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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/nilfs2/segment.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/nilfs2/segment.h')
-rw-r--r-- | ANDROID_3.4.5/fs/nilfs2/segment.h | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/ANDROID_3.4.5/fs/nilfs2/segment.h b/ANDROID_3.4.5/fs/nilfs2/segment.h deleted file mode 100644 index 38a1d001..00000000 --- a/ANDROID_3.4.5/fs/nilfs2/segment.h +++ /dev/null @@ -1,246 +0,0 @@ -/* - * segment.h - NILFS Segment constructor prototypes and definitions - * - * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Written by Ryusuke Konishi <ryusuke@osrg.net> - * - */ -#ifndef _NILFS_SEGMENT_H -#define _NILFS_SEGMENT_H - -#include <linux/types.h> -#include <linux/fs.h> -#include <linux/buffer_head.h> -#include <linux/nilfs2_fs.h> -#include "nilfs.h" - -struct nilfs_root; - -/** - * struct nilfs_recovery_info - Recovery information - * @ri_need_recovery: Recovery status - * @ri_super_root: Block number of the last super root - * @ri_ri_cno: Number of the last checkpoint - * @ri_lsegs_start: Region for roll-forwarding (start block number) - * @ri_lsegs_end: Region for roll-forwarding (end block number) - * @ri_lseg_start_seq: Sequence value of the segment at ri_lsegs_start - * @ri_used_segments: List of segments to be mark active - * @ri_pseg_start: Block number of the last partial segment - * @ri_seq: Sequence number on the last partial segment - * @ri_segnum: Segment number on the last partial segment - * @ri_nextnum: Next segment number on the last partial segment - */ -struct nilfs_recovery_info { - int ri_need_recovery; - sector_t ri_super_root; - __u64 ri_cno; - - sector_t ri_lsegs_start; - sector_t ri_lsegs_end; - u64 ri_lsegs_start_seq; - struct list_head ri_used_segments; - sector_t ri_pseg_start; - u64 ri_seq; - __u64 ri_segnum; - __u64 ri_nextnum; -}; - -/* ri_need_recovery */ -#define NILFS_RECOVERY_SR_UPDATED 1 /* The super root was updated */ -#define NILFS_RECOVERY_ROLLFORWARD_DONE 2 /* Rollforward was carried out */ - -/** - * struct nilfs_cstage - Context of collection stage - * @scnt: Stage count - * @flags: State flags - * @dirty_file_ptr: Pointer on dirty_files list, or inode of a target file - * @gc_inode_ptr: Pointer on the list of gc-inodes - */ -struct nilfs_cstage { - int scnt; - unsigned flags; - struct nilfs_inode_info *dirty_file_ptr; - struct nilfs_inode_info *gc_inode_ptr; -}; - -struct nilfs_segment_buffer; - -struct nilfs_segsum_pointer { - struct buffer_head *bh; - unsigned offset; /* offset in bytes */ -}; - -/** - * struct nilfs_sc_info - Segment constructor information - * @sc_super: Back pointer to super_block struct - * @sc_root: root object of the current filesystem tree - * @sc_nblk_inc: Block count of current generation - * @sc_dirty_files: List of files to be written - * @sc_gc_inodes: List of GC inodes having blocks to be written - * @sc_freesegs: array of segment numbers to be freed - * @sc_nfreesegs: number of segments on @sc_freesegs - * @sc_dsync_inode: inode whose data pages are written for a sync operation - * @sc_dsync_start: start byte offset of data pages - * @sc_dsync_end: end byte offset of data pages (inclusive) - * @sc_segbufs: List of segment buffers - * @sc_write_logs: List of segment buffers to hold logs under writing - * @sc_segbuf_nblocks: Number of available blocks in segment buffers. - * @sc_curseg: Current segment buffer - * @sc_stage: Collection stage - * @sc_finfo_ptr: pointer to the current finfo struct in the segment summary - * @sc_binfo_ptr: pointer to the current binfo struct in the segment summary - * @sc_blk_cnt: Block count of a file - * @sc_datablk_cnt: Data block count of a file - * @sc_nblk_this_inc: Number of blocks included in the current logical segment - * @sc_seg_ctime: Creation time - * @sc_cno: checkpoint number of current log - * @sc_flags: Internal flags - * @sc_state_lock: spinlock for sc_state and so on - * @sc_state: Segctord state flags - * @sc_flush_request: inode bitmap of