diff options
Diffstat (limited to 'fs/reiserfs/journal.c')
-rw-r--r-- | fs/reiserfs/journal.c | 6855 |
1 files changed, 3598 insertions, 3257 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index d1bcf0da6728..c66c27ec4100 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -55,7 +55,6 @@ #include <linux/writeback.h> #include <linux/blkdev.h> - /* gets a struct reiserfs_journal_list * from a list head */ #define JOURNAL_LIST_ENTRY(h) (list_entry((h), struct reiserfs_journal_list, \ j_list)) @@ -69,55 +68,61 @@ static int reiserfs_mounted_fs_count; static struct workqueue_struct *commit_wq; -#define JOURNAL_TRANS_HALF 1018 /* must be correct to keep the desc and commit - structs at 4k */ -#define BUFNR 64 /*read ahead */ +#define JOURNAL_TRANS_HALF 1018 /* must be correct to keep the desc and commit + structs at 4k */ +#define BUFNR 64 /*read ahead */ /* cnode stat bits. Move these into reiserfs_fs.h */ #define BLOCK_FREED 2 /* this block was freed, and can't be written. */ -#define BLOCK_FREED_HOLDER 3 /* this block was freed during this transaction, and can't be written */ +#define BLOCK_FREED_HOLDER 3 /* this block was freed during this transaction, and can't be written */ #define BLOCK_NEEDS_FLUSH 4 /* used in flush_journal_list */ #define BLOCK_DIRTIED 5 - /* journal list state bits */ #define LIST_TOUCHED 1 #define LIST_DIRTY 2 -#define LIST_COMMIT_PENDING 4 /* someone will commit this list */ +#define LIST_COMMIT_PENDING 4 /* someone will commit this list */ /* flags for do_journal_end */ #define FLUSH_ALL 1 /* flush commit and real blocks */ #define COMMIT_NOW 2 /* end and commit this transaction */ -#define WAIT 4 /* wait for the log blocks to hit the disk*/ - -static int do_journal_end(struct reiserfs_transaction_handle *,struct super_block *,unsigned long nblocks,int flags) ; -static int flush_journal_list(struct super_block *s, struct reiserfs_journal_list *jl, int flushall) ; -static int flush_commit_list(struct super_block *s, struct reiserfs_journal_list *jl, int flushall) ; -static int can_dirty(struct reiserfs_journal_cnode *cn) ; -static int journal_join(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks); -static int release_journal_dev( struct super_block *super, - struct reiserfs_journal *journal ); +#define WAIT 4 /* wait for the log blocks to hit the disk */ + +static int do_journal_end(struct reiserfs_transaction_handle *, + struct super_block *, unsigned long nblocks, + int flags); +static int flush_journal_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall); +static int flush_commit_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall); +static int can_dirty(struct reiserfs_journal_cnode *cn); +static int journal_join(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks); +static int release_journal_dev(struct super_block *super, + struct reiserfs_journal *journal); static int dirty_one_transaction(struct super_block *s, - struct reiserfs_journal_list *jl); + struct reiserfs_journal_list *jl); static void flush_async_commits(void *p); static void queue_log_writer(struct super_block *s); /* values for join in do_journal_begin_r */ enum { - JBEGIN_REG = 0, /* regular journal begin */ - JBEGIN_JOIN = 1, /* join the running transaction if at all possible */ - JBEGIN_ABORT = 2, /* called from cleanup code, ignores aborted flag */ + JBEGIN_REG = 0, /* regular journal begin */ + JBEGIN_JOIN = 1, /* join the running transaction if at all possible */ + JBEGIN_ABORT = 2, /* called from cleanup code, ignores aborted flag */ }; static int do_journal_begin_r(struct reiserfs_transaction_handle *th, - struct super_block * p_s_sb, - unsigned long nblocks,int join); + struct super_block *p_s_sb, + unsigned long nblocks, int join); -static void init_journal_hash(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - memset(journal->j_hash_table, 0, JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)) ; +static void