/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 1998, 2000 Marshall Kirk McKusick. All Rights Reserved. * * The soft updates code is derived from the appendix of a University * of Michigan technical report (Gregory R. Ganger and Yale N. Patt, * "Soft Updates: A Solution to the Metadata Update Problem in File * Systems", CSE-TR-254-95, August 1995). * * Further information about soft updates can be obtained from: * * Marshall Kirk McKusick http://www.mckusick.com/softdep/ * 1614 Oxford Street mckusick@mckusick.com * Berkeley, CA 94709-1608 +1-510-843-9542 * USA * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/queue.h> /* * Allocation dependencies are handled with undo/redo on the in-memory * copy of the data. A particular data dependency is eliminated when * it is ALLCOMPLETE: that is ATTACHED, DEPCOMPLETE, and COMPLETE. * * The ATTACHED flag means that the data is not currently being written * to disk. * * The UNDONE flag means that the data has been rolled back to a safe * state for writing to the disk. When the I/O completes, the data is * restored to its current form and the state reverts to ATTACHED. * The data must be locked throughout the rollback, I/O, and roll * forward so that the rolled back information is never visible to * user processes. * * The COMPLETE flag indicates that the item has been written. For example, * a dependency that requires that an inode be written will be marked * COMPLETE after the inode has been written to disk. * * The DEPCOMPLETE flag indicates the completion of any other * dependencies such as the writing of a cylinder group map has been * completed. A dependency structure may be freed only when both it * and its dependencies have completed and any rollbacks that are in * progress have finished as indicated by the set of ALLCOMPLETE flags * all being set. * * The two MKDIR flags indicate additional dependencies that must be done * when creating a new directory. MKDIR_BODY is cleared when the directory * data block containing the "." and ".." entries has been written. * MKDIR_PARENT is cleared when the parent inode with the increased link * count for ".." has been written. When both MKDIR flags have been * cleared, the DEPCOMPLETE flag is set to indicate that the directory * dependencies have been completed. The writing of the directory inode * itself sets the COMPLETE flag which then allows the directory entry for * the new directory to be written to disk. The RMDIR flag marks a dirrem * structure as representing the removal of a directory rather than a * file. When the removal dependencies are completed, additional work needs * to be done* (an additional decrement of the associated inode, and a * decrement of the parent inode). * * The DIRCHG flag marks a diradd structure as representing the changing * of an existing entry rather than the addition of a new one. When * the update is complete the dirrem associated with the inode for * the old name must be added to the worklist to do the necessary * reference count decrement. * * The GOINGAWAY flag indicates that the data structure is frozen from * further change until its dependencies have been completed and its * resources freed after which it will be discarded. * * The IOSTARTED flag prevents multiple calls to the I/O start routine from * doing multiple rollbacks. * * The NEWBLOCK flag marks pagedep structures that have just been allocated, * so must be claimed by the inode before all dependencies are complete. * * The INPROGRESS flag marks worklist structures that are still on the * worklist, but are being considered for action by some process. * * The UFS1FMT flag indicates that the inode being processed is a ufs1 format. * * The EXTDATA flag indicates that the allocdirect describes an * extended-attributes dependency. * * The ONWORKLIST flag shows whether the structure is currently linked * onto a worklist. * * The UNLINK* flags track the progress of updating the on-disk linked * list of active but unlinked inodes. When an inode is first unlinked * it is marked as UNLINKED. When its on-disk di_freelink has been * written its UNLINKNEXT flags is set. When its predecessor in the * list has its di_freelink pointing at us its UNLINKPREV is set. * When the on-disk list can reach it from the superblock, its * UNLINKONLIST flag is set. Once all of these flags are set, it * is safe to let its last name be removed. */ #define ATTACHED 0x000001 #define UNDONE 0x000002 #define COMPLETE 0x000004 #define DEPCOMPLETE 0x000008 #define MKDIR_PARENT 0x000010 /* diradd, mkdir, jaddref, jsegdep only */ #define MKDIR_BODY 0x000020 /* diradd, mkdir, jaddref only */ #define RMDIR 0x000040 /* dirrem only */ #define DIRCHG 0x000080 /* diradd, dirrem only */ #define GOINGAWAY 0x000100 /* indirdep, jremref only */ #define IOSTARTED 0x000200 /* inodedep, pagedep, bmsafemap only */ #define DELAYEDFREE 0x000400 /* allocindirect free delayed. */ #define NEWBLOCK 0x000800 /* pagedep, jaddref only */ #define INPROGRESS 0x001000 /* dirrem, freeblks, freefrag, freefile only */ #define UFS1FMT 0x002000 /* indirdep only */ #define EXTDATA 0x004000 /* allocdirect only */ #define ONWORKLIST 0x008000 #define IOWAITING 0x010000 /* Thread is waiting for IO to complete. */ #define ONDEPLIST 0x020000 /* Structure is on a dependency list. */ #define UNLINKED 0x040000 /* inodedep has been unlinked. */ #define UNLINKNEXT 0x080000 /* inodedep has valid di_freelink */ #define UNLINKPREV 0x100000 /* inodedep is pointed at in the unlink list */ #define UNLINKONLIST 0x200000 /* inodedep is in the unlinked list on disk */ #define UNLINKLINKS (UNLINKNEXT | UNLINKPREV) #define WRITESUCCEEDED 0x400000 /* the disk write completed successfully */ #define ALLCOMPLETE (ATTACHED | COMPLETE | DEPCOMPLETE) #define PRINT_SOFTDEP_FLAGS "\20\27writesucceeded\26unlinkonlist" \ "\25unlinkprev\24unlinknext\23unlinked\22ondeplist\21iowaiting" \ "\20onworklist\17extdata\16ufs1fmt\15inprogress\14newblock" \ "\13delayedfree\12iostarted\11goingaway\10dirchg\7rmdir\6mkdir_body" \ "\5mkdir_parent\4depcomplete\3complete\2undone\1attached" /* * Values for each of the soft dependency types. */ #define D_UNUSED 0 #define D_FIRST D_PAGEDEP #define D_PAGEDEP 1 #define D_INODEDEP 2 #define D_BMSAFEMAP 3 #define D_NEWBLK 4 #define D_ALLOCDIRECT 5 #define D_INDIRDEP 6 #define D_ALLOCINDIR 