Commit 60ca81e8 authored by Tao Ma's avatar Tao Ma Committed by Mark Fasheh
Browse files

ocfs2: Allocate inode groups from global_bitmap. 



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: default avatarTao Ma <tao.ma@oracle.com>
Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent 13821151

fs/ocfs2/suballoc.c

+19 −10
Original line number Diff line number Diff line
@@ -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 @@ int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb, 
 * 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);

}



/*