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| author |   Theodore Ts'o <tytso@mit.edu> | 2011-09-09 19:08:51 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-09-09 19:08:51 -0400 |
| commit | 021b65bb1e4e4b625c80bbb82651e5e155721ef3 (patch) | |
| tree | e1826a0ec395ac2acf46c43113f2c6a64a5165d0 /fs/ext4/balloc.c | |
| parent | ext4: enable mounting bigalloc as read/write (diff) | |
| download | linux-dev-021b65bb1e4e4b625c80bbb82651e5e155721ef3.tar.xz linux-dev-021b65bb1e4e4b625c80bbb82651e5e155721ef3.zip | |
ext4: Rename ext4_free_blks_{count,set}() to refer to clusters
The field bg_free_blocks_count_{lo,high} in the block group
descriptor has been repurposed to hold the number of free clusters for
bigalloc functions. So rename the functions so it makes it easier to
read and audit the block allocation and block freeing code.
Note: at this point in bigalloc development we doesn't support
online resize, so this also makes it really obvious all of the places
we need to fix up to add support for online resize.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/balloc.c')
| -rw-r--r-- | fs/ext4/balloc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index bf42b3219e3c..84dc3d62b40c 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -168,7 +168,7 @@ void ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh, * essentially implementing a per-group read-only flag. */ if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) { ext4_error(sb, "Checksum bad for group %u", block_group); - ext4_free_blks_set(sb, gdp, 0); + ext4_free_group_clusters_set(sb, gdp, 0); ext4_free_inodes_set(sb, gdp, 0); ext4_itable_unused_set(sb, gdp, 0); memset(bh->b_data, 0xff, sb->s_blocksize); @@ -550,7 +550,7 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb) gdp = ext4_get_group_desc(sb, i, NULL); if (!gdp) continue; - desc_count += ext4_free_blks_count(sb, gdp); + desc_count += ext4_free_group_clusters(sb, gdp); brelse(bitmap_bh); bitmap_bh = ext4_read_block_bitmap(sb, i); if (bitmap_bh == NULL) @@ -558,7 +558,7 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb) x = ext4_count_free(bitmap_bh, sb->s_blocksize); printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n", - i, ext4_free_blks_count(sb, gdp), x); + i, ext4_free_group_clusters(sb, gdp), x); bitmap_count += x; } brelse(bitmap_bh); @@ -572,7 +572,7 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb) gdp = ext4_get_group_desc(sb, i, NULL); if (!gdp) continue; - desc_count += ext4_free_blks_count(sb, gdp); + desc_count += ext4_free_group_clusters(sb, gdp); } return desc_count; |