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ocfs2: Allocate inode groups from global_bitmap.

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Inode groups used to be allocated from local alloc file,
but since we want all inodes to be contiguous enough, we
will try to allocate them directly from global_bitmap.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Tao Ma 2009-02-25 00:53:24 +08:00 committed by Mark Fasheh
parent 138211515c
commit 60ca81e82d
1 changed files with 19 additions and 10 deletions
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29
fs/ocfs2/suballoc.c
View file

@ -48,7 +48,8 @@
#include "buffer_head_io.h"
#define NOT_ALLOC_NEW_GROUP 0
#define ALLOC_NEW_GROUP 1
#define ALLOC_NEW_GROUP 0x1
#define ALLOC_GROUPS_FROM_GLOBAL 0x2
#define OCFS2_MAX_INODES_TO_STEAL 1024
@ -64,7 +65,8 @@ static int ocfs2_block_group_fill(handle_t *handle,
static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
struct inode *alloc_inode,
struct buffer_head *bh,
u64 max_block);
u64 max_block,
int flags);
static int ocfs2_cluster_group_search(struct inode *inode,
struct buffer_head *group_bh,
@ -116,6 +118,7 @@ static inline void ocfs2_block_to_cluster_group(struct inode *inode,
u16 *bg_bit_off);
static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb,
u32 bits_wanted, u64 max_block,
int flags,
struct ocfs2_alloc_context **ac);
void ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac)
@ -403,7 +406,8 @@ static inline u16 ocfs2_find_smallest_chain(struct ocfs2_chain_list *cl)
static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
struct inode *alloc_inode,
struct buffer_head *bh,
u64 max_block)
u64 max_block,
int flags)
{
int status, credits;
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
@ -423,7 +427,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
cl = &fe->id2.i_chain;
status = ocfs2_reserve_clusters_with_limit(osb,
le16_to_cpu(cl->cl_cpg),
max_block, &ac);
max_block, flags, &ac);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
@ -531,7 +535,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
int type,
u32 slot,
int alloc_new_group)
int flags)
{
int status;
u32 bits_wanted = ac->ac_bits_wanted;
@ -587,7 +591,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
goto bail;
}
if (alloc_new_group != ALLOC_NEW_GROUP) {
if (!(flags & ALLOC_NEW_GROUP)) {
mlog(0, "Alloc File %u Full: wanted=%u, free_bits=%u, "
"and we don't alloc a new group for it.\n",
slot, bits_wanted, free_bits);
@ -596,7 +600,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
}
status = ocfs2_block_group_alloc(osb, alloc_inode, bh,
ac->ac_max_block);
ac->ac_max_block, flags);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
@ -740,7 +744,9 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
atomic_set(&osb->s_num_inodes_stolen, 0);
status = ocfs2_reserve_suballoc_bits(osb, *ac,
INODE_ALLOC_SYSTEM_INODE,
osb->slot_num, ALLOC_NEW_GROUP);
osb->slot_num,
ALLOC_NEW_GROUP |
ALLOC_GROUPS_FROM_GLOBAL);
if (status >= 0) {
status = 0;
@ -806,6 +812,7 @@ bail:
* things a bit. */
static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb,
u32 bits_wanted, u64 max_block,
int flags,
struct ocfs2_alloc_context **ac)
{
int status;
@ -823,7 +830,8 @@ static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb,
(*ac)->ac_max_block = max_block;
status = -ENOSPC;
if (ocfs2_alloc_should_use_local(osb, bits_wanted)) {
if (!(flags & ALLOC_GROUPS_FROM_GLOBAL) &&
ocfs2_alloc_should_use_local(osb, bits_wanted)) {
status = ocfs2_reserve_local_alloc_bits(osb,
bits_wanted,
*ac);
@ -861,7 +869,8 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb,
u32 bits_wanted,
struct ocfs2_alloc_context **ac)
{
return ocfs2_reserve_clusters_with_limit(osb, bits_wanted, 0, ac);
return ocfs2_reserve_clusters_with_limit(osb, bits_wanted, 0,
ALLOC_NEW_GROUP, ac);
}
/*