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-rw-r--r--fs/reiserfs/journal.c6855
1 files changed, 3598 insertions, 3257 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index d1bcf0da672..c66c27ec410 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) {