static inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg);
static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe);
static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl);
-static int ocfs2_block_group_fill(struct ocfs2_journal_handle *handle,
+static int ocfs2_block_group_fill(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *bg_bh,
u64 group_blkno,
struct inode *alloc_inode,
struct buffer_head *bh);
-static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
- struct ocfs2_alloc_context *ac);
-
static int ocfs2_cluster_group_search(struct inode *inode,
struct buffer_head *group_bh,
u32 bits_wanted, u32 min_bits,
struct buffer_head *group_bh,
u32 bits_wanted, u32 min_bits,
u16 *bit_off, u16 *bits_found);
-static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
- u32 bits_wanted,
- u32 min_bits,
- u16 *bit_off,
- unsigned int *num_bits,
- u64 *bg_blkno);
static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
+ handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
u64 *bg_blkno);
static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh,
int nr);
-static inline int ocfs2_block_group_set_bits(struct ocfs2_journal_handle *handle,
+static inline int ocfs2_block_group_set_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
unsigned int bit_off,
unsigned int num_bits);
-static inline int ocfs2_block_group_clear_bits(struct ocfs2_journal_handle *handle,
+static inline int ocfs2_block_group_clear_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
unsigned int bit_off,
unsigned int num_bits);
-static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
+static int ocfs2_relink_block_group(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *fe_bh,
struct buffer_head *bg_bh,
u16 chain);
static inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg,
u32 wanted);
-static int ocfs2_free_suballoc_bits(struct ocfs2_journal_handle *handle,
+static int ocfs2_free_suballoc_bits(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *alloc_bh,
unsigned int start_bit,
void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac)
{
- if (ac->ac_inode)
- iput(ac->ac_inode);
+ struct inode *inode = ac->ac_inode;
+
+ if (inode) {
+ if (ac->ac_which != OCFS2_AC_USE_LOCAL)
+ ocfs2_meta_unlock(inode, 1);
+
+ mutex_unlock(&inode->i_mutex);
+
+ iput(inode);
+ }
if (ac->ac_bh)
brelse(ac->ac_bh);
kfree(ac);
return 0;
}
-static int ocfs2_block_group_fill(struct ocfs2_journal_handle *handle,
+static int ocfs2_block_group_fill(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *bg_bh,
u64 group_blkno,
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
struct ocfs2_chain_list *cl;
struct ocfs2_alloc_context *ac = NULL;
- struct ocfs2_journal_handle *handle = NULL;
+ handle_t *handle = NULL;
u32 bit_off, num_bits;
u16 alloc_rec;
u64 bg_blkno;
mlog_entry_void();
- handle = ocfs2_alloc_handle(osb);
- if (!handle) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
-
cl = &fe->id2.i_chain;
status = ocfs2_reserve_clusters(osb,
- handle,
le16_to_cpu(cl->cl_cpg),
&ac);
if (status < 0) {
credits = ocfs2_calc_group_alloc_credits(osb->sb,
le16_to_cpu(cl->cl_cpg));
- handle = ocfs2_start_trans(osb, handle, credits);
+ handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
status = 0;
bail:
if (handle)
- ocfs2_commit_trans(handle);
+ ocfs2_commit_trans(osb, handle);
if (ac)
ocfs2_free_alloc_context(ac);
}
static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
- struct ocfs2_alloc_context *ac)
+ struct ocfs2_alloc_context *ac,
+ int type,
+ u32 slot)
{
int status;
u32 bits_wanted = ac->ac_bits_wanted;
- struct inode *alloc_inode = ac->ac_inode;
+ struct inode *alloc_inode;
struct buffer_head *bh = NULL;
- struct ocfs2_journal_handle *handle = ac->ac_handle;
struct ocfs2_dinode *fe;
u32 free_bits;
mlog_entry_void();
- BUG_ON(handle->flags & OCFS2_HANDLE_STARTED);
