4_fsblk_t) le16_to_cpu(ex->ee_start_hi) << 31) << 1;
return block;
}
@ -67,8 +66,7 @@ static inline ext4_fsblk_t idx_pblock(struct ext4_extent_idx *ix)
ext4_fsblk_t block;
block = le32_to_cpu(ix->ei_leaf);
if (sizeof(ext4_fsblk_t) > 4)
block |= ((ext4_fsblk_t) le16_to_cpu(ix->ei_leaf_hi) << 31) << 1;
block |= ((ext4_fsblk_t) le16_to_cpu(ix->ei_leaf_hi) << 31) << 1;
return block;
}
@ -80,8 +78,7 @@ static inline ext4_fsblk_t idx_pblock(struct ext4_extent_idx *ix)
static inline void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb)
{
ex->ee_start = cpu_to_le32((unsigned long) (pb & 0xffffffff));
if (sizeof(ext4_fsblk_t) > 4)
ex->ee_start_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
ex->ee_start_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
}
/*
@ -92,8 +89,7 @@ static inline void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb
static inline void ext4_idx_store_pblock(struct ext4_extent_idx *ix, ext4_fsblk_t pb)
{
ix->ei_leaf = cpu_to_le32((unsigned long) (pb & 0xffffffff));
if (sizeof(ext4_fsblk_t) > 4)
ix->ei_leaf_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
ix->ei_leaf_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
}
static int ext4_ext_check_header(const char *function, struct inode *inode,

10
fs/ext4/inode.c
View File

@ -2643,9 +2643,8 @@ void ext4_read_inode(struct inode * inode)
ei->i_frag_size = raw_inode->i_fsize;
#endif
ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
if ((sizeof(sector_t) > 4) &&
(EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_HURD)))
if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_HURD))
ei->i_file_acl |=
((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
if (!S_ISREG(inode->i_mode)) {
@ -2781,9 +2780,8 @@ static int ext4_do_update_inode(handle_t *handle,
raw_inode->i_frag = ei->i_frag_no;
raw_inode->i_fsize = ei->i_frag_size;
#endif
if ((sizeof(sector_t) > 4) &&
(EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_HURD)))
if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_HURD))
raw_inode->i_file_acl_high =
cpu_to_le16(ei->i_file_acl >> 32);
raw_inode->i_file_acl = cpu_to_le32(ei->i_file_acl);