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nilfs2: use sb instance instead of nilfs_sb_info struct 

This replaces sbi uses with direct reference to sb instance.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2011-03-09 11:05:08 +09:00
parent d96bbfa28a
commit f7545144c2
7 changed files with 129 additions and 145 deletions
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10
fs/nilfs2/nilfs.h
View File

@ -295,11 +295,11 @@ extern int nilfs_check_feature_compatibility(struct super_block *,
struct nilfs_super_block *);
extern void nilfs_set_log_cursor(struct nilfs_super_block *,
struct the_nilfs *);
extern struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *,
int flip);
extern int nilfs_commit_super(struct nilfs_sb_info *, int);
extern int nilfs_cleanup_super(struct nilfs_sb_info *);
int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
int flip);
int nilfs_commit_super(struct super_block *sb, int flag);
int nilfs_cleanup_super(struct super_block *sb);
int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
struct nilfs_root **root);
int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno);

32
fs/nilfs2/recovery.c
View File

@ -425,7 +425,7 @@ void nilfs_dispose_segment_list(struct list_head *head)
}
static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
struct nilfs_sb_info *sbi,
struct super_block *sb,
struct nilfs_recovery_info *ri)
{
struct list_head *head = &ri->ri_used_segments;
@ -501,7 +501,7 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs,
}
static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
struct nilfs_sb_info *sbi,
struct super_block *sb,
struct nilfs_root *root,
struct list_head *head,
unsigned long *nr_salvaged_blocks)
@ -514,7 +514,7 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
int err = 0, err2 = 0;
list_for_each_entry_safe(rb, n, head, list) {
inode = nilfs_iget(sbi->s_super, root, rb->ino);
inode = nilfs_iget(sb, root, rb->ino);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
inode = NULL;
@ -572,11 +572,11 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
* nilfs_do_roll_forward - salvage logical segments newer than the latest
* checkpoint
* @nilfs: nilfs object
* @sbi: nilfs_sb_info
* @sb: super block instance
* @ri: pointer to a nilfs_recovery_info
*/
static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
struct nilfs_sb_info *sbi,
struct super_block *sb,
struct nilfs_root *root,
struct nilfs_recovery_info *ri)
{
@ -648,7 +648,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
goto failed;
if (flags & NILFS_SS_LOGEND) {
err = nilfs_recover_dsync_blocks(
nilfs, sbi, root, &dsync_blocks,
nilfs, sb, root, &dsync_blocks,
&nsalvaged_blocks);
if (unlikely(err))
goto failed;
@ -681,7 +681,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
if (nsalvaged_blocks) {
printk(KERN_INFO "NILFS (device %s): salvaged %lu blocks\n",
sbi->s_super->s_id, nsalvaged_blocks);
sb->s_id, nsalvaged_blocks);
ri->ri_need_recovery = NILFS_RECOVERY_ROLLFORWARD_DONE;
}
out:
@ -695,7 +695,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
printk(KERN_ERR
"NILFS (device %s): Error roll-forwarding "
"(err=%d, pseg block=%llu). ",
sbi->s_super->s_id, err, (unsigned long long)pseg_start);
sb->s_id, err, (unsigned long long)pseg_start);
goto out;
}
@ -724,7 +724,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs,
/**
* nilfs_salvage_orphan_logs - salvage logs written after the latest checkpoint
* @nilfs: nilfs object
* @sbi: nilfs_sb_info
* @sb: super block instance
* @ri: pointer to a nilfs_recovery_info struct to store search results.
*
* Return Value: On success, 0 is returned. On error, one of the following
@ -741,7 +741,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs,
* %-ENOMEM - Insufficient memory available.
*/
int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
struct nilfs_sb_info *sbi,
struct super_block *sb,
struct nilfs_recovery_info *ri)
{
struct nilfs_root *root;
@ -750,32 +750,32 @@ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
if (ri->ri_lsegs_start == 0 || ri->ri_lsegs_end == 0)
return 0;
err = nilfs_attach_checkpoint(sbi, ri->ri_cno, true, &root);
err = nilfs_attach_checkpoint(sb, ri->ri_cno, true, &root);
if (unlikely(err)) {
printk(KERN_ERR
"NILFS: error loading the latest checkpoint.\n");
return err;
}
err = nilfs_do_roll_forward(nilfs, sbi, root, ri);
err = nilfs_do_roll_forward(nilfs, sb, root, ri);
if (unlikely(err))
goto failed;
if (ri->ri_need_recovery == NILFS_RECOVERY_ROLLFORWARD_DONE) {
err = nilfs_prepare_segment_for_recovery(nilfs, sbi, ri);
err = nilfs_prepare_segment_for_recovery(nilfs, sb, ri);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: Error preparing segments for "
"recovery.\n");
goto failed;
}
err = nilfs_attach_segment_constructor(sbi, root);
err = nilfs_attach_log_writer(sb, root);
if (unlikely(err))
goto failed;
set_nilfs_discontinued(nilfs);
err = nilfs_construct_segment(sbi->s_super);
nilfs_detach_segment_constructor(sbi);
err = nilfs_construct_segment(sb);
nilfs_detach_log_writer(sb);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: Oops! recovery failed. "