+ alloc_inode = ocfs2_get_system_file_inode(osb, type, slot);
+ if (!alloc_inode) {
+ mlog_errno(-EINVAL);
+ return -EINVAL;
+ }
+
+ mutex_lock(&alloc_inode->i_mutex);
- ocfs2_handle_add_inode(handle, alloc_inode);
- status = ocfs2_meta_lock(alloc_inode, handle, &bh, 1);
+ status = ocfs2_meta_lock(alloc_inode, &bh, 1);
if (status < 0) {
+ mutex_unlock(&alloc_inode->i_mutex);
+ iput(alloc_inode);
+
mlog_errno(status);
- goto bail;
+ return status;
}
+ ac->ac_inode = alloc_inode;
+
fe = (struct ocfs2_dinode *) bh->b_data;
if (!OCFS2_IS_VALID_DINODE(fe)) {
OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe);
}
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
struct ocfs2_dinode *fe,
struct ocfs2_alloc_context **ac)
{
int status;
- struct inode *alloc_inode = NULL;
+ u32 slot;
- *ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
+ *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
status = -ENOMEM;
mlog_errno(status);
}
(*ac)->ac_bits_wanted = ocfs2_extend_meta_needed(fe);
- (*ac)->ac_handle = handle;
(*ac)->ac_which = OCFS2_AC_USE_META;
#ifndef OCFS2_USE_ALL_METADATA_SUBALLOCATORS
- alloc_inode = ocfs2_get_system_file_inode(osb,
- EXTENT_ALLOC_SYSTEM_INODE,
- 0);
+ slot = 0;
#else
- alloc_inode = ocfs2_get_system_file_inode(osb,
- EXTENT_ALLOC_SYSTEM_INODE,
- osb->slot_num);
+ slot = osb->slot_num;
#endif
- if (!alloc_inode) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
- (*ac)->ac_inode = igrab(alloc_inode);
(*ac)->ac_group_search = ocfs2_block_group_search;
- status = ocfs2_reserve_suballoc_bits(osb, (*ac));
+ status = ocfs2_reserve_suballoc_bits(osb, (*ac),
+ EXTENT_ALLOC_SYSTEM_INODE, slot);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
*ac = NULL;
}
- if (alloc_inode)
- iput(alloc_inode);
-
mlog_exit(status);
return status;
}
int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
struct ocfs2_alloc_context **ac)
{
int status;
- struct inode *alloc_inode = NULL;
- *ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
+ *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
status = -ENOMEM;
mlog_errno(status);
}
(*ac)->ac_bits_wanted = 1;
- (*ac)->ac_handle = handle;
(*ac)->ac_which = OCFS2_AC_USE_INODE;
- alloc_inode = ocfs2_get_system_file_inode(osb,
- INODE_ALLOC_SYSTEM_INODE,
- osb->slot_num);
- if (!alloc_inode) {
- status = -ENOMEM;
- mlog_errno(status);
- goto bail;
- }
-
- (*ac)->ac_inode = igrab(alloc_inode);
(*ac)->ac_group_search = ocfs2_block_group_search;
- status = ocfs2_reserve_suballoc_bits(osb, *ac);
+ status = ocfs2_reserve_suballoc_bits(osb, *ac,
+ INODE_ALLOC_SYSTEM_INODE,
+ osb->slot_num);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
*ac = NULL;
}
- if (alloc_inode)
- iput(alloc_inode);
-
mlog_exit(status);
return status;
}
{
int status;
- ac->ac_inode = ocfs2_get_system_file_inode(osb,
- GLOBAL_BITMAP_SYSTEM_INODE,
- OCFS2_INVALID_SLOT);
- if (!ac->ac_inode) {
- status = -EINVAL;
- mlog(ML_ERROR, "Could not get bitmap inode!\n");
- goto bail;
- }
ac->ac_which = OCFS2_AC_USE_MAIN;
ac->ac_group_search = ocfs2_cluster_group_search;
- status = ocfs2_reserve_suballoc_bits(osb, ac);
- if (status < 0 && status != -ENOSPC)
+ status = ocfs2_reserve_suballoc_bits(osb, ac,
+ GLOBAL_BITMAP_SYSTEM_INODE,
+ OCFS2_INVALID_SLOT);
+ if (status < 0 && status != -ENOSPC) {
mlog_errno(status);
+ goto bail;
+ }
+
bail:
return status;
}
* use so we figure it out for them, but unfortunately this clutters
* things a bit. */
int ocfs2_reserve_clusters(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
u32 bits_wanted,
struct ocfs2_alloc_context **ac)
{
mlog_entry_void();
- BUG_ON(!handle);
-
- *ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
+ *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
status = -ENOMEM;
mlog_errno(status);
}
(*ac)->ac_bits_wanted = bits_wanted;
- (*ac)->ac_handle = handle;
status = -ENOSPC;
if (ocfs2_alloc_should_use_local(osb, bits_wanted)) {