7 #define D_FREEFRAG 8 #define D_FREEBLKS 9 #define D_FREEFILE 10 #define D_DIRADD 11 #define D_MKDIR 12 #define D_DIRREM 13 #define D_NEWDIRBLK 14 #define D_FREEWORK 15 #define D_FREEDEP 16 #define D_JADDREF 17 #define D_JREMREF 18 #define D_JMVREF 19 #define D_JNEWBLK 20 #define D_JFREEBLK 21 #define D_JFREEFRAG 22 #define D_JSEG 23 #define D_JSEGDEP 24 #define D_SBDEP 25 #define D_JTRUNC 26 #define D_JFSYNC 27 #define D_SENTINEL 28 #define D_LAST D_SENTINEL /* * The workitem queue. * * It is sometimes useful and/or necessary to clean up certain dependencies * in the background rather than during execution of an application process * or interrupt service routine. To realize this, we append dependency * structures corresponding to such tasks to a "workitem" queue. In a soft * updates implementation, most pending workitems should not wait for more * than a couple of seconds, so the filesystem syncer process awakens once * per second to process the items on the queue. */ /* LIST_HEAD(workhead, worklist); -- declared in buf.h */ /* * Each request can be linked onto a work queue through its worklist structure. * To avoid the need for a pointer to the structure itself, this structure * MUST be declared FIRST in each type in which it appears! If more than one * worklist is needed in the structure, then a wk_data field must be added * and the macros below changed to use it. */ struct worklist { LIST_ENTRY(worklist) wk_list; /* list of work requests */ struct mount *wk_mp; /* Mount we live in */ unsigned int wk_type:8, /* type of request */ wk_state:24; /* state flags */ LIST_ENTRY(worklist) wk_all; /* list of deps of this type */ #ifdef INVARIANTS const char *wk_func; /* func where added / removed */ int wk_line; /* line where added / removed */ #endif }; #define WK_DATA(wk) ((void *)(wk)) #define WK_PAGEDEP(wk) ((struct pagedep *)(wk)) #define WK_INODEDEP(wk) ((struct inodedep *)(wk)) #define WK_BMSAFEMAP(wk) ((struct bmsafemap *)(wk)) #define WK_NEWBLK(wk) ((struct newblk *)(wk)) #define WK_ALLOCDIRECT(wk) ((struct allocdirect *)(wk)) #define WK_INDIRDEP(wk) ((struct indirdep *)(wk)) #define WK_ALLOCINDIR(wk) ((struct allocindir *)(wk)) #define WK_FREEFRAG(wk) ((struct freefrag *)(wk)) #define WK_FREEBLKS(wk) ((struct freeblks *)(wk)) #define WK_FREEWORK(wk) ((struct freework *)(wk)) #define WK_FREEFILE(wk) ((struct freefile *)(wk)) #define WK_DIRADD(wk) ((struct diradd *)(wk)) #define WK_MKDIR(wk) ((struct mkdir *)(wk)) #define WK_DIRREM(wk) ((struct dirrem *)(wk)) #define WK_NEWDIRBLK(wk) ((struct newdirblk *)(wk)) #define WK_JADDREF(wk) ((struct jaddref *)(wk)) #define WK_JREMREF(wk) ((struct jremref *)(wk)) #define WK_JMVREF(wk) ((struct jmvref *)(wk)) #define WK_JSEGDEP(wk) ((struct jsegdep *)(wk)) #define WK_JSEG(wk) ((struct jseg *)(wk)) #define WK_JNEWBLK(wk) ((struct jnewblk *)(wk)) #define WK_JFREEBLK(wk) ((struct jfreeblk *)(wk)) #define WK_FREEDEP(wk) ((struct freedep *)(wk)) #define WK_JFREEFRAG(wk) ((struct jfreefrag *)(wk)) #define WK_SBDEP(wk) ((struct sbdep *)(wk)) #define WK_JTRUNC(wk) ((struct jtrunc *)(wk)) #define WK_JFSYNC(wk) ((struct jfsync *)(wk)) /* * Various types of lists */ LIST_HEAD(dirremhd, dirrem); LIST_HEAD(diraddhd, diradd); LIST_HEAD(newblkhd, newblk); LIST_HEAD(inodedephd, inodedep); LIST_HEAD(allocindirhd, allocindir); LIST_HEAD(allocdirecthd, allocdirect); TAILQ_HEAD(allocdirectlst, allocdirect); LIST_HEAD(indirdephd, indirdep); LIST_HEAD(jaddrefhd, jaddref); LIST_HEAD(jremrefhd, jremref); LIST_HEAD(jmvrefhd, jmvref); LIST_HEAD(jnewblkhd, jnewblk); LIST_HEAD(jblkdephd, jblkdep); LIST_HEAD(freeworkhd, freework); TAILQ_HEAD(freeworklst, freework); TAILQ_HEAD(jseglst, jseg); TAILQ_HEAD(inoreflst, inoref); TAILQ_HEAD(freeblklst, freeblks); /* * The "pagedep" structure tracks the various dependencies related to * a particular directory page. If a directory page has any dependencies, * it will have a pagedep linked to its associated buffer. The * pd_dirremhd list holds the list of dirrem requests which decrement * inode reference counts. These requests are processed after the * directory page with the corresponding zero'ed entries has been * written. The pd_diraddhd list maintains the list of diradd requests * which cannot be committed until their corresponding inode has been * written to disk. Because a directory may have many new entries * being created, several lists are maintained hashed on bits of the * offset of the entry into the directory page to keep the lists from * getting too long. Once a new directory entry has been cleared to * be written, it is moved to the pd_pendinghd list. After the new * entry has been written to disk it is removed from the pd_pendinghd * list, any removed operations are done, and the dependency structure * is freed. */ #define DAHASHSZ 5 #define DIRADDHASH(offset) (((offset) >> 2) % DAHASHSZ) struct pagedep { struct worklist pd_list; /* page buffer */ # define pd_state pd_list.wk_state /* check for multiple I/O starts */ LIST_ENTRY(pagedep) pd_hash; /* hashed lookup */ ino_t pd_ino; /* associated file */ ufs_lbn_t pd_lbn; /* block within file */ struct newdirblk *pd_newdirblk; /* associated newdirblk if NEWBLOCK */ struct dirremhd pd_dirremhd; /* dirrem's waiting for page */ struct diraddhd pd_diraddhd[DAHASHSZ]; /* diradd dir entry updates */ struct diraddhd pd_pendinghd; /* directory entries awaiting write */ struct jmvrefhd pd_jmvrefhd; /* Dependent journal writes. */ }; /* * The "inodedep" structure tracks the set of dependencies associated * with an inode. One task that it must manage is delayed operations * (i.e., work requests that must be held until the inodedep's associated * inode has been written to disk). Getting an inode from its incore * state to the disk requires two steps to be taken by the filesystem * in this order: first the inode must be copied to its disk buffer by * the VOP_UPDATE operation; second the inode's buffer must be written * to disk. To ensure that both operations have happened in the required * order, the inodedep maintains two lists. Delayed operations are * placed on the id_inowait list. When the VOP_UPDATE is done, all * operations on the id_inowait list are moved to the id_bufwait list. * When the buffer is written, the items on the id_bufwait list can be * safely moved to the work queue to be processed. A