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https://github.com/versity/scoutfs.git
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Mark Fasheh
e711c15acf
To actually use it, we first have to copy symbols over from the dlm build into the scoutfs source directory. Make that happen automatically for us in the Makefile. The only users of locking at the moment are mount, unmount and xattr read/write. Adding more locking calls should be a straight-forward endeavor. The LVB based server ip communication didn't work out, and LVBS as they are written don't make sense in a range locking world. So instead, we record the server ip address in the superblock. This is protected by the listen lock, which also arbitrates which node will be the manifest server. We take and drop the dlm lock on each lock/unlock call. Lock caching will come in a future patch. Signed-off-by: Mark Fasheh <mfasheh@versity.com>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
#ifndef _SCOUTFS_SUPER_H_
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#define _SCOUTFS_SUPER_H_
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#include <linux/fs.h>
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#include <linux/rbtree.h>
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#include "format.h"
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#include "options.h"
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struct scoutfs_counters;
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struct item_cache;
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struct manifest;
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struct segment_cache;
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struct compact_info;
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struct data_info;
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struct trans_info;
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struct lock_info;
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struct net_info;
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struct inode_sb_info;
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struct scoutfs_sb_info {
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struct super_block *sb;
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u64 node_id;
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struct scoutfs_super_block super;
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spinlock_t next_ino_lock;
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struct manifest *manifest;
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struct item_cache *item_cache;
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struct segment_cache *segment_cache;
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struct seg_alloc *seg_alloc;
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struct compact_info *compact_info;
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struct data_info *data_info;
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struct inode_sb_info *inode_sb_info;
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wait_queue_head_t trans_hold_wq;
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struct task_struct *trans_task;
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spinlock_t trans_write_lock;
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u64 trans_write_count;
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u64 trans_seq;
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int trans_write_ret;
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struct delayed_work trans_write_work;
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wait_queue_head_t trans_write_wq;
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struct workqueue_struct *trans_write_workq;
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bool trans_deadline_expired;
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struct trans_info *trans_info;
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struct lock_info *lock_info;
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struct net_info *net_info;
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/* $sysfs/fs/scoutfs/$id/ */
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struct kset *kset;
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struct scoutfs_counters *counters;
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struct mount_options opts;
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};
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static inline struct scoutfs_sb_info *SCOUTFS_SB(struct super_block *sb)
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{
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return sb->s_fs_info;
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}
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int scoutfs_read_supers(struct super_block *sb,
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struct scoutfs_super_block *local);
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void scoutfs_advance_dirty_super(struct super_block *sb);
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int scoutfs_write_dirty_super(struct super_block *sb);
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#endif
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