init_journal_hash(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + memset(journal->j_hash_table, 0, + JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)); } /* @@ -125,149 +130,159 @@ static void init_journal_hash(struct super_block *p_s_sb) { ** make schedule happen after I've freed a block. Look at remove_from_transaction and journal_mark_freed for ** more details. */ -static int reiserfs_clean_and_file_buffer(struct buffer_head *bh) { - if (bh) { - clear_buffer_dirty(bh); - clear_buffer_journal_test(bh); - } - return 0 ; +static int reiserfs_clean_and_file_buffer(struct buffer_head *bh) +{ + if (bh) { + clear_buffer_dirty(bh); + clear_buffer_journal_test(bh); + } + return 0; } static void disable_barrier(struct super_block *s) { - REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_BARRIER_FLUSH); - printk("reiserfs: disabling flush barriers on %s\n", reiserfs_bdevname(s)); -} - -static struct reiserfs_bitmap_node * -allocate_bitmap_node(struct super_block *p_s_sb) { - struct reiserfs_bitmap_node *bn ; - static int id; - - bn = reiserfs_kmalloc(sizeof(struct reiserfs_bitmap_node), GFP_NOFS, p_s_sb) ; - if (!bn) { - return NULL ; - } - bn->data = reiserfs_kmalloc(p_s_sb->s_blocksize, GFP_NOFS, p_s_sb) ; - if (!bn->data) { - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - return NULL ; - } - bn->id = id++ ; - memset(bn->data, 0, p_s_sb->s_blocksize) ; - INIT_LIST_HEAD(&bn->list) ; - return bn ; -} - -static struct reiserfs_bitmap_node * -get_bitmap_node(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_bitmap_node *bn = NULL; - struct list_head *entry = journal->j_bitmap_nodes.next ; - - journal->j_used_bitmap_nodes++ ; -repeat: - - if(entry != &journal->j_bitmap_nodes) { - bn = list_entry(entry, struct reiserfs_bitmap_node, list) ; - list_del(entry) ; - memset(bn->data, 0, p_s_sb->s_blocksize) ; - journal->j_free_bitmap_nodes-- ; - return bn ; - } - bn = allocate_bitmap_node(p_s_sb) ; - if (!bn) { - yield(); - goto repeat ; - } - return bn ; + REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_BARRIER_FLUSH); + printk("reiserfs: disabling flush barriers on %s\n", + reiserfs_bdevname(s)); +} + +static struct reiserfs_bitmap_node *allocate_bitmap_node(struct super_block + *p_s_sb) +{ + struct reiserfs_bitmap_node *bn; + static int id; + + bn = reiserfs_kmalloc(sizeof(struct reiserfs_bitmap_node), GFP_NOFS, + p_s_sb); + if (!bn) { + return NULL; + } + bn->data = reiserfs_kmalloc(p_s_sb->s_blocksize, GFP_NOFS, p_s_sb); + if (!bn->data) { + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + return NULL; + } + bn->id = id++; + memset(bn->data, 0, p_s_sb->s_blocksize); + INIT_LIST_HEAD(&bn->list); + return bn; +} + +static struct reiserfs_bitmap_node *get_bitmap_node(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_bitmap_node *bn = NULL; + struct list_head *entry = journal->j_bitmap_nodes.next; + + journal->j_used_bitmap_nodes++; + repeat: + + if (entry != &journal->j_bitmap_nodes) { + bn = list_entry(entry, struct reiserfs_bitmap_node, list); + list_del(entry); + memset(bn->data, 0, p_s_sb->s_blocksize); + journal->j_free_bitmap_nodes--; + return bn; + } + bn = allocate_bitmap_node(p_s_sb); + if (!bn) { + yield(); + goto repeat; + } + return bn; } static inline void free_bitmap_node(struct super_block *p_s_sb, - struct reiserfs_bitmap_node *bn) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - journal->j_used_bitmap_nodes-- ; - if (journal->j_free_bitmap_nodes > REISERFS_MAX_BITMAP_NODES) { - reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb) ; - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - } else { - list_add(&bn->list, &journal->j_bitmap_nodes) ; - journal->j_free_bitmap_nodes++ ; - } -} - -static void allocate_bitmap_nodes(struct super_block *p_s_sb) { - int i ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_bitmap_node *bn = NULL ; - for (i = 0 ; i < REISERFS_MIN_BITMAP_NODES ; i++) { - bn = allocate_bitmap_node(p_s_sb) ; - if (bn) { - list_add(&bn->list, &journal->j_bitmap_nodes) ; - journal->j_free_bitmap_nodes++ ; - } else { - break ; // this is ok, we'll try again when more are needed - } - } + struct reiserfs_bitmap_node *bn) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + journal->j_used_bitmap_nodes--; + if (journal->j_free_bitmap_nodes > REISERFS_MAX_BITMAP_NODES) { + reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb); + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + } else { + list_add(&bn->list, &journal->j_bitmap_nodes); + journal->j_free_bitmap_nodes++; + } +} + +static void allocate_bitmap_nodes(struct super_block *p_s_sb) +{ + int i; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_bitmap_node *bn = NULL; + for (i = 0; i < REISERFS_MIN_BITMAP_NODES; i++) { + bn = allocate_bitmap_node(p_s_sb); + if (bn) { + list_add(&bn->list, &journal->j_bitmap_nodes); + journal->j_free_bitmap_nodes++; + } else { + break; // this is ok, we'll try again when more are needed + } + } } static int set_bit_in_list_bitmap(struct super_block *p_s_sb, int block, - struct reiserfs_list_bitmap *jb) { - int bmap_nr = block / (p_s_sb->s_blocksize << 3) ; - int bit_nr = block % (p_s_sb->s_blocksize << 3) ; + struct reiserfs_list_bitmap *jb) +{ + int bmap_nr = block / (p_s_sb->s_blocksize << 3); + int bit_nr = block % (p_s_sb->s_blocksize << 3); - if (!jb->bitmaps[bmap_nr]) { - jb->bitmaps[bmap_nr] = get_bitmap_node(p_s_sb) ; - } - set_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data) ; - return 0 ; + if (!jb->bitmaps[bmap_nr]) { + jb->bitmaps[bmap_nr] = get_bitmap_node(p_s_sb); + } + set_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data); + return 0; } static void cleanup_bitmap_list(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb) { - int i; - if (jb->bitmaps == NULL) - return; - - for (i = 0 ; i < SB_BMAP_NR(p_s_sb) ; i++) { - if (jb->bitmaps[i]) { - free_bitmap_node(p_s_sb, jb->bitmaps[i]) ; - jb->bitmaps[i] = NULL ; - } - } + struct reiserfs_list_bitmap *jb) +{ + int i; + if (jb->bitmaps == NULL) + return; + + for (i = 0; i < SB_BMAP_NR(p_s_sb); i++) { + if (jb->bitmaps[i]) { + free_bitmap_node(p_s_sb, jb->bitmaps[i]); + jb->bitmaps[i] = NULL; + } + } } /* ** only call this on FS unmount. */ static int free_list_bitmaps(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb_array) { - int i ; - struct reiserfs_list_bitmap *jb ; - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - jb = jb_array + i ; - jb->journal_list = NULL ; - cleanup_bitmap_list(p_s_sb, jb) ; - vfree(jb->bitmaps) ; - jb->bitmaps = NULL ; - } - return 0; -} - -static int free_bitmap_nodes(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct list_head *next = journal->j_bitmap_nodes.next ; - struct reiserfs_bitmap_node *bn ; - - while(next != &journal->j_bitmap_nodes) { - bn = list_entry(next, struct reiserfs_bitmap_node, list) ; - list_del(next) ; - reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb) ; - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - next = journal->j_bitmap_nodes.next ; - journal->j_free_bitmap_nodes-- ; - } - - return 0 ; + struct reiserfs_list_bitmap *jb_array) +{ + int i; + struct reiserfs_list_bitmap *jb; + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + jb = jb_array + i; + jb->journal_list = NULL; + cleanup_bitmap_list(p_s_sb, jb); + vfree(jb->bitmaps); + jb->bitmaps = NULL; + } + return 0; +} + +static int free_bitmap_nodes(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct list_head *next = journal->j_bitmap_nodes.next; + struct reiserfs_bitmap_node *bn; + + while (next != &journal->j_bitmap_nodes) { + bn = list_entry(next, struct reiserfs_bitmap_node, list); + list_del(next); + reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb); + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + next = journal->j_bitmap_nodes.next; + journal->j_free_bitmap_nodes--; + } + + return 0; } /* @@ -275,59 +290,65 @@ static int free_bitmap_nodes(struct super_block *p_s_sb) { ** jb_array is the array to be filled in. */ int reiserfs_allocate_list_bitmaps(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb_array, - int bmap_nr) { - int i ; - int failed = 0 ; - struct reiserfs_list_bitmap *jb ; - int mem = bmap_nr * sizeof(struct reiserfs_bitmap_node *) ; - - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - jb = jb_array + i ; - jb->journal_list = NULL ; - jb->bitmaps = vmalloc( mem ) ; - if (!jb->bitmaps) { - reiserfs_warning(p_s_sb, "clm-2000, unable to allocate bitmaps for journal lists") ; - failed = 1; - break ; - } - memset(jb->bitmaps, 0, mem) ; - } - if (failed) { - free_list_bitmaps(p_s_sb, jb_array) ; - return -1 ; - } - return 0 ; + struct reiserfs_list_bitmap *jb_array, + int bmap_nr) +{ + int i; + int failed = 0; + struct reiserfs_list_bitmap *jb; + int mem = bmap_nr * sizeof(struct reiserfs_bitmap_node *); + + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + jb = jb_array + i; + jb->journal_list = NULL; + jb->bitmaps = vmalloc(mem); + if (!jb->bitmaps) { + reiserfs_warning(p_s_sb, + "clm-2000, unable to allocate bitmaps for journal lists"); + failed = 1; + break; + } + memset(jb->bitmaps, 0, mem); + } + if (failed) { + free_list_bitmaps(p_s_sb, jb_array); + return -1; + } + return 0; } /* ** find an available list bitmap. If you can't find one, flush a commit list ** and try again */ -static struct reiserfs_list_bitmap * -get_list_bitmap(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { - int i,j ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_list_bitmap *jb = NULL ; - - for (j = 0 ; j < (JOURNAL_NUM_BITMAPS * 3) ; j++) { - i = journal->j_list_bitmap_index ; - journal->j_list_bitmap_index = (i + 1) % JOURNAL_NUM_BITMAPS ; - jb = journal->j_list_bitmap + i ; - if (journal->j_list_bitmap[i].journal_list) { - flush_commit_list(p_s_sb, journal->j_list_bitmap[i].journal_list, 1) ; - if (!journal->j_list_bitmap[i].journal_list) { - break ; - } - } else { - break ; - } - } - if (jb->journal_list) { /* double check to make sure if flushed correctly */ - return NULL ; - } - jb->journal_list = jl ; - return jb ; +static struct reiserfs_list_bitmap *get_list_bitmap(struct super_block *p_s_sb, + struct reiserfs_journal_list + *jl) +{ + int i, j; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_list_bitmap *jb = NULL; + + for (j = 0; j < (JOURNAL_NUM_BITMAPS * 3); j++) { + i = journal->j_list_bitmap_index; + journal->j_list_bitmap_index = (i + 1) % JOURNAL_NUM_BITMAPS; + jb = journal->j_list_bitmap + i; + if (journal->j_list_bitmap[i].journal_list) { + flush_commit_list(p_s_sb, + journal->j_list_bitmap[i]. + journal_list, 1); + if (!journal->j_list_bitmap[i].journal_list) { + break; + } + } else { + break; + } + } + if (jb->journal_list) { /* double check to make sure if flushed correctly */ + return NULL; + } + jb->journal_list = jl; + return jb; } /* @@ -335,104 +356,114 @@ get_list_bitmap(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { ** Uses the cnode->next and cnode->prev pointers ** returns NULL on failure */ -static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes) { - struct reiserfs_journal_cnode *head ; - int i ; - if (num_cnodes <= 0) { - return NULL ; - } - head = vmalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode)) ; - if (!head) { - return NULL ; - } - memset(head, 0, num_cnodes * sizeof(struct reiserfs_journal_cnode)) ; - head[0].prev = NULL ; - head[0].next = head + 1 ; - for (i = 1 ; i < num_cnodes; i++) { - head[i].prev = head + (i - 1) ; - head[i].next = head + (i + 1) ; /* if last one, overwrite it after the if */ - } - head[num_cnodes -1].next = NULL ; - return head ; +static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes) +{ + struct reiserfs_journal_cnode *head; + int i; + if (num_cnodes <= 0) { + return NULL; + } + head = vmalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode)); + if (!head) { + return NULL; + } + memset(head, 0, num_cnodes * sizeof(struct reiserfs_journal_cnode)); + head[0].prev = NULL; + head[0].next = head + 1; + for (i = 1; i < num_cnodes; i++) { + head[i].prev = head + (i - 1); + head[i].next = head + (i + 1); /* if last one, overwrite it after the if */ + } + head[num_cnodes - 1].next = NULL; + return head; } /* ** pulls a cnode off the free list, or returns NULL on failure */ -static struct reiserfs_journal_cnode *get_cnode(struct super_block *p_s_sb) { - struct reiserfs_journal_cnode *cn ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - - reiserfs_check_lock_depth(p_s_sb, "get_cnode") ; - - if (journal->j_cnode_free <= 0) { - return NULL ; - } - journal->j_cnode_used++ ; - journal->j_cnode_free-- ; - cn = journal->j_cnode_free_list ; - if (!cn) { - return cn ; - } - if (cn->next) { - cn->next->prev = NULL ; - } - journal->j_cnode_free_list = cn->next ; - memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; - return cn ; +static struct reiserfs_journal_cnode *get_cnode(struct super_block *p_s_sb) +{ + struct reiserfs_journal_cnode *cn; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + + reiserfs_check_lock_depth(p_s_sb, "get_cnode"); + + if (journal->j_cnode_free <= 0) { + return NULL; + } + journal->j_cnode_used++; + journal->j_cnode_free--; + cn = journal->j_cnode_free_list; + if (!cn) { + return cn; + } + if (cn->next) { + cn->next->prev = NULL; + } + journal->j_cnode_free_list = cn->next; + memset(cn, 0, sizeof(struct reiserfs_journal_cnode)); + return cn; } /* ** returns a cnode to the free list */ -static void free_cnode(struct super_block *p_s_sb, struct reiserfs_journal_cnode *cn) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); +static void free_cnode(struct super_block *p_s_sb, + struct reiserfs_journal_cnode *cn) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - reiserfs_check_lock_depth(p_s_sb, "free_cnode") ; + reiserfs_check_lock_depth(p_s_sb, "free_cnode"); - journal->j_cnode_used-- ; - journal->j_cnode_free++ ; - /* memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; */ - cn->next = journal->j_cnode_free_list ; - if (journal->j_cnode_free_list) { - journal->j_cnode_free_list->prev = cn ; - } - cn->prev = NULL ; /* not needed with the memset, but I might kill the memset, and forget to do this */ - journal->j_cnode_free_list = cn ; + journal->j_cnode_used--; + journal->j_cnode_free++; + /* memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; */ + cn->next = journal->j_cnode_free_list; + if (journal->j_cnode_free_list) { + journal->j_cnode_free_list->prev = cn; + } + cn->prev = NULL; /* not needed with the memset, but I might kill the memset, and forget to do this */ + journal->j_cnode_free_list = cn; } -static void clear_prepared_bits(struct buffer_head *bh) { - clear_buffer_journal_prepared (bh); - clear_buffer_journal_restore_dirty (bh); +static void clear_prepared_bits(struct buffer_head *bh) +{ + clear_buffer_journal_prepared(bh); + clear_buffer_journal_restore_dirty(bh); } /* utility function to force a BUG if it is called without the big ** kernel lock held. caller is the string printed just before calling BUG() */ -void reiserfs_check_lock_depth(struct super_block *sb, char *caller) { +void reiserfs_check_lock_depth(struct super_block *sb, char *caller) +{ #ifdef CONFIG_SMP - if (current->lock_depth < 0) { - reiserfs_panic (sb, "%s called without kernel lock held", caller) ; - } + if (current->lock_depth < 0) { + reiserfs_panic(sb, "%s called without kernel lock held", + caller); + } #else - ; + ; #endif } /* return a cnode with same dev, block number and size in table, or null if not found */ -static inline struct reiserfs_journal_cnode * -get_journal_hash_dev(struct super_block *sb, - struct reiserfs_journal_cnode **table, - long bl) +static inline struct reiserfs_journal_cnode *get_journal_hash_dev(struct + super_block + *sb, + struct + reiserfs_journal_cnode + **table, + long bl) { - struct reiserfs_journal_cnode *cn ; - cn = journal_hash(table, sb, bl) ; - while(cn) { - if (cn->blocknr == bl && cn->sb == sb) - return cn ; - cn = cn->hnext ; - } - return (struct reiserfs_journal_cnode *)0 ; + struct reiserfs_journal_cnode *cn; + cn = journal_hash(table, sb, bl); + while (cn) { + if (cn->blocknr == bl && cn->sb == sb) + return cn; + cn = cn->hnext; + } + return (struct reiserfs_journal_cnode *)0; } /* @@ -454,91 +485,103 @@ get_journal_hash_dev(struct super_block *sb, ** */ int reiserfs_in_journal(struct super_block *p_s_sb, - int bmap_nr, int bit_nr, int search_all, - b_blocknr_t *next_zero_bit) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn ; - struct reiserfs_list_bitmap *jb ; - int i ; - unsigned long bl; - - *next_zero_bit = 0 ; /* always start this at zero. */ - - PROC_INFO_INC( p_s_sb, journal.in_journal ); - /* If we aren't doing a search_all, this is a metablock, and it will be logged before use. - ** if we crash before the transaction that freed it commits, this transaction won't - ** have committed either, and the block will never be written - */ - if (search_all) { - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - PROC_INFO_INC( p_s_sb, journal.in_journal_bitmap ); - jb = journal->j_list_bitmap + i ; - if (jb->journal_list && jb->bitmaps[bmap_nr] && - test_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data)) { - *next_zero_bit = find_next_zero_bit((unsigned long *) - (jb->bitmaps[bmap_nr]->data), - p_s_sb->s_blocksize << 3, bit_nr+1) ; - return 1 ; - } - } - } - - bl = bmap_nr * (p_s_sb->s_blocksize << 3) + bit_nr; - /* is it in any old transactions? */ - if (search_all && (cn = get_journal_hash_dev(p_s_sb, journal->j_list_hash_table, bl))) { - return 1; - } - - /* is it in the current transaction. This should never happen */ - if ((cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, bl))) { - BUG(); - return 1; - } - - PROC_INFO_INC( p_s_sb, journal.in_journal_reusable ); - /* safe for reuse */ - return 0 ; + int bmap_nr, int bit_nr, int search_all, + b_blocknr_t * next_zero_bit) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn; + struct reiserfs_list_bitmap *jb; + int i; + unsigned long bl; + + *next_zero_bit = 0; /* always start this at zero. */ + + PROC_INFO_INC(p_s_sb, journal.in_journal); + /* If we aren't doing a search_all, this is a metablock, and it will be logged before use. + ** if we crash before the transaction that freed it commits, this transaction won't + ** have committed either, and the block will never be written + */ + if (search_all) { + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + PROC_INFO_INC(p_s_sb, journal.in_journal_bitmap); + jb = journal->j_list_bitmap + i; + if (jb->journal_list && jb->bitmaps[bmap_nr] && + test_bit(bit_nr, + (unsigned long *)jb->bitmaps[bmap_nr]-> + data)) { + *next_zero_bit = + find_next_zero_bit((unsigned long *) + (jb->bitmaps[bmap_nr]-> + data), + p_s_sb->s_blocksize << 3, + bit_nr + 1); + return 1; + } + } + } + + bl = bmap_nr * (p_s_sb->s_blocksize << 3) + bit_nr; + /* is it in any old transactions? */ + if (search_all + && (cn = + get_journal_hash_dev(p_s_sb, journal->j_list_hash_table, bl))) { + return 1; + } + + /* is it in the current transaction. This should never happen */ + if ((cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, bl))) { + BUG(); + return 1; + } + + PROC_INFO_INC(p_s_sb, journal.in_journal_reusable); + /* safe for reuse */ + return 0; } /* insert cn into table */ -static inline void insert_journal_hash(struct reiserfs_journal_cnode **table, struct reiserfs_journal_cnode *cn) { - struct reiserfs_journal_cnode *cn_orig ; +static inline void insert_journal_hash(struct reiserfs_journal_cnode **table, + struct reiserfs_journal_cnode *cn) +{ + struct reiserfs_journal_cnode *cn_orig; - cn_orig = journal_hash(table, cn->sb, cn->blocknr) ; - cn->hnext = cn_orig ; - cn->hprev = NULL ; - if (cn_orig) { - cn_orig->hprev = cn ; - } - journal_hash(table, cn->sb, cn->blocknr) = cn ; + cn_orig = journal_hash(table, cn->sb, cn->blocknr); + cn->hnext = cn_orig; + cn->hprev = NULL; + if (cn_orig) { + cn_orig->hprev = cn; + } + journal_hash(table, cn->sb, cn->blocknr) = cn; } /* lock the current transaction */ -inline static void lock_journal(struct super_block *p_s_sb) { - PROC_INFO_INC( p_s_sb, journal.lock_journal ); - down(&SB_JOURNAL(p_s_sb)->j_lock); +inline static void lock_journal(struct super_block *p_s_sb) +{ + PROC_INFO_INC(p_s_sb, journal.lock_journal); + down(&SB_JOURNAL(p_s_sb)->j_lock); } /* unlock the current transaction */ -inline static void unlock_journal(struct super_block *p_s_sb) { - up(&SB_JOURNAL(p_s_sb)->j_lock); +inline static void unlock_journal(struct super_block *p_s_sb) +{ + up(&SB_JOURNAL(p_s_sb)->j_lock); } static inline void get_journal_list(struct reiserfs_journal_list *jl) { - jl->j_refcount++; + jl->j_refcount++; } static inline void put_journal_list(struct super_block *s, - struct reiserfs_journal_list *jl) + struct reiserfs_journal_list *jl) { - if (jl->j_refcount < 1) { - reiserfs_panic (s, "trans id %lu, refcount at %d", jl->j_trans_id, - jl->j_refcount); - } - if (--jl->j_refcount == 0) - reiserfs_kfree(jl, sizeof(struct reiserfs_journal_list), s); + if (jl->j_refcount < 1) { + reiserfs_panic(s, "trans id %lu, refcount at %d", + jl->j_trans_id, jl->j_refcount); + } + if (--jl->j_refcount == 0) + reiserfs_kfree(jl, sizeof(struct reiserfs_journal_list), s); } /* @@ -546,358 +589,375 @@ static inline void put_journal_list(struct super_block *s, ** it gets called by flush_commit_list, and cleans up any data stored about blocks freed during a ** transaction. */ -static void cleanup_freed_for_journal_list(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { +static void cleanup_freed_for_journal_list(struct super_block *p_s_sb, + struct reiserfs_journal_list *jl) +{ - struct reiserfs_list_bitmap *jb = jl->j_list_bitmap ; - if (jb) { - cleanup_bitmap_list(p_s_sb, jb) ; - } - jl->j_list_bitmap->journal_list = NULL ; - jl->j_list_bitmap = NULL ; + struct reiserfs_list_bitmap *jb = jl->j_list_bitmap; + if (jb) { + cleanup_bitmap_list(p_s_sb, jb); + } + jl->j_list_bitmap->journal_list = NULL; + jl->j_list_bitmap = NULL; } static int journal_list_still_alive(struct super_block *s, - unsigned long trans_id) -{ - struct reiserfs_journal *journal = SB_JOURNAL (s); - struct list_head *entry = &journal->j_journal_list; - struct reiserfs_journal_list *jl; - - if (!list_empty(entry)) { - jl = JOURNAL_LIST_ENTRY(entry->next); - if (jl->j_trans_id <= trans_id) { - return 1; - } - } - return 0; -} - -static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate) { - char b[BDEVNAME_SIZE]; - - if (buffer_journaled(bh)) { - reiserfs_warning(NULL, "clm-2084: pinned buffer %lu:%s sent to disk", - bh->b_blocknr, bdevname(bh->b_bdev, b)) ; - } - if (uptodate) - set_buffer_uptodate(bh) ; - else - clear_buffer_uptodate(bh) ; - unlock_buffer(bh) ; - put_bh(bh) ; -} - -static void reiserfs_end_ordered_io(struct buffer_head *bh, int uptodate) { - if (uptodate) - set_buffer_uptodate(bh) ; - else - clear_buffer_uptodate(bh) ; - unlock_buffer(bh) ; - put_bh(bh) ; -} - -static void submit_logged_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_buffer_io_sync ; - clear_buffer_journal_new (bh); - clear_buffer_dirty(bh) ; - if (!test_clear_buffer_journal_test (bh)) - BUG(); - if (!buffer_uptodate(bh)) - BUG(); - submit_bh(WRITE, bh) ; -} - -static void submit_ordered_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_ordered_io; - clear_buffer_dirty(bh) ; - if (!buffer_uptodate(bh)) - BUG(); - submit_bh(WRITE, bh) ; -} - -static int submit_barrier_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_ordered_io; - clear_buffer_dirty(bh) ; - if (!buffer_uptodate(bh)) - BUG(); - return