second task of the * inodedep structure is to track the status of block allocation within * the inode. Each block that is allocated is represented by an * "allocdirect" structure (see below). It is linked onto the id_newinoupdt * list until both its contents and its allocation in the cylinder * group map have been written to disk. Once these dependencies have been * satisfied, it is removed from the id_newinoupdt list and any followup * actions such as releasing the previous block or fragment are placed * on the id_inowait list. When an inode is updated (a VOP_UPDATE is * done), the "inodedep" structure is linked onto the buffer through * its worklist. Thus, it will be notified when the buffer is about * to be written and when it is done. At the update time, all the * elements on the id_newinoupdt list are moved to the id_inoupdt list * since those changes are now relevant to the copy of the inode in the * buffer. Also at update time, the tasks on the id_inowait list are * moved to the id_bufwait list so that they will be executed when * the updated inode has been written to disk. When the buffer containing * the inode is written to disk, any updates listed on the id_inoupdt * list are rolled back as they are not yet safe. Following the write, * the changes are once again rolled forward and any actions on the * id_bufwait list are processed (since those actions are now safe). * The entries on the id_inoupdt and id_newinoupdt lists must be kept * sorted by logical block number to speed the calculation of the size * of the rolled back inode (see explanation in initiate_write_inodeblock). * When a directory entry is created, it is represented by a diradd. * The diradd is added to the id_inowait list as it cannot be safely * written to disk until the inode that it represents is on disk. After * the inode is written, the id_bufwait list is processed and the diradd * entries are moved to the id_pendinghd list where they remain until * the directory block containing the name has been written to disk. * The purpose of keeping the entries on the id_pendinghd list is so that * the softdep_fsync function can find and push the inode's directory * name(s) as part of the fsync operation for that file. */ struct inodedep { struct worklist id_list; /* buffer holding inode block */ # define id_state id_list.wk_state /* inode dependency state */ LIST_ENTRY(inodedep) id_hash; /* hashed lookup */ TAILQ_ENTRY(inodedep) id_unlinked; /* Unlinked but ref'd inodes */ struct fs *id_fs; /* associated filesystem */ ino_t id_ino; /* dependent inode */ nlink_t id_nlinkdelta; /* saved effective link count */ nlink_t id_nlinkwrote; /* i_nlink that we wrote to disk */ nlink_t id_savednlink; /* Link saved during rollback */ LIST_ENTRY(inodedep) id_deps; /* bmsafemap's list of inodedep's */ struct bmsafemap *id_bmsafemap; /* related bmsafemap (if pending) */ struct diradd *id_mkdiradd; /* diradd for a mkdir. */ struct inoreflst id_inoreflst; /* Inode reference adjustments. */ long id_savedextsize; /* ext size saved during rollback */ off_t id_savedsize; /* file size saved during rollback */ struct dirremhd id_dirremhd; /* Removals pending. */ struct workhead id_pendinghd; /* entries awaiting directory write */ struct workhead id_bufwait; /* operations after inode written */ struct workhead id_inowait; /* operations waiting inode update */ struct allocdirectlst id_inoupdt; /* updates before inode written */ struct allocdirectlst id_newinoupdt; /* updates when inode written */ struct allocdirectlst id_extupdt; /* extdata updates pre-inode write */ struct allocdirectlst id_newextupdt; /* extdata updates at ino write */ struct freeblklst id_freeblklst; /* List of partial truncates. */ union { struct ufs1_dinode *idu_savedino1; /* saved ufs1_dinode contents */ struct ufs2_dinode *idu_savedino2; /* saved ufs2_dinode contents */ } id_un; }; #define id_savedino1 id_un.idu_savedino1 #define id_savedino2 id_un.idu_savedino2 /* * A "bmsafemap" structure maintains a list of dependency structures * that depend on the update of a particular cylinder group map. * It has lists for newblks, allocdirects, allocindirs, and inodedeps. * It is attached to the buffer of a cylinder group block when any of * these things are allocated from the cylinder group. It is freed * after the cylinder group map is written and the state of its * dependencies are updated with DEPCOMPLETE to indicate that it has * been processed. */ struct bmsafemap { struct worklist sm_list; /* cylgrp buffer */ # define sm_state sm_list.wk_state LIST_ENTRY(bmsafemap) sm_hash; /* Hash links. */ LIST_ENTRY(bmsafemap) sm_next; /* Mount list. */ int sm_cg; struct buf *sm_buf; /* associated buffer */ struct allocdirecthd sm_allocdirecthd; /* allocdirect deps */ struct allocdirecthd sm_allocdirectwr; /* writing allocdirect deps */ struct allocindirhd sm_allocindirhd; /* allocindir deps */ struct allocindirhd sm_allocindirwr; /* writing allocindir deps */ struct inodedephd sm_inodedephd; /* inodedep deps */ struct inodedephd sm_inodedepwr; /* writing inodedep deps */ struct newblkhd sm_newblkhd; /* newblk deps */ struct newblkhd sm_newblkwr; /* writing newblk deps */ struct jaddrefhd sm_jaddrefhd; /* Pending inode allocations. */ struct jnewblkhd sm_jnewblkhd; /* Pending block allocations. */ struct workhead sm_freehd; /* Freedep deps. */ struct workhead sm_freewr; /* Written freedeps. */ }; /* * A "newblk" structure is attached to a bmsafemap structure when a block * or fragment is allocated from a cylinder group. Its state is set to * DEPCOMPLETE when its cylinder group map is written. It is converted to * an allocdirect or allocindir allocation once the allocator calls the * appropriate setup function. It will initially be linked onto a bmsafemap * list. Once converted it can be linked onto the lists described for * allocdirect or allocindir as described below. */ struct newblk { struct worklist nb_list; /* See comment above. */ # define nb_state nb_list.wk_state LIST_ENTRY(newblk) nb_hash; /* Hashed lookup. */ LIST_ENTRY(newblk) nb_deps; /* Bmsafemap's list of newblks. */ struct jnewblk *nb_jnewblk; /* New block journal entry. */ struct bmsafemap *nb_bmsafemap;/* Cylgrp dep (if pending). */ struct freefrag *nb_freefrag; /* Fragment to be freed (if any). */ struct indirdephd nb_indirdeps; /* Children