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ext4: let setup_new_group_blocks() set multiple bits at a time

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Rename mb_set_bits() to ext4_set_bits() and make it a global function
so that setup_new_group_blocks() can use it.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Yongqiang Yang 2011-07-26 22:05:53 -04:00 committed by Theodore Ts'o
parent 2b79b09d13
commit c3e94d1df9
3 changed files with 17 additions and 18 deletions
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2
fs/ext4/ext4.h
View File

@ -940,6 +940,8 @@ struct ext4_inode_info {
#define ext4_find_next_zero_bit find_next_zero_bit_le
#define ext4_find_next_bit find_next_bit_le
extern void ext4_set_bits(void *bm, int cur, int len);
/*
* Maximal mount counts between two filesystem checks
*/

15
fs/ext4/mballoc.c
View File

@ -1282,7 +1282,7 @@ static void mb_clear_bits(void *bm, int cur, int len)
}
}
static void mb_set_bits(void *bm, int cur, int len)
void ext4_set_bits(void *bm, int cur, int len)
{
__u32 *addr;
@ -1511,7 +1511,7 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex)
}
mb_set_largest_free_order(e4b->bd_sb, e4b->bd_info);
mb_set_bits(EXT4_MB_BITMAP(e4b), ex->fe_start, len0);
ext4_set_bits(EXT4_MB_BITMAP(e4b), ex->fe_start, len0);
mb_check_buddy(e4b);
return ret;
@ -2795,8 +2795,8 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
* We leak some of the blocks here.
*/
ext4_lock_group(sb, ac->ac_b_ex.fe_group);
mb_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,
ac->ac_b_ex.fe_len);
ext4_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,
ac->ac_b_ex.fe_len);
ext4_unlock_group(sb, ac->ac_b_ex.fe_group);
err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
if (!err)
@ -2814,7 +2814,8 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
}
}
#endif
mb_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,ac->ac_b_ex.fe_len);
ext4_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,
ac->ac_b_ex.fe_len);
if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
ext4_free_blks_set(sb, gdp,
@ -3284,7 +3285,7 @@ static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap,
while (n) {
entry = rb_entry(n, struct ext4_free_data, node);
mb_set_bits(bitmap, entry->start_blk, entry->count);
ext4_set_bits(bitmap, entry->start_blk, entry->count);
n = rb_next(n);
}
return;
@ -3326,7 +3327,7 @@ void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
if (unlikely(len == 0))
continue;
BUG_ON(groupnr != group);
mb_set_bits(bitmap, start, len);
ext4_set_bits(bitmap, start, len);
preallocated += len;
count++;
}

18
fs/ext4/resize.c
View File

@ -217,11 +217,6 @@ static int setup_new_group_blocks(struct super_block *sb,
goto exit_journal;
}
if (ext4_bg_has_super(sb, input->group)) {
ext4_debug("mark backup superblock %#04llx (+0)\n", start);
ext4_set_bit(0, bh->b_data);
}
/* Copy all of the GDT blocks into the backup in this group */
for (i = 0, bit = 1, block = start + 1;
i < gdblocks; i++, block++, bit++) {
@ -250,7 +245,6 @@ static int setup_new_group_blocks(struct super_block *sb,
brelse(gdb);
goto exit_bh;
}
ext4_set_bit(bit, bh->b_data);
brelse(gdb);
}
@ -261,8 +255,11 @@ static int setup_new_group_blocks(struct super_block *sb,
GFP_NOFS);
if (err)
goto exit_bh;
for (i = 0, bit = gdblocks + 1; i < reserved_gdb; i++, bit++)
ext4_set_bit(bit, bh->b_data);
if (ext4_bg_has_super(sb, input->group)) {
ext4_debug("mark backup group tables %#04llx (+0)\n", start);
ext4_set_bits(bh->b_data, 0, gdblocks + reserved_gdb + 1);
}
ext4_debug("mark block bitmap %#04llx (+%llu)\n", input->block_bitmap,
input->block_bitmap - start);
@ -278,9 +275,8 @@ static int setup_new_group_blocks(struct super_block *sb,
err = sb_issue_zeroout(sb, block, sbi->s_itb_per_group, GFP_NOFS);
if (err)
goto exit_bh;
for (i = 0, bit = input->inode_table - start;
i < sbi->s_itb_per_group; i++, bit++)
ext4_set_bit(bit, bh->b_data);
ext4_set_bits(bh->b_data, input->inode_table - start,
sbi->s_itb_per_group);
if ((err = extend_or_restart_transaction(handle, 2, bh)))
goto exit_bh;