metadata files to be flushed - * @sc_wait_request: Client request queue - * @sc_wait_daemon: Daemon wait queue - * @sc_wait_task: Start/end wait queue to control segctord task - * @sc_seq_request: Request counter - * @sc_seq_accept: Accepted request count - * @sc_seq_done: Completion counter - * @sc_sync: Request of explicit sync operation - * @sc_interval: Timeout value of background construction - * @sc_mjcp_freq: Frequency of creating checkpoints - * @sc_lseg_stime: Start time of the latest logical segment - * @sc_watermark: Watermark for the number of dirty buffers - * @sc_timer: Timer for segctord - * @sc_task: current thread of segctord - */ -struct nilfs_sc_info { - struct super_block *sc_super; - struct nilfs_root *sc_root; - - unsigned long sc_nblk_inc; - - struct list_head sc_dirty_files; - struct list_head sc_gc_inodes; - - __u64 *sc_freesegs; - size_t sc_nfreesegs; - - struct nilfs_inode_info *sc_dsync_inode; - loff_t sc_dsync_start; - loff_t sc_dsync_end; - - /* Segment buffers */ - struct list_head sc_segbufs; - struct list_head sc_write_logs; - unsigned long sc_segbuf_nblocks; - struct nilfs_segment_buffer *sc_curseg; - - struct nilfs_cstage sc_stage; - - struct nilfs_segsum_pointer sc_finfo_ptr; - struct nilfs_segsum_pointer sc_binfo_ptr; - unsigned long sc_blk_cnt; - unsigned long sc_datablk_cnt; - unsigned long sc_nblk_this_inc; - time_t sc_seg_ctime; - __u64 sc_cno; - unsigned long sc_flags; - - spinlock_t sc_state_lock; - unsigned long sc_state; - unsigned long sc_flush_request; - - wait_queue_head_t sc_wait_request; - wait_queue_head_t sc_wait_daemon; - wait_queue_head_t sc_wait_task; - - __u32 sc_seq_request; - __u32 sc_seq_accepted; - __u32 sc_seq_done; - - int sc_sync; - unsigned long sc_interval; - unsigned long sc_mjcp_freq; - unsigned long sc_lseg_stime; /* in 1/HZ seconds */ - unsigned long sc_watermark; - - struct timer_list sc_timer; - struct task_struct *sc_task; -}; - -/* sc_flags */ -enum { - NILFS_SC_DIRTY, /* One or more dirty meta-data blocks exist */ - NILFS_SC_UNCLOSED, /* Logical segment is not closed */ - NILFS_SC_SUPER_ROOT, /* The latest segment has a super root */ - NILFS_SC_PRIOR_FLUSH, /* Requesting immediate flush without making a - checkpoint */ - NILFS_SC_HAVE_DELTA, /* Next checkpoint will have update of files - other than DAT, cpfile, sufile, or files - moved by GC */ -}; - -/* sc_state */ -#define NILFS_SEGCTOR_QUIT 0x0001 /* segctord is being destroyed */ -#define NILFS_SEGCTOR_COMMIT 0x0004 /* committed transaction exists */ - -/* - * Constant parameters - */ -#define NILFS_SC_CLEANUP_RETRY 3 /* Retry count of construction when - destroying segctord */ - -/* - * Default values of timeout, in seconds. - */ -#define NILFS_SC_DEFAULT_TIMEOUT 5 /* Timeout value of dirty blocks. - It triggers construction of a - logical segment with a super root */ -#define NILFS_SC_DEFAULT_SR_FREQ 30 /* Maximum frequency of super root - creation */ - -/* - * The default threshold amount of data, in block counts. - */ -#define NILFS_SC_DEFAULT_WATERMARK 3600 - -/* super.c */ -extern struct kmem_cache *nilfs_transaction_cachep; - -/* segment.c */ -extern void nilfs_relax_pressure_in_lock(struct super_block *); - -extern int nilfs_construct_segment(struct super_block *); -extern int nilfs_construct_dsync_segment(struct super_block *, struct inode *, - loff_t, loff_t); -extern void nilfs_flush_segment(struct super_block *, ino_t); -extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *, - void **); - -int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root); -void nilfs_detach_log_writer(struct super_block *sb); - -/* recovery.c */ -extern int nilfs_read_super_root_block(struct the_nilfs *, sector_t, - struct buffer_head **, int); -extern int nilfs_search_super_root(struct the_nilfs *, - struct nilfs_recovery_info *); -int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, struct super_block *sb, - struct nilfs_recovery_info *ri); -extern void nilfs_dispose_segment_list(struct list_head *); - -#endif /* _NILFS_SEGMENT_H */ |