indirect blocks. */ struct workhead nb_newdirblk; /* Dir block to notify when written. */ struct workhead nb_jwork; /* Journal work pending. */ ufs2_daddr_t nb_newblkno; /* New value of block pointer. */ }; /* * An "allocdirect" structure is attached to an "inodedep" when a new block * or fragment is allocated and pointed to by the inode described by * "inodedep". The worklist is linked to the buffer that holds the block. * When the block is first allocated, it is linked to the bmsafemap * structure associated with the buffer holding the cylinder group map * from which it was allocated. When the cylinder group map is written * to disk, ad_state has the DEPCOMPLETE flag set. When the block itself * is written, the COMPLETE flag is set. Once both the cylinder group map * and the data itself have been written, it is safe to write the inode * that claims the block. If there was a previous fragment that had been * allocated before the file was increased in size, the old fragment may * be freed once the inode claiming the new block is written to disk. * This ad_fragfree request is attached to the id_inowait list of the * associated inodedep (pointed to by ad_inodedep) for processing after * the inode is written. When a block is allocated to a directory, an * fsync of a file whose name is within that block must ensure not only * that the block containing the file name has been written, but also * that the on-disk inode references that block. When a new directory * block is created, we allocate a newdirblk structure which is linked * to the associated allocdirect (on its ad_newdirblk list). When the * allocdirect has been satisfied, the newdirblk structure is moved to * the inodedep id_bufwait list of its directory to await the inode * being written. When the inode is written, the directory entries are * fully committed and can be deleted from their pagedep->id_pendinghd * and inodedep->id_pendinghd lists. */ struct allocdirect { struct newblk ad_block; /* Common block logic */ # define ad_list ad_block.nb_list /* block pointer worklist */ # define ad_state ad_list.wk_state /* block pointer state */ TAILQ_ENTRY(allocdirect) ad_next; /* inodedep's list of allocdirect's */ struct inodedep *ad_inodedep; /* associated inodedep */ ufs2_daddr_t ad_oldblkno; /* old value of block pointer */ int ad_offset; /* Pointer offset in parent. */ long ad_newsize; /* size of new block */ long ad_oldsize; /* size of old block */ }; #define ad_newblkno ad_block.nb_newblkno #define ad_freefrag ad_block.nb_freefrag #define ad_newdirblk ad_block.nb_newdirblk /* * A single "indirdep" structure manages all allocation dependencies for * pointers in an indirect block. The up-to-date state of the indirect * block is stored in ir_savedata. The set of pointers that may be safely * written to the disk is stored in ir_savebp. The state field is used * only to track whether the buffer is currently being written (in which * case it is not safe to update ir_savebp). Ir_deplisthd contains the * list of allocindir structures, one for each block that needs to be * written to disk. Once the block and its bitmap allocation have been * written the safecopy can be updated to reflect the allocation and the * allocindir structure freed. If ir_state indicates that an I/O on the * indirect block is in progress when ir_savebp is to be updated, the * update is deferred by placing the allocindir on the ir_donehd list. * When the I/O on the indirect block completes, the entries on the * ir_donehd list are processed by updating their corresponding ir_savebp * pointers and then freeing the allocindir structure. */ struct indirdep { struct worklist ir_list; /* buffer holding indirect block */ # define ir_state ir_list.wk_state /* indirect block pointer state */ LIST_ENTRY(indirdep) ir_next; /* alloc{direct,indir} list */ TAILQ_HEAD(, freework) ir_trunc; /* List of truncations. */ caddr_t ir_saveddata; /* buffer cache contents */ struct buf *ir_savebp; /* buffer holding safe copy */ struct buf *ir_bp; /* buffer holding live copy */ struct allocindirhd ir_completehd; /* waiting for indirdep complete */ struct allocindirhd ir_writehd; /* Waiting for the pointer write. */ struct allocindirhd ir_donehd; /* done waiting to update safecopy */ struct allocindirhd ir_deplisthd; /* allocindir deps for this block */ struct freeblks *ir_freeblks; /* Freeblks that frees this indir. */ }; /* * An "allocindir" structure is attached to an "indirdep" when a new block * is allocated and pointed to by the indirect block described by the * "indirdep". The worklist is linked to the buffer that holds the new block. * When the block is first allocated, it is linked to the bmsafemap * structure associated with the buffer holding the cylinder group map * from which it was allocated. When the cylinder group map is written * to disk, ai_state has the DEPCOMPLETE flag set. When the block itself * is written, the COMPLETE flag is set. Once both the cylinder group map * and the data itself have been written, it is safe to write the entry in * the indirect block that claims the block; the "allocindir" dependency * can then be freed as it is no longer applicable. */ struct allocindir { struct newblk ai_block; /* Common block area */ # define ai_state ai_block.nb_list.wk_state /* indirect pointer state */ LIST_ENTRY(allocindir) ai_next; /* indirdep's list of allocindir's */ struct indirdep *ai_indirdep; /* address of associated indirdep */ ufs2_daddr_t ai_oldblkno; /* old value of block pointer */ ufs_lbn_t ai_lbn; /* Logical block number. */ int ai_offset; /* Pointer offset in parent. */ }; #define ai_newblkno ai_block.nb_newblkno #define ai_freefrag ai_block.nb_freefrag #define ai_newdirblk ai_block.nb_newdirblk /* * The allblk union is used to size the newblk structure on allocation so * that it may be any one of three types. */ union allblk { struct allocindir ab_allocindir; struct allocdirect ab_allocdirect; struct newblk ab_newblk; }; /* * A "freefrag" structure is attached to an "inodedep" when a previously * allocated fragment is replaced with a larger fragment, rather than extended. * The "freefrag" structure is constructed and attached when the replacement * block is first allocated. It is processed after the inode claiming the * bigger block that replaces it has been written to disk. */ struct