diff options
Diffstat (limited to 'fs/exofs/inode.c')
| -rw-r--r-- | fs/exofs/inode.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index 7c26ba371e1..ba8d9fab469 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -1115,3 +1115,189 @@ struct inode *exofs_new_inode(struct inode *dir, int mode) return inode; } + +/* + * struct to pass two arguments to update_inode's callback + */ +struct updatei_args { + struct exofs_sb_info *sbi; + struct exofs_fcb fcb; +}; + +/* + * Callback function from exofs_update_inode(). + */ +static void updatei_done(struct osd_request *or, void *p) +{ + struct updatei_args *args = p; + + osd_end_request(or); + + atomic_dec(&args->sbi->s_curr_pending); + + kfree(args); +} + +/* + * Write the inode to the OSD. Just fill up the struct, and set the attribute + * synchronously or asynchronously depending on the do_sync flag. + */ +static int exofs_update_inode(struct inode *inode, int do_sync) +{ + struct exofs_i_info *oi = exofs_i(inode); + struct super_block *sb = inode->i_sb; + struct exofs_sb_info *sbi = sb->s_fs_info; + struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF}; + struct osd_request *or; + struct osd_attr attr; + struct exofs_fcb *fcb; + struct updatei_args *args; + int ret; + + args = kzalloc(sizeof(*args), GFP_KERNEL); + if (!args) + return -ENOMEM; + + fcb = &args->fcb; + + fcb->i_mode = cpu_to_le16(inode->i_mode); + fcb->i_uid = cpu_to_le32(inode->i_uid); + fcb->i_gid = cpu_to_le32(inode->i_gid); + fcb->i_links_count = cpu_to_le16(inode->i_nlink); + fcb->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec); + fcb->i_atime = cpu_to_le32(inode->i_atime.tv_sec); + fcb->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec); + oi->i_commit_size = i_size_read(inode); + fcb->i_size = cpu_to_le64(oi->i_commit_size); + fcb->i_generation = cpu_to_le32(inode->i_generation); + + if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { + if (old_valid_dev(inode->i_rdev)) { + fcb->i_data[0] = + cpu_to_le32(old_encode_dev(inode->i_rdev)); + fcb->i_data[1] = 0; + } else { + fcb->i_data[0] = 0; + fcb->i_data[1] = + cpu_to_le32(new_encode_dev(inode->i_rdev)); + fcb->i_data[2] = 0; + } + } else + memcpy(fcb->i_data, oi->i_data, sizeof(fcb->i_data)); + + or = osd_start_request(sbi->s_dev, GFP_KERNEL); + if (unlikely(!or)) { + EXOFS_ERR("exofs_update_inode: osd_start_request failed.\n"); + ret = -ENOMEM; + goto free_args; + } + + osd_req_set_attributes(or, &obj); + + attr = g_attr_inode_data; + attr.val_ptr = fcb; + osd_req_add_set_attr_list(or, &attr, 1); + + if (!obj_created(oi)) { + EXOFS_DBGMSG("!obj_created\n"); + BUG_ON(!obj_2bcreated(oi)); + wait_event(oi->i_wq, obj_created(oi)); + EXOFS_DBGMSG("wait_event done\n"); + } + + if (do_sync) { + ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred); + osd_end_request(or); + goto free_args; + } else { + args->sbi = sbi; + + ret = exofs_async_op(or, updatei_done, args, oi->i_cred); + if (ret) { + osd_end_request(or); + goto free_args; + } + atomic_inc(&sbi->s_curr_pending); + goto out; /* deallocation in updatei_done */ + } + +free_args: + kfree(args); +out: + EXOFS_DBGMSG("ret=>%d\n", ret); + return ret; +} + +int exofs_write_inode(struct inode *inode, int wait) +{ + return exofs_update_inode(inode, wait); +} + +/* + * Callback function from exofs_delete_inode() - don't have much cleaning up to + * do. + */ +static void delete_done(struct osd_request *or, void *p) +{ + struct exofs_sb_info *sbi; + osd_end_request(or); + sbi = p; + atomic_dec(&sbi->s_curr_pending); +} + +/* + * Called when the refcount of an inode reaches zero. We remove the object + * from the OSD here. We make sure the object was created before we try and + * delete it. + */ +void exofs_delete_inode(struct inode *inode) +{ + struct exofs_i_info *oi = exofs_i(inode); + struct super_block *sb = inode->i_sb; + struct exofs_sb_info *sbi = sb->s_fs_info; + struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF}; + struct osd_request *or; + int ret; + + truncate_inode_pages(&inode->i_data, 0); + + if (is_bad_inode(inode)) + goto no_delete; + + mark_inode_dirty(inode); + exofs_update_inode(inode, inode_needs_sync(inode)); + + inode->i_size = 0; + if (inode->i_blocks) + exofs_truncate(inode); + + clear_inode(inode); + + or = osd_start_request(sbi->s_dev, GFP_KERNEL); + if (unlikely(!or)) { + EXOFS_ERR("exofs_delete_inode: osd_start_request failed\n"); + return; + } + + osd_req_remove_object(or, &obj); + + /* if we are deleting an obj that hasn't been created yet, wait */ + if (!obj_created(oi)) { + BUG_ON(!obj_2bcreated(oi)); + wait_event(oi->i_wq, obj_created(oi)); + } + + ret = exofs_async_op(or, delete_done, sbi, oi->i_cred); + if (ret) { + EXOFS_ERR( + "ERROR: @exofs_delete_inode exofs_async_op failed\n"); + osd_end_request(or); + return; + } + atomic_inc(&sbi->s_curr_pending); + + return; + +no_delete: + clear_inode(inode); +} |