Input: add mc13783 touchscreen driver
[safe/jmp/linux-2.6] / fs / reiserfs / inode.c
index b090d2d..3a28e77 100644 (file)
@@ -52,8 +52,8 @@ void reiserfs_delete_inode(struct inode *inode)
                /* Do quota update inside a transaction for journaled quotas. We must do that
                 * after delete_object so that quota updates go into the same transaction as
                 * stat data deletion */
-               if (!err)
-                       DQUOT_FREE_INODE(inode);
+               if (!err) 
+                       vfs_dq_free_inode(inode);
 
                if (journal_end(&th, inode->i_sb, jbegin_count))
                        goto out;
@@ -251,7 +251,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block,
        struct cpu_key key;
        struct buffer_head *bh;
        struct item_head *ih, tmp_ih;
-       int fs_gen;
        b_blocknr_t blocknr;
        char *p = NULL;
        int chars;
@@ -265,7 +264,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block,
                     (loff_t) block * inode->i_sb->s_blocksize + 1, TYPE_ANY,
                     3);
 
-      research:
        result = search_for_position_by_key(inode->i_sb, &key, &path);
        if (result != POSITION_FOUND) {
                pathrelse(&path);
@@ -340,7 +338,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block,
        }
        // read file tail into part of page
        offset = (cpu_key_k_offset(&key) - 1) & (PAGE_CACHE_SIZE - 1);
-       fs_gen = get_generation(inode->i_sb);
        copy_item_head(&tmp_ih, ih);
 
        /* we only want to kmap if we are reading the tail into the page.
@@ -348,13 +345,9 @@ static int _get_block_create_0(struct inode *inode, sector_t block,
         ** sure we need to.  But, this means the item might move if
         ** kmap schedules
         */
-       if (!p) {
+       if (!p)
                p = (char *)kmap(bh_result->b_page);
-               if (fs_changed(fs_gen, inode->i_sb)
-                   && item_moved(&tmp_ih, &path)) {
-                       goto research;
-               }
-       }
+
        p += offset;
        memset(p, 0, inode->i_sb->s_blocksize);
        do {
@@ -489,10 +482,14 @@ static int reiserfs_get_blocks_direct_io(struct inode *inode,
           disappeared */
        if (REISERFS_I(inode)->i_flags & i_pack_on_close_mask) {
                int err;
-               lock_kernel();
+
+               reiserfs_write_lock(inode->i_sb);
+
                err = reiserfs_commit_for_inode(inode);
                REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
-               unlock_kernel();
+
+               reiserfs_write_unlock(inode->i_sb);
+
                if (err < 0)
                        ret = err;
        }
@@ -601,6 +598,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
        __le32 *item;
        int done;
        int fs_gen;
+       int lock_depth;
        struct reiserfs_transaction_handle *th = NULL;
        /* space reserved in transaction batch:
           . 3 balancings in direct->indirect conversion
@@ -616,12 +614,11 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
        loff_t new_offset =
            (((loff_t) block) << inode->i_sb->s_blocksize_bits) + 1;
 
-       /* bad.... */
-       reiserfs_write_lock(inode->i_sb);
+       lock_depth = reiserfs_write_lock_once(inode->i_sb);
        version = get_inode_item_key_version(inode);
 
        if (!file_capable(inode, block)) {
-               reiserfs_write_unlock(inode->i_sb);
+               reiserfs_write_unlock_once(inode->i_sb, lock_depth);
                return -EFBIG;
        }
 
@@ -633,7 +630,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
                /* find number of block-th logical block of the file */
                ret = _get_block_create_0(inode, block, bh_result,
                                          create | GET_BLOCK_READ_DIRECT);
-               reiserfs_write_unlock(inode->i_sb);
+               reiserfs_write_unlock_once(inode->i_sb, lock_depth);
                return ret;
        }
        /*
@@ -751,7 +748,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
                if (!dangle && th)
                        retval = reiserfs_end_persistent_transaction(th);
 
-               reiserfs_write_unlock(inode->i_sb);
+               reiserfs_write_unlock_once(inode->i_sb, lock_depth);
 