freefrag { struct worklist ff_list; /* id_inowait or delayed worklist */ # define ff_state ff_list.wk_state struct worklist *ff_jdep; /* Associated journal entry. */ struct workhead ff_jwork; /* Journal work pending. */ ufs2_daddr_t ff_blkno; /* fragment physical block number */ long ff_fragsize; /* size of fragment being deleted */ ino_t ff_inum; /* owning inode number */ __enum_uint8(vtype) ff_vtype; /* owning inode's file type */ int ff_key; /* trim key when deleted */ }; /* * A "freeblks" structure is attached to an "inodedep" when the * corresponding file's length is reduced to zero. It records all * the information needed to free the blocks of a file after its * zero'ed inode has been written to disk. The actual work is done * by child freework structures which are responsible for individual * inode pointers while freeblks is responsible for retiring the * entire operation when it is complete and holding common members. */ struct freeblks { struct worklist fb_list; /* id_inowait or delayed worklist */ # define fb_state fb_list.wk_state /* inode and dirty block state */ TAILQ_ENTRY(freeblks) fb_next; /* List of inode truncates. */ struct jblkdephd fb_jblkdephd; /* Journal entries pending */ struct workhead fb_freeworkhd; /* Work items pending */ struct workhead fb_jwork; /* Journal work pending */ struct vnode *fb_devvp; /* filesystem device vnode */ #ifdef QUOTA struct dquot *fb_quota[MAXQUOTAS]; /* quotas to be adjusted */ #endif uint64_t fb_modrev; /* Inode revision at start of trunc. */ off_t fb_len; /* Length we're truncating to. */ ufs2_daddr_t fb_chkcnt; /* Blocks released. */ ino_t fb_inum; /* inode owner of blocks */ __enum_uint8(vtype) fb_vtype; /* inode owner's file type */ uid_t fb_uid; /* uid of previous owner of blocks */ int fb_ref; /* Children outstanding. */ int fb_cgwait; /* cg writes outstanding. */ }; /* * A "freework" structure handles the release of a tree of blocks or a single * block. Each indirect block in a tree is allocated its own freework * structure so that the indirect block may be freed only when all of its * children are freed. In this way we enforce the rule that an allocated * block must have a valid path to a root that is journaled. Each child * block acquires a reference and when the ref hits zero the parent ref * is decremented. If there is no parent the freeblks ref is decremented. */ struct freework { struct worklist fw_list; /* Delayed worklist. */ # define fw_state fw_list.wk_state LIST_ENTRY(freework) fw_segs; /* Seg list. */ TAILQ_ENTRY(freework) fw_next; /* Hash/Trunc list. */ struct jnewblk *fw_jnewblk; /* Journal entry to cancel. */ struct freeblks *fw_freeblks; /* Root of operation. */ struct freework *fw_parent; /* Parent indirect. */ struct indirdep *fw_indir; /* indirect block. */ ufs2_daddr_t fw_blkno; /* Our block #. */ ufs_lbn_t fw_lbn; /* Original lbn before free. */ uint16_t fw_frags; /* Number of frags. */ uint16_t fw_ref; /* Number of children out. */ uint16_t fw_off; /* Current working position. */ uint16_t fw_start; /* Start of partial truncate. */ }; /* * A "freedep" structure is allocated to track the completion of a bitmap * write for a freework. One freedep may cover many freed blocks so long * as they reside in the same cylinder group. When the cg is written * the freedep decrements the ref on the freework which may permit it * to be freed as well. */ struct freedep { struct worklist fd_list; /* Delayed worklist. */ struct freework *fd_freework; /* Parent freework. */ }; /* * A "freefile" structure is attached to an inode when its * link count is reduced to zero. It marks the inode as free in * the cylinder group map after the zero'ed inode has been written * to disk and any associated blocks and fragments have been freed. */ struct freefile { struct worklist fx_list; /* id_inowait or delayed worklist */ mode_t fx_mode; /* mode of inode */ ino_t fx_oldinum; /* inum of the unlinked file */ struct vnode *fx_devvp; /* filesystem device vnode */ struct workhead fx_jwork; /* journal work pending. */ }; /* * A "diradd" structure is linked to an "inodedep" id_inowait list when a * new directory entry is allocated that references the inode described * by "inodedep". When the inode itself is written (either the initial * allocation for new inodes or with the increased link count for * existing inodes), the COMPLETE flag is set in da_state. If the entry * is for a newly allocated inode, the "inodedep" structure is associated * with a bmsafemap which prevents the inode from being written to disk * until the cylinder group has been updated. Thus the da_state COMPLETE * flag cannot be set until the inode bitmap dependency has been removed. * When creating a new file, it is safe to write the directory entry that * claims the inode once the referenced inode has been written. Since * writing the inode clears the bitmap dependencies, the DEPCOMPLETE flag * in the diradd can be set unconditionally when creating a file. When * creating a directory, there are two additional dependencies described by * mkdir structures (see their description below). When these dependencies * are resolved the DEPCOMPLETE flag is set in the diradd structure. * If there are multiple links created to the same inode, there will be * a separate diradd structure created for each link. The diradd is * linked onto the pg_diraddhd list of the pagedep for the directory * page that contains the entry. When a directory page is written, * the pg_diraddhd list is traversed to rollback any entries that are * not yet ready to be written to disk. If a directory entry is being * changed (by rename) rather than added, the DIRCHG flag is set and * the da_previous entry points to the entry that will be "removed" * once the new entry has been committed. During rollback, entries * with da_previous are replaced with the previous inode number rather * than zero. * * The overlaying of da_pagedep and da_previous is done to keep the * structure down. If a da_previous entry is present, the pointer to its * pagedep is available in the associated dirrem entry. If the DIRCHG flag * is set, the da_previous entry is valid; if not set the da_pagedep entry * is valid. The DIRCHG flag never changes; it is set when the structure * is created if appropriate and is never cleared. */ struct diradd { struct worklist