status = ocfs2_reserve_local_alloc_bits(osb,
- handle,
bits_wanted,
*ac);
if ((status < 0) && (status != -ENOSPC)) {
return status;
}
-static inline int ocfs2_block_group_set_bits(struct ocfs2_journal_handle *handle,
+static inline int ocfs2_block_group_set_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
return best;
}
-static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
+static int ocfs2_relink_block_group(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *fe_bh,
struct buffer_head *bg_bh,
return ret;
}
+static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
+ handle_t *handle,
+ struct buffer_head *di_bh,
+ u32 num_bits,
+ u16 chain)
+{
+ int ret;
+ u32 tmp_used;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
+ struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &di->id2.i_chain;
+
+ ret = ocfs2_journal_access(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ tmp_used = le32_to_cpu(di->id1.bitmap1.i_used);
+ di->id1.bitmap1.i_used = cpu_to_le32(num_bits + tmp_used);
+ le32_add_cpu(&cl->cl_recs[chain].c_free, -num_bits);
+
+ ret = ocfs2_journal_dirty(handle, di_bh);
+ if (ret < 0)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
+static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
+ handle_t *handle,
+ u32 bits_wanted,
+ u32 min_bits,
+ u16 *bit_off,
+ unsigned int *num_bits,
+ u64 gd_blkno,
+ u16 *bits_left)
+{
+ int ret;
+ u16 found;
+ struct buffer_head *group_bh = NULL;
+ struct ocfs2_group_desc *gd;
+ struct inode *alloc_inode = ac->ac_inode;
+
+ ret = ocfs2_read_block(OCFS2_SB(alloc_inode->i_sb), gd_blkno,
+ &group_bh, OCFS2_BH_CACHED, alloc_inode);
+ if (ret < 0) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ gd = (struct ocfs2_group_desc *) group_bh->b_data;
+ if (!OCFS2_IS_VALID_GROUP_DESC(gd)) {
+ OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, gd);
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits,
+ bit_off, &found);
+ if (ret < 0) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out;
+ }
+
+ *num_bits = found;
+
+ ret = ocfs2_alloc_dinode_update_counts(alloc_inode, handle, ac->ac_bh,
+ *num_bits,
+ le16_to_cpu(gd->bg_chain));
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_block_group_set_bits(handle, alloc_inode, gd, group_bh,
+ *bit_off, *num_bits);
+ if (ret < 0)
+ mlog_errno(ret);
+
+ *bits_left = le16_to_cpu(gd->bg_free_bits_count);
+
+out:
+ brelse(group_bh);
+
+ return ret;
+}
+
static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
+ handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
unsigned int *num_bits,
- u64 *bg_blkno)
+ u64 *bg_blkno,
+ u16 *bits_left)
{
int status;
u16 chain, tmp_bits;
u32 tmp_used;
u64 next_group;
- struct ocfs2_journal_handle *handle = ac->ac_handle;
struct inode *alloc_inode = ac->ac_inode;
struct buffer_head *group_bh = NULL;
struct buffer_head *prev_group_bh = NULL;
(unsigned long long)fe->i_blkno);
*bg_blkno = le64_to_cpu(bg->bg_blkno);
+ *bits_left = le16_to_cpu(bg->bg_free_bits_count);
bail:
if (group_bh)
brelse(group_bh);
/* will give out up to bits_wanted contiguous bits. */
static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
+ handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
{
int status;
u16 victim, i;
+ u16 bits_left = 0;
+ u64 hint_blkno = ac->ac_last_group;
struct ocfs2_chain_list *cl;
struct ocfs2_dinode *fe;
goto bail;
}
+ if (hint_blkno) {
+ /* Attempt to short-circuit the usual search mechanism
+ * by jumping straight to the most recently used
+ * allocation group. This helps us mantain some
+ * contiguousness across allocations. */
+ status = ocfs2_search_one_group(ac, handle, bits_wanted,
+ min_bits, bit_off, num_bits,
+ hint_blkno, &bits_left);
+ if (!status) {
+ /* Be careful to update *bg_blkno here as the
+ * caller is expecting it to be filled in, and
+ * ocfs2_search_one_group() won't do that for
