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ocfs2: ocfs2_group_bitmap_size has to handle old volume.

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ocfs2_group_bitmap_size has to handle the case when the
volume don't have discontiguous block group support. So
pass the feature_incompat in and check it.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
This commit is contained in:
Tao Ma 2010-04-13 14:38:06 +08:00
parent 4711954eaa
commit 8571882c21
5 changed files with 34 additions and 17 deletions
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2
fs/ocfs2/localalloc.c
View File

@ -122,7 +122,7 @@ unsigned int ocfs2_la_default_mb(struct ocfs2_super *osb)
struct super_block *sb = osb->sb;
gd_mb = ocfs2_clusters_to_megabytes(osb->sb,
8 * ocfs2_group_bitmap_size(sb, 0));
8 * ocfs2_group_bitmap_size(sb, 0, osb->s_feature_incompat));
/*
* This takes care of files systems with very small group

37
fs/ocfs2/ocfs2_fs.h
View File

@ -1338,15 +1338,21 @@ static inline u16 ocfs2_local_alloc_size(struct super_block *sb)
}
static inline int ocfs2_group_bitmap_size(struct super_block *sb,
int suballocator)
int suballocator,
u32 feature_incompat)
{
int size;
int size = sb->s_blocksize -
offsetof(struct ocfs2_group_desc, bg_bitmap);
if (suballocator)
/*
* The cluster allocator uses the entire block. Suballocators have
* never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older
* code expects bg_size set to the maximum. Thus we must keep
* bg_size as-is unless discontig_bg is enabled.
*/
if (suballocator &&
(feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG))
size = OCFS2_MAX_BG_BITMAP_SIZE;
else
size = sb->s_blocksize -
offsetof(struct ocfs2_group_desc, bg_bitmap);
return size;
}
@ -1479,15 +1485,22 @@ static inline int ocfs2_local_alloc_size(int blocksize)
return size;
}
static inline int ocfs2_group_bitmap_size(int blocksize, int suballocator)
static inline int ocfs2_group_bitmap_size(int blocksize,
int suballocator,
uint32_t feature_incompat)
{
int size;
int size = sb->s_blocksize -
offsetof(struct ocfs2_group_desc, bg_bitmap);
if (suballocator)
/*
* The cluster allocator uses the entire block. Suballocators have
* never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older
* code expects bg_size set to the maximum. Thus we must keep
* bg_size as-is unless discontig_bg is enabled.
*/
if (suballocator &&
(feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG))
size = OCFS2_MAX_BG_BITMAP_SIZE;
else
size = blocksize -
offsetof(struct ocfs2_group_desc, bg_bitmap);
return size;
}

6
fs/ocfs2/resize.c
View File

@ -315,7 +315,8 @@ int ocfs2_group_extend(struct inode * inode, int new_clusters)
BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb, 0) * 8) {
ocfs2_group_bitmap_size(osb->sb, 0,
osb->s_feature_incompat) * 8) {
mlog(ML_ERROR, "The disk is too old and small. "
"Force to do offline resize.");
ret = -EINVAL;
@ -496,7 +497,8 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb, 0) * 8) {
ocfs2_group_bitmap_size(osb->sb, 0,
osb->s_feature_incompat) * 8) {
mlog(ML_ERROR, "The disk is too old and small."
" Force to do offline resize.");
ret = -EINVAL;

3
fs/ocfs2/suballoc.c
View File

@ -391,7 +391,8 @@ static int ocfs2_block_group_fill(handle_t *handle,
memset(bg, 0, sb->s_blocksize);
strcpy(bg->bg_signature, OCFS2_GROUP_DESC_SIGNATURE);
bg->bg_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation);
bg->bg_size = cpu_to_le16(ocfs2_group_bitmap_size(sb, 1));
bg->bg_size = cpu_to_le16(ocfs2_group_bitmap_size(sb, 1,
osb->s_feature_incompat));
bg->bg_chain = cpu_to_le16(my_chain);
bg->bg_next_group = cl->cl_recs[my_chain].c_blkno;
bg->bg_parent_dinode = cpu_to_le64(OCFS2_I(alloc_inode)->ip_blkno);

3
fs/ocfs2/super.c
View File

@ -2277,7 +2277,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
iput(inode);
osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0) * 8;
osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
osb->s_feature_incompat) * 8;
status = ocfs2_init_slot_info(osb);
if (status < 0) {