da_list; /* id_inowait or id_pendinghd list */ # define da_state da_list.wk_state /* state of the new directory entry */ LIST_ENTRY(diradd) da_pdlist; /* pagedep holding directory block */ doff_t da_offset; /* offset of new dir entry in dir blk */ ino_t da_newinum; /* inode number for the new dir entry */ union { struct dirrem *dau_previous; /* entry being replaced in dir change */ struct pagedep *dau_pagedep; /* pagedep dependency for addition */ } da_un; struct workhead da_jwork; /* Journal work awaiting completion. */ }; #define da_previous da_un.dau_previous #define da_pagedep da_un.dau_pagedep /* * Two "mkdir" structures are needed to track the additional dependencies * associated with creating a new directory entry. Normally a directory * addition can be committed as soon as the newly referenced inode has been * written to disk with its increased link count. When a directory is * created there are two additional dependencies: writing the directory * data block containing the "." and ".." entries (MKDIR_BODY) and writing * the parent inode with the increased link count for ".." (MKDIR_PARENT). * These additional dependencies are tracked by two mkdir structures that * reference the associated "diradd" structure. When they have completed, * they set the DEPCOMPLETE flag on the diradd so that it knows that its * extra dependencies have been completed. The md_state field is used only * to identify which type of dependency the mkdir structure is tracking. * It is not used in the mainline code for any purpose other than consistency * checking. All the mkdir structures in the system are linked together on * a list. This list is needed so that a diradd can find its associated * mkdir structures and deallocate them if it is prematurely freed (as for * example if a mkdir is immediately followed by a rmdir of the same directory). * Here, the free of the diradd must traverse the list to find the associated * mkdir structures that reference it. The deletion would be faster if the * diradd structure were simply augmented to have two pointers that referenced * the associated mkdir's. However, this would increase the size of the diradd * structure to speed a very infrequent operation. */ struct mkdir { struct worklist md_list; /* id_inowait or buffer holding dir */ # define md_state md_list.wk_state /* type: MKDIR_PARENT or MKDIR_BODY */ struct diradd *md_diradd; /* associated diradd */ struct jaddref *md_jaddref; /* dependent jaddref. */ struct buf *md_buf; /* MKDIR_BODY: buffer holding dir */ LIST_ENTRY(mkdir) md_mkdirs; /* list of all mkdirs */ }; /* * A "dirrem" structure describes an operation to decrement the link * count on an inode. The dirrem structure is attached to the pg_dirremhd * list of the pagedep for the directory page that contains the entry. * It is processed after the directory page with the deleted entry has * been written to disk. */ struct dirrem { struct worklist dm_list; /* delayed worklist */ # define dm_state dm_list.wk_state /* state of the old directory entry */ LIST_ENTRY(dirrem) dm_next; /* pagedep's list of dirrem's */ LIST_ENTRY(dirrem) dm_inonext; /* inodedep's list of dirrem's */ struct jremrefhd dm_jremrefhd; /* Pending remove reference deps. */ ino_t dm_oldinum; /* inum of the removed dir entry */ doff_t dm_offset; /* offset of removed dir entry in blk */ union { struct pagedep *dmu_pagedep; /* pagedep dependency for remove */ ino_t dmu_dirinum; /* parent inode number (for rmdir) */ } dm_un; struct workhead dm_jwork; /* Journal work awaiting completion. */ }; #define dm_pagedep dm_un.dmu_pagedep #define dm_dirinum dm_un.dmu_dirinum /* * A "newdirblk" structure tracks the progress of a newly allocated * directory block from its creation until it is claimed by its on-disk * inode. When a block is allocated to a directory, an fsync of a file * whose name is within that block must ensure not only that the block * containing the file name has been written, but also that the on-disk * inode references that block. When a new directory block is created, * we allocate a newdirblk structure which is linked to the associated * allocdirect (on its ad_newdirblk list). When the allocdirect has been * satisfied, the newdirblk structure is moved to the inodedep id_bufwait * list of its directory to await the inode being written. When the inode * is written, the directory entries are fully committed and can be * deleted from their pagedep->id_pendinghd and inodedep->id_pendinghd * lists. Note that we could track directory blocks allocated to indirect * blocks using a similar scheme with the allocindir structures. Rather * than adding this level of complexity, we simply write those newly * allocated indirect blocks synchronously as such allocations are rare. * In the case of a new directory the . and .. links are tracked with * a mkdir rather than a pagedep. In this case we track the mkdir * so it can be released when it is written. A workhead is used * to simplify canceling a mkdir that is removed by a subsequent dirrem. */ struct newdirblk { struct worklist db_list; /* id_inowait or pg_newdirblk */ # define db_state db_list.wk_state struct pagedep *db_pagedep; /* associated pagedep */ struct workhead db_mkdir; }; /* * The inoref structure holds the elements common to jaddref and jremref * so they may easily be queued in-order on the inodedep. */ struct inoref { struct worklist if_list; /* Journal pending or jseg entries. */ # define if_state if_list.wk_state TAILQ_ENTRY(inoref) if_deps; /* Links for inodedep. */ struct jsegdep *if_jsegdep; /* Will track our journal record. */ off_t if_diroff; /* Directory offset. */ ino_t if_ino; /* Inode number. */ ino_t if_parent; /* Parent inode number. */ nlink_t if_nlink; /* nlink before addition. */ uint16_t if_mode; /* File mode, needed for IFMT. */ }; /* * A "jaddref" structure tracks a new reference (link count) on an inode * and prevents the link count increase and bitmap allocation until a * journal entry can be written. Once the journal entry is written, * the inode is put on the pendinghd of the bmsafemap and a diradd or * mkdir entry is placed on the bufwait list of the inode. The DEPCOMPLETE * flag is used to indicate that all of the required information for writing * the journal entry is present. MKDIR_BODY and MKDIR_PARENT are used to * differentiate . and .. links from regular file names. NEWBLOCK indicates * a bitmap is still pending. If a new reference is canceled by a delete * prior to writing the journal the jaddref write is canceled and the * structure persists to prevent any disk-visible changes until it is * ultimately released when the file is freed or the link is dropped again. */ struct jaddref { struct inoref ja_ref; /* see inoref above. */ # define ja_list ja_ref.if_list /* Jrnl pending, id_inowait, dm_jwork.