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Date: Fri, 7 Aug 2015 12:51:11 +0200
From: Jan Kara <jack@...e.com>
To: linux-ext4@...r.kernel.org
Cc: Ted Tso <tytso@....edu>,
"Darrick J. Wong" <darrick.wong@...cle.com>,
Jan Kara <jack@...e.cz>
Subject: [PATCH 01/19] ext2fs: Move function to initialize uninitialized bitmaps to libext2fs
From: Jan Kara <jack@...e.cz>
We will need to initialize uninitialized bitmaps both from resize2fs and
tune2fs. Move the function that does this to libext2fs so that code can
be shared.
Signed-off-by: Jan Kara <jack@...e.cz>
---
lib/ext2fs/bitops.h | 1 +
lib/ext2fs/gen_bitmap64.c | 33 +++++++++++++++++++++++++++++++++
resize/resize2fs.c | 38 ++------------------------------------
3 files changed, 36 insertions(+), 36 deletions(-)
diff --git a/lib/ext2fs/bitops.h b/lib/ext2fs/bitops.h
index bc596087d2a7..0699a00fcec4 100644
--- a/lib/ext2fs/bitops.h
+++ b/lib/ext2fs/bitops.h
@@ -211,6 +211,7 @@ extern errcode_t ext2fs_find_first_zero_generic_bmap(ext2fs_generic_bitmap bitma
extern errcode_t ext2fs_find_first_set_generic_bmap(ext2fs_generic_bitmap bitmap,
__u64 start, __u64 end,
__u64 *out);
+extern void ext2fs_init_uninit_block_bitmaps(ext2_filsys fs);
/*
* The inline routines themselves...
diff --git a/lib/ext2fs/gen_bitmap64.c b/lib/ext2fs/gen_bitmap64.c
index 3fc734981c18..34122cfa8901 100644
--- a/lib/ext2fs/gen_bitmap64.c
+++ b/lib/ext2fs/gen_bitmap64.c
@@ -905,3 +905,36 @@ errcode_t ext2fs_find_first_set_generic_bmap(ext2fs_generic_bitmap bitmap,
return ENOENT;
}
+
+/*
+ * Initialize all unintialized block bitmaps
+ */
+void ext2fs_init_uninit_block_bitmaps(ext2_filsys fs)
+{
+ blk64_t blk, lblk;
+ dgrp_t g;
+ int i;
+
+ if (!ext2fs_has_group_desc_csum(fs))
+ return;
+
+ for (g = 0; g < fs->group_desc_count; g++) {
+ if (!(ext2fs_bg_flags_test(fs, g, EXT2_BG_BLOCK_UNINIT)))
+ continue;
+
+ blk = ext2fs_group_first_block2(fs, g);
+ lblk = ext2fs_group_last_block2(fs, g);
+ ext2fs_unmark_block_bitmap_range2(fs->block_map, blk,
+ lblk - blk + 1);
+
+ ext2fs_reserve_super_and_bgd(fs, g, fs->block_map);
+ ext2fs_mark_block_bitmap2(fs->block_map,
+ ext2fs_block_bitmap_loc(fs, g));
+ ext2fs_mark_block_bitmap2(fs->block_map,
+ ext2fs_inode_bitmap_loc(fs, g));
+ for (i = 0, blk = ext2fs_inode_table_loc(fs, g);
+ i < (unsigned int) fs->inode_blocks_per_group;
+ i++, blk++)
+ ext2fs_mark_block_bitmap2(fs->block_map, blk);
+ }
+}
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index 041ff75029b2..02f7d754d316 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -41,7 +41,6 @@
#define RESIZE2FS_DEBUG
#endif
-static void fix_uninit_block_bitmaps(ext2_filsys fs);
static errcode_t adjust_superblock(ext2_resize_t rfs, blk64_t new_size);
static errcode_t blocks_to_move(ext2_resize_t rfs);
static errcode_t block_mover(ext2_resize_t rfs);
@@ -119,7 +118,7 @@ errcode_t resize_fs(ext2_filsys fs, blk64_t *new_size, int flags,
ext2fs_flush(fs);
init_resource_track(&rtrack, "fix_uninit_block_bitmaps 1", fs->io);
- fix_uninit_block_bitmaps(fs);
+ ext2fs_init_uninit_block_bitmaps(fs);
print_resource_track(rfs, &rtrack, fs->io);
retval = ext2fs_dup_handle(fs, &rfs->new_fs);
if (retval)
@@ -150,7 +149,7 @@ errcode_t resize_fs(ext2_filsys fs, blk64_t *new_size, int flags,
print_resource_track(rfs, &rtrack, fs->io);
init_resource_track(&rtrack, "fix_uninit_block_bitmaps 2", fs->io);
- fix_uninit_block_bitmaps(rfs->new_fs);
+ ext2fs_init_uninit_block_bitmaps(rfs->new_fs);
print_resource_track(rfs, &rtrack, fs->io);
/* Clear the block bitmap uninit flag for the last block group */
ext2fs_bg_flags_clear(rfs->new_fs, rfs->new_fs->group_desc_count - 1,
@@ -571,39 +570,6 @@ out:
return retval;
}
-/*
- * Clean up the bitmaps for unitialized bitmaps
- */
-static void fix_uninit_block_bitmaps(ext2_filsys fs)
-{
- blk64_t blk, lblk;
- dgrp_t g;
- int i;
-
- if (!ext2fs_has_group_desc_csum(fs))
- return;
-
- for (g=0; g < fs->group_desc_count; g++) {
- if (!(ext2fs_bg_flags_test(fs, g, EXT2_BG_BLOCK_UNINIT)))
- continue;
-
- blk = ext2fs_group_first_block2(fs, g);
- lblk = ext2fs_group_last_block2(fs, g);
- ext2fs_unmark_block_bitmap_range2(fs->block_map, blk,
- lblk - blk + 1);
-
- ext2fs_reserve_super_and_bgd(fs, g, fs->block_map);
- ext2fs_mark_block_bitmap2(fs->block_map,
- ext2fs_block_bitmap_loc(fs, g));
- ext2fs_mark_block_bitmap2(fs->block_map,
- ext2fs_inode_bitmap_loc(fs, g));
- for (i = 0, blk = ext2fs_inode_table_loc(fs, g);
- i < (unsigned int) fs->inode_blocks_per_group;
- i++, blk++)
- ext2fs_mark_block_bitmap2(fs->block_map, blk);
- }
-}
-
/* --------------------------------------------------------------------
*
* Resize processing, phase 1.
--
2.1.4
--
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