                /* the item was found, so new blocks were not added to the file
                 ** there is no need to make sure the inode is updated with this
@@ -935,7 +932,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
                        if (blocks_needed == 1) {
                                un = &unf_single;
                        } else {
-                               un = kzalloc(min(blocks_needed, max_to_insert) * UNFM_P_SIZE, GFP_ATOMIC);      // We need to avoid scheduling.
+                               un = kzalloc(min(blocks_needed, max_to_insert) * UNFM_P_SIZE, GFP_NOFS);
                                if (!un) {
                                        un = &unf_single;
                                        blocks_needed = 1;
@@ -997,10 +994,16 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
                        if (retval)
                                goto failure;
                }
-               /* inserting indirect pointers for a hole can take a
-                ** long time.  reschedule if needed
+               /*
+                * inserting indirect pointers for a hole can take a
+                * long time.  reschedule if needed and also release the write
+                * lock for others.
                 */
-               cond_resched();
+               if (need_resched()) {
+                       reiserfs_write_unlock_once(inode->i_sb, lock_depth);
+                       schedule();
+                       lock_depth = reiserfs_write_lock_once(inode->i_sb);
+               }
 
                retval = search_for_position_by_key(inode->i_sb, &key, &path);
                if (retval == IO_ERROR) {
@@ -1035,7 +1038,7 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
                        retval = err;
        }
 
-       reiserfs_write_unlock(inode->i_sb);
+       reiserfs_write_unlock_once(inode->i_sb, lock_depth);
        reiserfs_check_path(&path);
        return retval;
 }
@@ -1131,8 +1134,6 @@ static void init_inode(struct inode *inode, struct treepath *path)
        REISERFS_I(inode)->i_trans_id = 0;
        REISERFS_I(inode)->i_jl = NULL;
        mutex_init(&(REISERFS_I(inode)->i_mmap));
-       reiserfs_init_acl_access(inode);
-       reiserfs_init_acl_default(inode);
        reiserfs_init_xattr_rwsem(inode);
 
        if (stat_data_v1(ih)) {
@@ -1761,7 +1762,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
 
        BUG_ON(!th->t_trans_id);
 
-       if (DQUOT_ALLOC_INODE(inode)) {
+       if (vfs_dq_alloc_inode(inode)) {
                err = -EDQUOT;
                goto out_end_trans;
        }
@@ -1834,8 +1835,6 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
            REISERFS_I(dir)->i_attrs & REISERFS_INHERIT_MASK;
        sd_attrs_to_i_attrs(REISERFS_I(inode)->i_attrs, inode);
        mutex_init(&(REISERFS_I(inode)->i_mmap));
-       reiserfs_init_acl_access(inode);
-       reiserfs_init_acl_default(inode);
        reiserfs_init_xattr_rwsem(inode);
 
        /* key to search for correct place for new stat data */
@@ -1957,12 +1956,12 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
        INODE_PKEY(inode)->k_objectid = 0;
 
        /* Quota change must be inside a transaction for journaling */
-       DQUOT_FREE_INODE(inode);
+       vfs_dq_free_inode(inode);
 
       out_end_trans:
        journal_end(th, th->t_super, th->t_blocks_allocated);
        /* Drop can be outside and it needs more credits so it's better to have it outside */
-       DQUOT_DROP(inode);
+       vfs_dq_drop(inode);
        inode->i_flags |= S_NOQUOTA;
        make_bad_inode(inode);
 
@@ -2076,8 +2075,9 @@ int reiserfs_truncate_file(struct inode *inode, int update_timestamps)
        int error;
        struct buffer_head *bh = NULL;
        int err2;
+       int lock_depth;
 
-       reiserfs_write_lock(inode->i_sb);
+       lock_depth = reiserfs_write_lock_once(inode->i_sb);
 
        if (inode->i_size > 0) {
                error = grab_tail_page(inode, &page, &bh);
@@ -2146,14 +2146,17 @@ int reiserfs_truncate_file(struct inode *inode, int update_timestamps)
                page_cache_release(page);
        }
 
-       reiserfs_write_unlock(inode->i_sb);
+       reiserfs_write_unlock_once(inode->i_sb, lock_depth);
+
        return 0;
       out:
        if (page) {
                unlock_page(page);
                page_cache_release(page);
        }
-       reiserfs_write_unlock(inode->i_sb);
+
+       reiserfs_write_unlock_once(inode->i_sb, lock_depth);
+
        return error;
 }
 
@@ -2612,7 +2615,10 @@ int reiserfs_prepare_write(struct file *f, struct page *page,
        int ret;
        int old_ref = 0;
 
+       reiserfs_write_unlock(inode->i_sb);
        reiserfs_wait_on_write_block(inode->i_sb);
+       reiserfs_write_lock(inode->i_sb);
+
        fix_tail_page_for_writing(page);
        if (reiserfs_transaction_running(inode->i_sb)) {
                struct reiserfs_transaction_handle *th;
@@ -2668,6 +2674,8 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping,
        int update_sd = 0;
        struct reiserfs_transaction_handle *th;
        unsigned start;
+       int lock_depth = 0;
+       bool locked = false;
 