*/ # define ja_state ja_ref.if_list.wk_state LIST_ENTRY(jaddref) ja_bmdeps; /* Links for bmsafemap. */ union { struct diradd *jau_diradd; /* Pending diradd. */ struct mkdir *jau_mkdir; /* MKDIR_{PARENT,BODY} */ } ja_un; }; #define ja_diradd ja_un.jau_diradd #define ja_mkdir ja_un.jau_mkdir #define ja_diroff ja_ref.if_diroff #define ja_ino ja_ref.if_ino #define ja_parent ja_ref.if_parent #define ja_mode ja_ref.if_mode /* * A "jremref" structure tracks a removed reference (unlink) on an * inode and prevents the directory remove from proceeding until the * journal entry is written. Once the journal has been written the remove * may proceed as normal. */ struct jremref { struct inoref jr_ref; /* see inoref above. */ # define jr_list jr_ref.if_list /* Linked to softdep_journal_pending. */ # define jr_state jr_ref.if_list.wk_state LIST_ENTRY(jremref) jr_deps; /* Links for dirrem. */ struct dirrem *jr_dirrem; /* Back pointer to dirrem. */ }; /* * A "jmvref" structure tracks a name relocations within the same * directory block that occur as a result of directory compaction. * It prevents the updated directory entry from being written to disk * until the journal entry is written. Once the journal has been * written the compacted directory may be written to disk. */ struct jmvref { struct worklist jm_list; /* Linked to softdep_journal_pending. */ LIST_ENTRY(jmvref) jm_deps; /* Jmvref on pagedep. */ struct pagedep *jm_pagedep; /* Back pointer to pagedep. */ ino_t jm_parent; /* Containing directory inode number. */ ino_t jm_ino; /* Inode number of our entry. */ off_t jm_oldoff; /* Our old offset in directory. */ off_t jm_newoff; /* Our new offset in directory. */ }; /* * A "jnewblk" structure tracks a newly allocated block or fragment and * prevents the direct or indirect block pointer as well as the cg bitmap * from being written until it is logged. After it is logged the jsegdep * is attached to the allocdirect or allocindir until the operation is * completed or reverted. If the operation is reverted prior to the journal * write the jnewblk structure is maintained to prevent the bitmaps from * reaching the disk. Ultimately the jnewblk structure will be passed * to the free routine as the in memory cg is modified back to the free * state at which time it can be released. It may be held on any of the * fx_jwork, fw_jwork, fb_jwork, ff_jwork, nb_jwork, or ir_jwork lists. */ struct jnewblk { struct worklist jn_list; /* See lists above. */ # define jn_state jn_list.wk_state struct jsegdep *jn_jsegdep; /* Will track our journal record. */ LIST_ENTRY(jnewblk) jn_deps; /* Jnewblks on sm_jnewblkhd. */ struct worklist *jn_dep; /* Dependency to ref completed seg. */ ufs_lbn_t jn_lbn; /* Lbn to which allocated. */ ufs2_daddr_t jn_blkno; /* Blkno allocated */ ino_t jn_ino; /* Ino to which allocated. */ int jn_oldfrags; /* Previous fragments when extended. */ int jn_frags; /* Number of fragments. */ }; /* * A "jblkdep" structure tracks jfreeblk and jtrunc records attached to a * freeblks structure. */ struct jblkdep { struct worklist jb_list; /* For softdep journal pending. */ struct jsegdep *jb_jsegdep; /* Reference to the jseg. */ struct freeblks *jb_freeblks; /* Back pointer to freeblks. */ LIST_ENTRY(jblkdep) jb_deps; /* Dep list on freeblks. */ }; /* * A "jfreeblk" structure tracks the journal write for freeing a block * or tree of blocks. The block pointer must not be cleared in the inode * or indirect prior to the jfreeblk being written to the journal. */ struct jfreeblk { struct jblkdep jf_dep; /* freeblks linkage. */ ufs_lbn_t jf_lbn; /* Lbn from which blocks freed. */ ufs2_daddr_t jf_blkno; /* Blkno being freed. */ ino_t jf_ino; /* Ino from which blocks freed. */ int jf_frags; /* Number of frags being freed. */ }; /* * A "jfreefrag" tracks the freeing of a single block when a fragment is * extended or an indirect page is replaced. It is not part of a larger * freeblks operation. */ struct jfreefrag { struct worklist fr_list; /* Linked to softdep_journal_pending. */ # define fr_state fr_list.wk_state struct jsegdep *fr_jsegdep; /* Will track our journal record. */ struct freefrag *fr_freefrag; /* Back pointer to freefrag. */ ufs_lbn_t fr_lbn; /* Lbn from which frag freed. */ ufs2_daddr_t fr_blkno; /* Blkno being freed. */ ino_t fr_ino; /* Ino from which frag freed. */ int fr_frags; /* Size of frag being freed. */ }; /* * A "jtrunc" journals the intent to truncate an inode's data or extent area. */ struct jtrunc { struct jblkdep jt_dep; /* freeblks linkage. */ off_t jt_size; /* Final file size. */ int jt_extsize; /* Final extent size. */ ino_t jt_ino; /* Ino being truncated. */ }; /* * A "jfsync" journals the completion of an fsync which invalidates earlier * jtrunc records in the journal. */ struct jfsync { struct worklist jfs_list; /* For softdep journal pending. */ off_t jfs_size; /* Sync file size. */ int jfs_extsize; /* Sync extent size. */ ino_t jfs_ino; /* ino being synced. */ }; /* * A "jsegdep" structure tracks a single reference to a written journal * segment so the journal space can be reclaimed when all dependencies * have been written. It can hang off of id_inowait, dm_jwork, da_jwork, * nb_jwork, ff_jwork, or fb_jwork lists. */ struct jsegdep { struct worklist jd_list; /* See above for lists. */ # define jd_state jd_list.wk_state struct jseg *jd_seg; /* Our journal record. */ }; /* * A "jseg" structure contains all of the journal records written in a * single disk write. The jaddref and jremref structures are linked into * js_entries so thay may be completed when the write completes. The * js_entries also include the write dependency structures: jmvref, * jnewblk, jfreeblk, jfreefrag, and jtrunc. The js_refs field counts * the number of entries on the js_entries list. Thus there is a single * jseg entry to describe each journal write. */ struct jseg { struct worklist js_list; /* b_deps link for journal */ # define js_state js_list.wk_state struct workhead js_entries; /* Entries awaiting write */ LIST_HEAD(, freework) js_indirs;/* List of indirects in this seg. */ TAILQ_ENTRY(jseg) js_next; /* List of all unfinished segments. */ struct jblocks *js_jblocks; /* Back pointer to block/seg list */ struct buf *js_buf; /* Buffer while unwritten */ uint64_t js_seq; /* Journal record sequence number. */ uint64_t js_oldseq; /* Oldest valid sequence number. */ int js_size; /* Size of journal record in bytes. */ int js_cnt; /* Total items allocated. */ int js_refs; /* Count of js_entries items. */ }; /* * A 'sbdep' structure tracks the head of the free inode list and * superblock writes. This makes sure the superblock is always pointing at * the first possible unlinked inode for the suj recovery process. If a * block write completes and we discover a new head is available the buf * is dirtied and the dep is kept. See the description of the UNLINK* * flags above for more details. */ struct sbdep { struct worklist sb_list; /* b_dep linkage */ struct fs *sb_fs; /* Filesystem pointer within buf. */ struct ufsmount *sb_ump; /* Our mount structure */ }; /* * Private journaling structures. */ struct jblocks { struct jseglst jb_segs; /* TAILQ of current segments. */ struct jseg *jb_writeseg; /* Next write to complete. */ struct jseg *jb_oldestseg; /* Oldest segment with valid entries. */ struct jextent *jb_extent; /* Extent array. */ uint64_t jb_nextseq; /* Next sequence number. */ uint64_t jb_oldestwrseq; /* Oldest written sequence number. */ uint8_t jb_needseg; /* Need a forced segment. */ uint8_t jb_suspended; /* Did journal suspend writes? */ int jb_avail; /* Available extents. */ int jb_used; /* Last used extent. */ int jb_head; /* Allocator head. */ int jb_off; /* Allocator extent offset. */ int jb_blocks; /* Total disk blocks covered. */ int jb_free; /* Total disk blocks free. */ int jb_min; /* Minimum free space. */ int jb_low; /* Low on space. */ int jb_age; /* Insertion time of oldest rec. */ }; struct jextent { ufs2_daddr_t je_daddr; /* Disk block address. */ int je_blocks; /* Disk block count. */ }; /* * Hash table declarations. */ LIST_HEAD(mkdirlist, mkdir); LIST_HEAD(pagedep_hashhead, pagedep); LIST_HEAD(inodedep_hashhead, inodedep); LIST_HEAD(newblk_hashhead, newblk); LIST_HEAD(bmsafemap_hashhead, bmsafemap); TAILQ_HEAD(indir_hashhead, freework); /* * Per-filesystem soft dependency data. * Allocated at mount and freed at unmount. */ struct mount_softdeps { struct rwlock sd_fslock; /* softdep lock */ struct workhead sd_workitem_pending; /* softdep work queue */ struct worklist *sd_worklist_tail; /* Tail pointer for above */ struct workhead sd_journal_pending; /* journal work queue */ struct worklist *sd_journal_tail; /* Tail pointer for above */ struct jblocks *sd_jblocks; /* Journal block information */ struct inodedeplst sd_unlinked; /* Unlinked inodes */ struct bmsafemaphd sd_dirtycg; /* Dirty CGs */ struct mkdirlist sd_mkdirlisthd; /* Track mkdirs */ struct pagedep_hashhead *sd_pdhash; /* pagedep hash table */ u_long sd_pdhashsize; /* pagedep hash table size-1 */ long sd_pdnextclean; /* next hash bucket to clean */ struct inodedep_hashhead *sd_idhash; /* inodedep hash table */ u_long sd_idhashsize; /* inodedep hash table size-1 */ long sd_idnextclean; /* next hash bucket to clean */ struct newblk_hashhead *sd_newblkhash; /* newblk hash table */ u_long sd_newblkhashsize; /* newblk hash table size-1 */ struct bmsafemap_hashhead *sd_bmhash; /* bmsafemap hash table */ u_long sd_bmhashsize; /* bmsafemap hash table size-1*/ struct indir_hashhead *sd_indirhash; /* indir hash table */ uint64_t sd_indirhashsize; /* indir hash table size-1 */ int sd_on_journal; /* Items on the journal list */ int sd_on_worklist; /* Items on the worklist */ int sd_deps; /* Total dependency count */ int sd_accdeps; /* accumulated dep count */ int sd_req; /* Wakeup when deps hits 0. */ int sd_flags; /* comm with flushing thread */ int sd_cleanups; /* Calls to cleanup */ struct thread *sd_flushtd; /* thread handling flushing */ TAILQ_ENTRY(mount_softdeps) sd_next; /* List of softdep filesystem */ struct ufsmount *sd_ump; /* our ufsmount structure */ uint64_t sd_curdeps[D_LAST + 1]; /* count of current deps */ struct workhead sd_alldeps[D_LAST + 1];/* Lists of all deps */ }; /* * Flags for communicating with the syncer thread. */ #define FLUSH_EXIT 0x0001 /* time to exit */ #define FLUSH_CLEANUP 0x0002 /* need to clear out softdep structures */ #define FLUSH_STARTING 0x0004 /* flush thread not yet started */ #define FLUSH_RC_ACTIVE 0x0008 /* a thread is flushing the mount point */ #define FLUSH_DI_ACTIVE 0x0010 /* a thread is processing delayed inactivations */ /* * Keep the old names from when these were in the ufsmount structure. */ #define softdep_workitem_pending um_softdep->sd_workitem_pending #define softdep_worklist_tail um_softdep->sd_worklist_tail #define softdep_journal_pending um_softdep->sd_journal_pending #define softdep_journal_tail um_softdep->sd_journal_tail #define softdep_jblocks um_softdep->sd_jblocks #define softdep_unlinked um_softdep->sd_unlinked #define softdep_dirtycg um_softdep->sd_dirtycg #define softdep_mkdirlisthd um_softdep->sd_mkdirlisthd #define pagedep_hashtbl um_softdep->sd_pdhash #define pagedep_hash_size um_softdep->sd_pdhashsize #define pagedep_nextclean um_softdep->sd_pdnextclean #define inodedep_hashtbl um_softdep->sd_idhash #define inodedep_hash_size um_softdep->sd_idhashsize #define inodedep_nextclean um_softdep->sd_idnextclean #define newblk_hashtbl um_softdep->sd_newblkhash #define newblk_hash_size um_softdep->sd_newblkhashsize #define bmsafemap_hashtbl um_softdep->sd_bmhash #define bmsafemap_hash_size um_softdep->sd_bmhashsize #define indir_hashtbl um_softdep->sd_indirhash #define indir_hash_size um_softdep->sd_indirhashsize #define softdep_on_journal um_softdep->sd_on_journal #define softdep_on_worklist um_softdep->sd_on_worklist #define softdep_deps um_softdep->sd_deps #define softdep_accdeps um_softdep->sd_accdeps #define softdep_req um_softdep->sd_req #define softdep_flags um_softdep->sd_flags #define softdep_flushtd um_softdep->sd_flushtd #define softdep_curdeps um_softdep->sd_curdeps #define softdep_alldeps um_softdep->sd_alldeps