+ * us. */
+ *bg_blkno = hint_blkno;
+ goto set_hint;
+ }
+ if (status < 0 && status != -ENOSPC) {
+ mlog_errno(status);
+ goto bail;
+ }
+ }
+
cl = (struct ocfs2_chain_list *) &fe->id2.i_chain;
victim = ocfs2_find_victim_chain(cl);
ac->ac_chain = victim;
ac->ac_allow_chain_relink = 1;
- status = ocfs2_search_chain(ac, bits_wanted, min_bits, bit_off,
- num_bits, bg_blkno);
+ status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, bit_off,
+ num_bits, bg_blkno, &bits_left);
if (!status)
- goto bail;
+ goto set_hint;
if (status < 0 && status != -ENOSPC) {
mlog_errno(status);
goto bail;
continue;
ac->ac_chain = i;
- status = ocfs2_search_chain(ac, bits_wanted, min_bits,
- bit_off, num_bits,
- bg_blkno);
+ status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits,
+ bit_off, num_bits, bg_blkno,
+ &bits_left);
if (!status)
break;
if (status < 0 && status != -ENOSPC) {
goto bail;
}
}
-bail:
+set_hint:
+ if (status != -ENOSPC) {
+ /* If the next search of this group is not likely to
+ * yield a suitable extent, then we reset the last
+ * group hint so as to not waste a disk read */
+ if (bits_left < min_bits)
+ ac->ac_last_group = 0;
+ else
+ ac->ac_last_group = *bg_blkno;
+ }
+
+bail:
mlog_exit(status);
return status;
}
int ocfs2_claim_metadata(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
+ handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u16 *suballoc_bit_start,
BUG_ON(!ac);
BUG_ON(ac->ac_bits_wanted < (ac->ac_bits_given + bits_wanted));
BUG_ON(ac->ac_which != OCFS2_AC_USE_META);
- BUG_ON(ac->ac_handle != handle);
status = ocfs2_claim_suballoc_bits(osb,
ac,
+ handle,
bits_wanted,
1,
suballoc_bit_start,
}
int ocfs2_claim_new_inode(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
+ handle_t *handle,
struct ocfs2_alloc_context *ac,
u16 *suballoc_bit,
u64 *fe_blkno)
BUG_ON(ac->ac_bits_given != 0);
BUG_ON(ac->ac_bits_wanted != 1);
BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE);
- BUG_ON(ac->ac_handle != handle);
status = ocfs2_claim_suballoc_bits(osb,
ac,
+ handle,
1,
1,
suballoc_bit,
* of any size.
*/
int ocfs2_claim_clusters(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
+ handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 min_clusters,
u32 *cluster_start,
{
int status;
unsigned int bits_wanted = ac->ac_bits_wanted - ac->ac_bits_given;
- u64 bg_blkno;
+ u64 bg_blkno = 0;
u16 bg_bit_off;
mlog_entry_void();
BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL
&& ac->ac_which != OCFS2_AC_USE_MAIN);
- BUG_ON(ac->ac_handle != handle);
if (ac->ac_which == OCFS2_AC_USE_LOCAL) {
status = ocfs2_claim_local_alloc_bits(osb,
status = ocfs2_claim_suballoc_bits(osb,
ac,
+ handle,
bits_wanted,
min_clusters,
&bg_bit_off,
return status;
}
-static inline int ocfs2_block_group_clear_bits(struct ocfs2_journal_handle *handle,
+static inline int ocfs2_block_group_clear_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
/*
* expects the suballoc inode to already be locked.
*/
-static int ocfs2_free_suballoc_bits(struct ocfs2_journal_handle *handle,
+static int ocfs2_free_suballoc_bits(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *alloc_bh,
unsigned int start_bit,
return group;
}
-int ocfs2_free_dinode(struct ocfs2_journal_handle *handle,
+int ocfs2_free_dinode(handle_t *handle,
struct inode *inode_alloc_inode,
struct buffer_head *inode_alloc_bh,
struct ocfs2_dinode *di)
inode_alloc_bh, bit, bg_blkno, 1);
}
-int ocfs2_free_extent_block(struct ocfs2_journal_handle *handle,
+int ocfs2_free_extent_block(handle_t *handle,
struct inode *eb_alloc_inode,
struct buffer_head *eb_alloc_bh,
struct ocfs2_extent_block *eb)
bit, bg_blkno, 1);
}
-int ocfs2_free_clusters(struct ocfs2_journal_handle *handle,
+int ocfs2_free_clusters(handle_t *handle,
struct inode *bitmap_inode,
struct buffer_head *bitmap_bh,
u64 start_blk,
projects / linux-2.6-omap-h63xx.git / blobdiff