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Message-ID: <20080509163958.15484.88576.stgit@gara>
Date: Fri, 09 May 2008 11:39:58 -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 5/9][e2fsprogs] Add 64-bit alloc interface.
From: Jose R. Santos <jrs@...ibm.com>
Add 64-bit alloc interface.
Add new ext2fs_new_block2(), ext2fs_get_free_blocks2() and
ext2fs_alloc_block2() that take and return blk64_t.
Signed-off-by: Jose R. Santos <jrs@...ibm.com>
--
lib/ext2fs/alloc.c | 59 +++++++++++++++++++++++++++++++++++++++++----------
lib/ext2fs/ext2fs.h | 8 +++++++
2 files changed, 55 insertions(+), 12 deletions(-)
diff --git a/lib/ext2fs/alloc.c b/lib/ext2fs/alloc.c
index 65f3ea1..3dda7f4 100644
--- a/lib/ext2fs/alloc.c
+++ b/lib/ext2fs/alloc.c
@@ -73,10 +73,10 @@ errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir,
* Stupid algorithm --- we now just search forward starting from the
* goal. Should put in a smarter one someday....
*/
-errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
- ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+ ext2fs_block_bitmap map, blk64_t *ret)
{
- blk_t i;
+ blk64_t i;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
@@ -88,6 +88,7 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
goal = fs->super->s_first_data_block;
i = goal;
do {
+ /* FIXME: Not blk64_t clean */
if (!ext2fs_fast_test_block_bitmap(map, i)) {
*ret = i;
return 0;
@@ -99,15 +100,26 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
return EXT2_ET_BLOCK_ALLOC_FAIL;
}
+errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
+ ext2fs_block_bitmap map, blk_t *ret)
+{
+ errcode_t retval;
+ blk64_t val;
+ retval = ext2fs_new_block2(fs, goal, map, &val);
+ if (!retval)
+ *ret = (blk_t) val;
+ return retval;
+}
+
/*
* This function zeros out the allocated block, and updates all of the
* appropriate filesystem records.
*/
-errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
- char *block_buf, blk_t *ret)
+errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+ char *block_buf, blk64_t *ret)
{
errcode_t retval;
- blk_t block;
+ blk64_t block;
char *buf = 0;
if (!block_buf) {
@@ -119,20 +131,21 @@ errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
memset(block_buf, 0, fs->blocksize);
if (!fs->block_map) {
+ /* FIXME: Not blk64_t clean */
retval = ext2fs_read_block_bitmap(fs);
if (retval)
goto fail;
}
- retval = ext2fs_new_block(fs, goal, 0, &block);
+ retval = ext2fs_new_block2(fs, goal, 0, &block);
if (retval)
goto fail;
- retval = io_channel_write_blk(fs->io, block, 1, block_buf);
+ retval = io_channel_write_blk64(fs->io, block, 1, block_buf);
if (retval)
goto fail;
- ext2fs_block_alloc_stats(fs, block, +1);
+ ext2fs_block_alloc_stats2(fs, block, 1);
*ret = block;
fail:
@@ -141,10 +154,21 @@ fail:
return retval;
}
-errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
- int num, ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
+ char *block_buf, blk_t *ret)
+{
+ errcode_t retval;
+ blk64_t val;
+ retval = ext2fs_alloc_block2(fs, goal, block_buf, &val);
+ if (!retval)
+ *ret = (blk_t) val;
+ return retval;
+}
+
+errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, blk64_t finish,
+ int num, ext2fs_block_bitmap map, blk64_t *ret)
{
- blk_t b = start;
+ blk64_t b = start;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
@@ -161,6 +185,7 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
do {
if (b+num-1 > fs->super->s_blocks_count)
b = fs->super->s_first_data_block;
+ /* FIXME: Not blk64_t clean */
if (ext2fs_fast_test_block_bitmap_range(map, b, num)) {
*ret = b;
return 0;
@@ -170,3 +195,13 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
return EXT2_ET_BLOCK_ALLOC_FAIL;
}
+errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
+ int num, ext2fs_block_bitmap map, blk_t *ret)
+{
+ errcode_t retval;
+ blk64_t val;
+ retval = ext2fs_get_free_blocks2(fs, start, finish, num, map, &val);
+ if(!retval)
+ *ret = (blk_t) val;
+ return retval;
+}
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 8107d94..80ccfd9 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -537,12 +537,20 @@ extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
ext2fs_inode_bitmap map, ext2_ino_t *ret);
extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
ext2fs_block_bitmap map, blk_t *ret);
+extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+ ext2fs_block_bitmap map, blk64_t *ret);
extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
blk_t finish, int num,
ext2fs_block_bitmap map,
blk_t *ret);
+extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
+ blk64_t finish, int num,
+ ext2fs_block_bitmap map,
+ blk64_t *ret);
extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
char *block_buf, blk_t *ret);
+extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+ char *block_buf, blk64_t *ret);
/* alloc_sb.c */
extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
--
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