90
fs/nilfs2/segment.c
View File

@ -181,7 +181,6 @@ int nilfs_transaction_begin(struct super_block *sb,
struct nilfs_transaction_info *ti,
int vacancy_check)
{
struct nilfs_sb_info *sbi;
struct the_nilfs *nilfs;
int ret = nilfs_prepare_segment_lock(ti);
@ -192,8 +191,7 @@ int nilfs_transaction_begin(struct super_block *sb,
vfs_check_frozen(sb, SB_FREEZE_WRITE);
sbi = NILFS_SB(sb);
nilfs = sbi->s_nilfs;
nilfs = NILFS_SB(sb)->s_nilfs;
down_read(&nilfs->ns_segctor_sem);
if (vacancy_check && nilfs_near_disk_full(nilfs)) {
up_read(&nilfs->ns_segctor_sem);
@ -290,12 +288,12 @@ void nilfs_relax_pressure_in_lock(struct super_block *sb)
downgrade_write(&nilfs->ns_segctor_sem);
}
static void nilfs_transaction_lock(struct nilfs_sb_info *sbi,
static void nilfs_transaction_lock(struct super_block *sb,
struct nilfs_transaction_info *ti,
int gcflag)
{
struct nilfs_transaction_info *cur_ti = current->journal_info;
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_sc_info *sci = nilfs->ns_writer;
WARN_ON(cur_ti);
@ -313,17 +311,17 @@ static void nilfs_transaction_lock(struct nilfs_sb_info *sbi,
nilfs_segctor_do_immediate_flush(sci);
up_write(&sbi->s_nilfs->ns_segctor_sem);
up_write(&nilfs->ns_segctor_sem);
yield();
}
if (gcflag)
ti->ti_flags |= NILFS_TI_GC;
}
static void nilfs_transaction_unlock(struct nilfs_sb_info *sbi)
static void nilfs_transaction_unlock(struct super_block *sb)
{
struct nilfs_transaction_info *ti = current->journal_info;
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC);
BUG_ON(ti->ti_count > 0);
@ -2292,8 +2290,7 @@ int nilfs_construct_segment(struct super_block *sb)
int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
loff_t start, loff_t end)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_sc_info *sci = nilfs->ns_writer;
struct nilfs_inode_info *ii;
struct nilfs_transaction_info ti;
@ -2302,14 +2299,14 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
if (!sci)
return -EROFS;
nilfs_transaction_lock(sbi, &ti, 0);
nilfs_transaction_lock(sb, &ti, 0);
ii = NILFS_I(inode);
if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) ||
nilfs_test_opt(nilfs, STRICT_ORDER) ||
test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
nilfs_discontinued(nilfs)) {
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sb);
err = nilfs_segctor_sync(sci);
return err;
}
@ -2318,7 +2315,7 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
!test_bit(NILFS_I_BUSY, &ii->i_state)) {
spin_unlock(&nilfs->ns_inode_lock);
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sb);
return 0;
}
spin_unlock(&nilfs->ns_inode_lock);
@ -2328,7 +2325,7 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC);
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sb);
return err;
}
@ -2384,8 +2381,7 @@ static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err)
*/
static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
{
struct nilfs_sb_info *sbi = NILFS_SB(sci->sc_super);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sci->sc_super)->s_nilfs;
struct nilfs_super_block **sbp;
int err = 0;
@ -2403,11 +2399,12 @@ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
nilfs_discontinued(nilfs)) {
down_write(&nilfs->ns_sem);
err = -EIO;
sbp = nilfs_prepare_super(sbi,
sbp = nilfs_prepare_super(sci->sc_super,
nilfs_sb_will_flip(nilfs));
if (likely(sbp)) {
nilfs_set_log_cursor(sbp[0], nilfs);
err = nilfs_commit_super(sbi, NILFS_SB_COMMIT);
err = nilfs_commit_super(sci->sc_super,
NILFS_SB_COMMIT);
}
up_write(&nilfs->ns_sem);
}
@ -2439,8 +2436,7 @@ nilfs_remove_written_gcinodes(struct the_nilfs *nilfs, struct list_head *head)
int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
void **kbufs)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_sc_info *sci = nilfs->ns_writer;
struct nilfs_transaction_info ti;
int err;
@ -2448,7 +2444,7 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
if (unlikely(!sci))
return -EROFS;
nilfs_transaction_lock(sbi, &ti, 1);
nilfs_transaction_lock(sb, &ti, 1);
err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat);
if (unlikely(err))
