fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / fs / ocfs2 / suballoc.c
index 9d91e66..6dbb117 100644 (file)
@@ -49,7 +49,7 @@
 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,
@@ -59,9 +59,6 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
                                   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,
@@ -72,6 +69,7 @@ static int ocfs2_block_group_search(struct inode *inode,
                                    u16 *bit_off, u16 *bits_found);
 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,
@@ -79,20 +77,20 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
                                     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,
@@ -100,7 +98,7 @@ static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
                                    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,
@@ -120,8 +118,16 @@ static inline void ocfs2_block_to_cluster_group(struct inode *inode,
 
 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);
@@ -190,7 +196,7 @@ static int ocfs2_check_group_descriptor(struct super_block *sb,
        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,
@@ -273,7 +279,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
        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;
@@ -284,16 +290,8 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
 
        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) {
@@ -304,7 +302,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
 
        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;
@@ -389,7 +387,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
        status = 0;
 bail:
        if (handle)
-               ocfs2_commit_trans(handle);
+               ocfs2_commit_trans(osb, handle);
 
        if (ac)
                ocfs2_free_alloc_context(ac);
@@ -402,27 +400,38 @@ bail:
 }
 
 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;
+       }
 
-       ocfs2_handle_add_inode(handle, alloc_inode);
-       status = ocfs2_meta_lock(alloc_inode, handle, &bh, 1);
+       mutex_lock(&alloc_inode->i_mutex);
+
+       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);
@@ -473,14 +482,13 @@ bail:
 }
 
 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);
@@ -488,28 +496,18 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
        }
 
        (*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);
@@ -523,21 +521,16 @@ bail:
                *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);
@@ -545,22 +538,13 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
        }
 
        (*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);
@@ -574,9 +558,6 @@ bail:
                *ac = NULL;
        }
 
-       if (alloc_inode)
-               iput(alloc_inode);
-
        mlog_exit(status);
        return status;
 }
@@ -588,20 +569,17 @@ int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb,
 {
        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;
 }
@@ -610,7 +588,6 @@ bail:
  * 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)
 {
@@ -618,9 +595,7 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb,
 
        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);
@@ -628,12 +603,10 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb,
        }
 
        (*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)) {
@@ -774,7 +747,7 @@ static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
        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,
@@ -845,7 +818,7 @@ static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl)
        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,
@@ -1025,7 +998,7 @@ static int ocfs2_block_group_search(struct inode *inode,
 }
 
 static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
-                                      struct ocfs2_journal_handle *handle,
+                                      handle_t *handle,
                                       struct buffer_head *di_bh,
                                       u32 num_bits,
                                       u16 chain)
@@ -1055,6 +1028,7 @@ out:
 }
 
 static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
+                                 handle_t *handle,
                                  u32 bits_wanted,
                                  u32 min_bits,
                                  u16 *bit_off,
@@ -1067,7 +1041,6 @@ static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
        struct buffer_head *group_bh = NULL;
        struct ocfs2_group_desc *gd;
        struct inode *alloc_inode = ac->ac_inode;
-       struct ocfs2_journal_handle *handle = ac->ac_handle;
 
        ret = ocfs2_read_block(OCFS2_SB(alloc_inode->i_sb), gd_blkno,
                               &group_bh, OCFS2_BH_CACHED, alloc_inode);
@@ -1115,6 +1088,7 @@ out:
 }
 
 static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
+                             handle_t *handle,
                              u32 bits_wanted,
                              u32 min_bits,
                              u16 *bit_off,
@@ -1126,7 +1100,6 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
        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;
@@ -1272,6 +1245,7 @@ bail:
 /* 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,
@@ -1313,8 +1287,8 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
                 * by jumping straight to the most recently used
                 * allocation group. This helps us mantain some
                 * contiguousness across allocations. */
-               status = ocfs2_search_one_group(ac, bits_wanted, min_bits,
-                                               bit_off, num_bits,
+               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
@@ -1336,7 +1310,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
        ac->ac_chain = victim;
        ac->ac_allow_chain_relink = 1;
 
-       status = ocfs2_search_chain(ac, bits_wanted, min_bits, bit_off,
+       status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, bit_off,
                                    num_bits, bg_blkno, &bits_left);
        if (!status)
                goto set_hint;
@@ -1360,7 +1334,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
                        continue;
 
                ac->ac_chain = i;
-               status = ocfs2_search_chain(ac, bits_wanted, min_bits,
+               status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits,
                                            bit_off, num_bits, bg_blkno,
                                            &bits_left);
                if (!status)
@@ -1388,7 +1362,7 @@ bail:
 }
 
 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,
@@ -1401,10 +1375,10 @@ int ocfs2_claim_metadata(struct ocfs2_super *osb,
        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,
@@ -1425,7 +1399,7 @@ bail:
 }
 
 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)
@@ -1440,10 +1414,10 @@ int ocfs2_claim_new_inode(struct ocfs2_super *osb,
        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,
@@ -1528,7 +1502,7 @@ static inline void ocfs2_block_to_cluster_group(struct inode *inode,
  * 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,
@@ -1546,7 +1520,6 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
 
        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,
@@ -1572,6 +1545,7 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
 
                status = ocfs2_claim_suballoc_bits(osb,
                                                   ac,
+                                                  handle,
                                                   bits_wanted,
                                                   min_clusters,
                                                   &bg_bit_off,
@@ -1598,7 +1572,7 @@ bail:
        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,
@@ -1653,7 +1627,7 @@ bail:
 /*
  * 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,
@@ -1737,7 +1711,7 @@ static inline u64 ocfs2_which_suballoc_group(u64 block, unsigned int 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)
@@ -1750,7 +1724,7 @@ int ocfs2_free_dinode(struct ocfs2_journal_handle *handle,
                                        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)
@@ -1763,7 +1737,7 @@ int ocfs2_free_extent_block(struct ocfs2_journal_handle *handle,
                                        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,