submit_bh(WRITE_BARRIER, bh) ; + unsigned long trans_id) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + struct list_head *entry = &journal->j_journal_list; + struct reiserfs_journal_list *jl; + + if (!list_empty(entry)) { + jl = JOURNAL_LIST_ENTRY(entry->next); + if (jl->j_trans_id <= trans_id) { + return 1; + } + } + return 0; +} + +static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate) +{ + char b[BDEVNAME_SIZE]; + + if (buffer_journaled(bh)) { + reiserfs_warning(NULL, + "clm-2084: pinned buffer %lu:%s sent to disk", + bh->b_blocknr, bdevname(bh->b_bdev, b)); + } + if (uptodate) + set_buffer_uptodate(bh); + else + clear_buffer_uptodate(bh); + unlock_buffer(bh); + put_bh(bh); +} + +static void reiserfs_end_ordered_io(struct buffer_head *bh, int uptodate) +{ + if (uptodate) + set_buffer_uptodate(bh); + else + clear_buffer_uptodate(bh); + unlock_buffer(bh); + put_bh(bh); +} + +static void submit_logged_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_buffer_io_sync; + clear_buffer_journal_new(bh); + clear_buffer_dirty(bh); + if (!test_clear_buffer_journal_test(bh)) + BUG(); + if (!buffer_uptodate(bh)) + BUG(); + submit_bh(WRITE, bh); +} + +static void submit_ordered_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_ordered_io; + clear_buffer_dirty(bh); + if (!buffer_uptodate(bh)) + BUG(); + submit_bh(WRITE, bh); +} + +static int submit_barrier_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_ordered_io; + clear_buffer_dirty(bh); + if (!buffer_uptodate(bh)) + BUG(); + return submit_bh(WRITE_BARRIER, bh); } static void check_barrier_completion(struct super_block *s, - struct buffer_head *bh) { - if (buffer_eopnotsupp(bh)) { - clear_buffer_eopnotsupp(bh); - disable_barrier(s); - set_buffer_uptodate(bh); - set_buffer_dirty(bh); - sync_dirty_buffer(bh); - } + struct buffer_head *bh) +{ + if (buffer_eopnotsupp(bh)) { + clear_buffer_eopnotsupp(bh); + disable_barrier(s); + set_buffer_uptodate(bh); + set_buffer_dirty(bh); + sync_dirty_buffer(bh); + } } #define CHUNK_SIZE 32 struct buffer_chunk { - struct buffer_head *bh[CHUNK_SIZE]; - int nr; + struct buffer_head *bh[CHUNK_SIZE]; + int nr; }; -static void write_chunk(struct buffer_chunk *chunk) { - int i; - get_fs_excl(); - for (i = 0; i < chunk->nr ; i++) { - submit_logged_buffer(chunk->bh[i]) ; - } - chunk->nr = 0; - put_fs_excl(); +static void write_chunk(struct buffer_chunk *chunk) +{ + int i; + get_fs_excl(); + for (i = 0; i < chunk->nr; i++) { + submit_logged_buffer(chunk->bh[i]); + } + chunk->nr = 0; + put_fs_excl(); } -static void write_ordered_chunk(struct buffer_chunk *chunk) { - int i; - get_fs_excl(); - for (i = 0; i < chunk->nr ; i++) { - submit_ordered_buffer(chunk->bh[i]) ; - } - chunk->nr = 0; - put_fs_excl(); +static void write_ordered_chunk(struct buffer_chunk *chunk) +{ + int i; + get_fs_excl(); + for (i = 0; i < chunk->nr; i++) { + submit_ordered_buffer(chunk->bh[i]); + } + chunk->nr = 0; + put_fs_excl(); } static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh, - spinlock_t *lock, - void (fn)(struct buffer_chunk *)) + spinlock_t * lock, void (fn) (struct buffer_chunk *)) { - int ret = 0; - if (chunk->nr >= CHUNK_SIZE) - BUG(); - chunk->bh[chunk->nr++] = bh; - if (chunk->nr >= CHUNK_SIZE) { - ret = 1; - if (lock) - spin_unlock(lock); - fn(chunk); - if (lock) - spin_lock(lock); - } - return ret; + int ret = 0; + if (chunk->nr >= CHUNK_SIZE) + BUG(); + chunk->bh[chunk->nr++] = bh; + if (chunk->nr >= CHUNK_SIZE) { + ret = 1; + if (lock) + spin_unlock(lock); + fn(chunk); + if (lock) + spin_lock(lock); + } + return ret; } - static atomic_t nr_reiserfs_jh = ATOMIC_INIT(0); -static struct reiserfs_jh *alloc_jh(void) { - struct reiserfs_jh *jh; - while(1) { - jh = kmalloc(sizeof(*jh), GFP_NOFS); - if (jh) { - atomic_inc(&nr_reiserfs_jh); - return jh; +static struct reiserfs_jh *alloc_jh(void) +{ + struct reiserfs_jh *jh; + while (1) { + jh = kmalloc(sizeof(*jh), GFP_NOFS); + if (jh) { |