@ -2491,16 +2487,15 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
sci->sc_freesegs = NULL;
sci->sc_nfreesegs = 0;
nilfs_mdt_clear_shadow_map(nilfs->ns_dat);
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sb);
return err;
}
static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
{
struct nilfs_sb_info *sbi = NILFS_SB(sci->sc_super);
struct nilfs_transaction_info ti;
nilfs_transaction_lock(sbi, &ti, 0);
nilfs_transaction_lock(sci->sc_super, &ti, 0);
nilfs_segctor_construct(sci, mode);
/*
@ -2511,7 +2506,7 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags))
nilfs_segctor_start_timer(sci);
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sci->sc_super);
}
static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
@ -2668,17 +2663,17 @@ static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci)
/*
* Setup & clean-up functions
*/
static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
struct nilfs_root *root)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_sc_info *sci;
sci = kzalloc(sizeof(*sci), GFP_KERNEL);
if (!sci)
return NULL;
sci->sc_super = sbi->s_super;
sci->sc_super = sb;
nilfs_get_root(root);
sci->sc_root = root;
@ -2712,12 +2707,11 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
/* The segctord thread was stopped and its timer was removed.
But some tasks remain. */
do {
struct nilfs_sb_info *sbi = NILFS_SB(sci->sc_super);
struct nilfs_transaction_info ti;
nilfs_transaction_lock(sbi, &ti, 0);
nilfs_transaction_lock(sci->sc_super, &ti, 0);
ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
nilfs_transaction_unlock(sbi);
nilfs_transaction_unlock(sci->sc_super);
} while (ret && retrycount-- > 0);
}
@ -2766,22 +2760,21 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
}
/**
* nilfs_attach_segment_constructor - attach a segment constructor
* @sbi: nilfs_sb_info
* nilfs_attach_log_writer - attach log writer
* @sb: super block instance
* @root: root object of the current filesystem tree
*
* nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info,
* initializes it, and starts the segment constructor.
* This allocates a log writer object, initializes it, and starts the
* log writer.
*
* Return Value: On success, 0 is returned. On error, one of the following
* negative error code is returned.
*
* %-ENOMEM - Insufficient memory available.
*/
int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
struct nilfs_root *root)
int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
int err;
if (nilfs->ns_writer) {
@ -2790,10 +2783,10 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
* read/write after nilfs_error degenerated it into a
* read-only mount.
*/
nilfs_detach_segment_constructor(sbi);
nilfs_detach_log_writer(sb);
}
nilfs->ns_writer = nilfs_segctor_new(sbi, root);
nilfs->ns_writer = nilfs_segctor_new(sb, root);
if (!nilfs->ns_writer)
return -ENOMEM;
@ -2806,15 +2799,15 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
}
/**
* nilfs_detach_segment_constructor - destroy the segment constructor
* @sbi: nilfs_sb_info
* nilfs_detach_log_writer - destroy log writer
* @sb: super block instance
*
* nilfs_detach_segment_constructor() kills the segment constructor daemon,
* frees the struct nilfs_sc_info, and destroy the dirty file list.
* This kills log writer daemon, frees the log writer object, and
* destroys list of dirty files.
*/
void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi)
void nilfs_detach_log_writer(struct super_block *sb)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
LIST_HEAD(garbage_list);
down_write(&nilfs->ns_segctor_sem);
@ -2827,9 +2820,8 @@ void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi)
spin_lock(&nilfs->ns_inode_lock);
if (!list_empty(&nilfs->ns_dirty_files)) {
list_splice_init(&nilfs->ns_dirty_files, &garbage_list);
nilfs_warning(sbi->s_super, __func__,
"Non empty dirty list after the last "
"segment construction\n");
nilfs_warning(sb, __func__,
"Hit dirty file after stopped log writer\n");
}
spin_unlock(&nilfs->ns_inode_lock);
up_write(&nilfs->ns_segctor_sem);