        if ((unsigned long)fsdata & AOP_FLAG_CONT_EXPAND)
                pos ++;
@@ -2694,9 +2702,11 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping,
         ** to do the i_size updates here.
         */
        pos += copied;
+
        if (pos > inode->i_size) {
                struct reiserfs_transaction_handle myth;
-               reiserfs_write_lock(inode->i_sb);
+               lock_depth = reiserfs_write_lock_once(inode->i_sb);
+               locked = true;
                /* If the file have grown beyond the border where it
                   can have a tail, unmark it as needing a tail
                   packing */
@@ -2707,10 +2717,9 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping,
                        REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
 
                ret = journal_begin(&myth, inode->i_sb, 1);
-               if (ret) {
-                       reiserfs_write_unlock(inode->i_sb);
+               if (ret)
                        goto journal_error;
-               }
+
                reiserfs_update_inode_transaction(inode);
                inode->i_size = pos;
                /*
@@ -2722,34 +2731,36 @@ static int reiserfs_write_end(struct file *file, struct address_space *mapping,
                reiserfs_update_sd(&myth, inode);
                update_sd = 1;
                ret = journal_end(&myth, inode->i_sb, 1);
-               reiserfs_write_unlock(inode->i_sb);
                if (ret)
                        goto journal_error;
        }
        if (th) {
-               reiserfs_write_lock(inode->i_sb);
+               if (!locked) {
+                       lock_depth = reiserfs_write_lock_once(inode->i_sb);
+                       locked = true;
+               }
                if (!update_sd)
                        mark_inode_dirty(inode);
                ret = reiserfs_end_persistent_transaction(th);
-               reiserfs_write_unlock(inode->i_sb);
                if (ret)
                        goto out;
        }
 
       out:
+       if (locked)
+               reiserfs_write_unlock_once(inode->i_sb, lock_depth);
        unlock_page(page);
        page_cache_release(page);
        return ret == 0 ? copied : ret;
 
       journal_error:
+       reiserfs_write_unlock_once(inode->i_sb, lock_depth);
+       locked = false;
        if (th) {
-               reiserfs_write_lock(inode->i_sb);
                if (!update_sd)
                        reiserfs_update_sd(th, inode);
                ret = reiserfs_end_persistent_transaction(th);
-               reiserfs_write_unlock(inode->i_sb);
        }
-
        goto out;
 }
 
@@ -2762,7 +2773,10 @@ int reiserfs_commit_write(struct file *f, struct page *page,
        int update_sd = 0;
        struct reiserfs_transaction_handle *th = NULL;
 
+       reiserfs_write_unlock(inode->i_sb);
        reiserfs_wait_on_write_block(inode->i_sb);
+       reiserfs_write_lock(inode->i_sb);
+
        if (reiserfs_transaction_running(inode->i_sb)) {
                th = current->journal_info;
        }
@@ -2774,7 +2788,6 @@ int reiserfs_commit_write(struct file *f, struct page *page,
         */
        if (pos > inode->i_size) {
                struct reiserfs_transaction_handle myth;
-               reiserfs_write_lock(inode->i_sb);
                /* If the file have grown beyond the border where it
                   can have a tail, unmark it as needing a tail
                   packing */
@@ -2785,10 +2798,9 @@ int reiserfs_commit_write(struct file *f, struct page *page,
                        REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
 
                ret = journal_begin(&myth, inode->i_sb, 1);
-               if (ret) {
-                       reiserfs_write_unlock(inode->i_sb);
+               if (ret)
                        goto journal_error;
-               }
+
                reiserfs_update_inode_transaction(inode);
                inode->i_size = pos;
                /*
@@ -2800,16 +2812,13 @@ int reiserfs_commit_write(struct file *f, struct page *page,
                reiserfs_update_sd(&myth, inode);
                update_sd = 1;
                ret = journal_end(&myth, inode->i_sb, 1);
-               reiserfs_write_unlock(inode->i_sb);
                if (ret)
                        goto journal_error;
        }
        if (th) {
-               reiserfs_write_lock(inode->i_sb);
                if (!update_sd)
                        mark_inode_dirty(inode);
                ret = reiserfs_end_persistent_transaction(th);
-               reiserfs_write_unlock(inode->i_sb);
                if (ret)
                        goto out;
        }
@@ -2819,11 +2828,9 @@ int reiserfs_commit_write(struct file *f, struct page *page,
 
       journal_error:
        if (th) {
-               reiserfs_write_lock(inode->i_sb);
                if (!update_sd)
                        reiserfs_update_sd(th, inode);
                ret = reiserfs_end_persistent_transaction(th);
-               reiserfs_write_unlock(inode->i_sb);
        }
 
        return ret;
@@ -3114,7 +3121,7 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
                                if (error)
                                        goto out;
                                error =
-                                   DQUOT_TRANSFER(inode, attr) ? -EDQUOT : 0;
+                                   vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
                                if (error) {
                                        journal_end(&th, inode->i_sb,
                                                    jbegin_count);