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Date: Fri, 09 May 2008 11:40:12 -0500
From: "Jose R. Santos" <jrs@...ibm.com>
To: "Jose R. Santos" <jrs@...ibm.com>, "Theodore Ts'o" <tytso@....edu>,
linux-ext4@...r.kernel.org
Subject: [RFC PATCH 7/9][e2fsprogs] Add new blk64_t handling inline functions
From: Jose R. Santos <jrs@...ibm.com>
Add new blk64_t handling inline functions
Introduce inline fuctions to handle blk64_t and low/high values in
super blocks and inodes.
Signed-off-by: Jose R. Santos <jrs@...ibm.com>
--
lib/ext2fs/ext2fs.h | 91 +++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 84 insertions(+), 7 deletions(-)
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index f578c19..ed99901 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1135,10 +1135,21 @@ extern void ext2fs_mark_ib_dirty(ext2_filsys fs);
extern void ext2fs_mark_bb_dirty(ext2_filsys fs);
extern int ext2fs_test_ib_dirty(ext2_filsys fs);
extern int ext2fs_test_bb_dirty(ext2_filsys fs);
+extern int ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk);
extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino);
+extern blk64_t ext2fs_blocks_count(ext2_filsys fs);
+extern void ext2_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2_r_blocks_count(ext2_filsys fs);
+extern void ext2_r_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2_free_blocks_count(ext2_filsys fs);
+extern void ext2_free_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
extern blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group);
+extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
extern blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group);
+extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
+ struct ext2_inode *inode);
extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
@@ -1299,12 +1310,17 @@ _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
/*
* Return the group # of a block
*/
-_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
+_INLINE_ int ext2fs_group_of_blk2(ext2_filsys fs, blk64_t blk)
{
return (blk - fs->super->s_first_data_block) /
fs->super->s_blocks_per_group;
}
+_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
+{
+ return ext2fs_group_of_blk2(fs, blk);
+}
+
/*
* Return the group # of an inode number
*/
@@ -1313,31 +1329,91 @@ _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
return (ino - 1) / fs->super->s_inodes_per_group;
}
+_INLINE_ blk64_t ext2fs_blocks_count(ext2_filsys fs)
+{
+ return fs->super->s_blocks_count |
+ (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
+ (__u64) fs->super->s_blocks_count_hi << 32 : 0);
+}
+
+_INLINE_ void ext2_blocks_count_set(ext2_filsys fs, blk64_t blk)
+{
+ fs->super->s_blocks_count = blk;
+ if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
+ fs->super->s_blocks_count_hi = (__u64) blk >> 32;
+}
+
+_INLINE_ blk64_t ext2_r_blocks_count(ext2_filsys fs)
+{
+ return fs->super->s_r_blocks_count |
+ (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
+ (__u64) fs->super->s_r_blocks_count_hi << 32 : 0);
+}
+
+_INLINE_ void ext2_r_blocks_count_set(ext2_filsys fs, blk64_t blk)
+{
+ fs->super->s_r_blocks_count = blk;
+ if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
+ fs->super->s_r_blocks_count_hi = (__u64) blk >> 32;
+}
+
+_INLINE_ blk64_t ext2_free_blocks_count(ext2_filsys fs)
+{
+ return fs->super->s_free_blocks_count |
+ (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
+ (__u64) fs->super->s_free_blocks_hi << 32 : 0);
+}
+
+_INLINE_ void ext2_free_blocks_count_set(ext2_filsys fs, blk64_t blk)
+{
+ fs->super->s_free_blocks_count = blk;
+ if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
+ fs->super->s_free_blocks_hi = (__u64) blk >> 32;
+}
+
/*
* Return the first block (inclusive) in a group
*/
-_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
+_INLINE_ blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group)
{
return fs->super->s_first_data_block +
(group * fs->super->s_blocks_per_group);
}
+_INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
+{
+ return ext2fs_group_first_block2(fs, group);
+}
+
/*
* Return the last block (inclusive) in a group
*/
-_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
+_INLINE_ blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group)
{
return (group == fs->group_desc_count - 1 ?
- fs->super->s_blocks_count - 1 :
- ext2fs_group_first_block(fs, group) +
+ ext2fs_blocks_count(fs) - 1 :
+ ext2fs_group_first_block2(fs, group) +
(fs->super->s_blocks_per_group - 1));
}
+_INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
+{
+ return ext2fs_group_last_block2(fs, group);
+}
+
+_INLINE_ blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
+ struct ext2_inode *inode)
+{
+ return (inode->i_blocks |
+ (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
+ (__u64)inode->osd2.linux2.l_i_blocks_hi << 32 : 0)) -
+ (inode->i_file_acl ? fs->blocksize >> 9 : 0);
+}
+
_INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode)
{
- return inode->i_blocks -
- (inode->i_file_acl ? fs->blocksize >> 9 : 0);
+ return ext2fs_inode_data_blocks2(fs, inode);
}
/*
@@ -1349,6 +1425,7 @@ _INLINE_ unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b)
return 0;
return ((a - 1) / b) + 1;
}
+
#undef _INLINE_
#endif
--
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