10
fs/nilfs2/segment.h
View File

@ -233,18 +233,16 @@ extern void nilfs_flush_segment(struct super_block *, ino_t);
extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *,
void **);
int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
struct nilfs_root *root);
extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *);
int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root);
void nilfs_detach_log_writer(struct super_block *sb);
/* recovery.c */
extern int nilfs_read_super_root_block(struct the_nilfs *, sector_t,
struct buffer_head **, int);
extern int nilfs_search_super_root(struct the_nilfs *,
struct nilfs_recovery_info *);
extern int nilfs_salvage_orphan_logs(struct the_nilfs *,
struct nilfs_sb_info *,
struct nilfs_recovery_info *);
int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, struct super_block *sb,
struct nilfs_recovery_info *ri);
extern void nilfs_dispose_segment_list(struct list_head *);
#endif /* _NILFS_SEGMENT_H */

105
fs/nilfs2/super.c
View File

@ -71,23 +71,23 @@ struct kmem_cache *nilfs_transaction_cachep;
struct kmem_cache *nilfs_segbuf_cachep;
struct kmem_cache *nilfs_btree_path_cache;
static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount);
static int nilfs_setup_super(struct super_block *sb, int is_mount);
static int nilfs_remount(struct super_block *sb, int *flags, char *data);
static void nilfs_set_error(struct nilfs_sb_info *sbi)
static void nilfs_set_error(struct super_block *sb)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp;
down_write(&nilfs->ns_sem);
if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
nilfs->ns_mount_state |= NILFS_ERROR_FS;
sbp = nilfs_prepare_super(sbi, 0);
sbp = nilfs_prepare_super(sb, 0);
if (likely(sbp)) {
sbp[0]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
if (sbp[1])
sbp[1]->s_state |= cpu_to_le16(NILFS_ERROR_FS);
nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
}
}
up_write(&nilfs->ns_sem);
@ -108,7 +108,7 @@ static void nilfs_set_error(struct nilfs_sb_info *sbi)
void nilfs_error(struct super_block *sb, const char *function,
const char *fmt, ...)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct va_format vaf;
va_list args;
@ -123,7 +123,7 @@ void nilfs_error(struct super_block *sb, const char *function,
va_end(args);
if (!(sb->s_flags & MS_RDONLY)) {
nilfs_set_error(sbi);
nilfs_set_error(sb);
if (nilfs_test_opt(nilfs, ERRORS_RO)) {
printk(KERN_CRIT "Remounting filesystem read-only\n");
@ -188,9 +188,9 @@ void nilfs_destroy_inode(struct inode *inode)
call_rcu(&inode->i_rcu, nilfs_i_callback);
}
static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag)
static int nilfs_sync_super(struct super_block *sb, int flag)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
int err;
retry:
@ -262,10 +262,10 @@ void nilfs_set_log_cursor(struct nilfs_super_block *sbp,
spin_unlock(&nilfs->ns_last_segment_lock);
}
struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
int flip)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp = nilfs->ns_sbp;
/* nilfs->ns_sem must be locked by the caller. */
@ -275,7 +275,7 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
memcpy(sbp[0], sbp[1], nilfs->ns_sbsize);
} else {
printk(KERN_CRIT "NILFS: superblock broke on dev %s\n",
sbi->s_super->s_id);
sb->s_id);
return NULL;
}
} else if (sbp[1] &&
@ -289,9 +289,9 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi,
return sbp;
}
int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag)
int nilfs_commit_super(struct super_block *sb, int flag)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp = nilfs->ns_sbp;
time_t t;
@ -311,27 +311,28 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag)
nilfs->ns_sbsize));
}
clear_nilfs_sb_dirty(nilfs);
return nilfs_sync_super(sbi, flag);
return nilfs_sync_super(sb, flag);
}
/**
* nilfs_cleanup_super() - write filesystem state for cleanup
* @sbi: nilfs_sb_info to be unmounted or degraded to read-only
* @sb: super block instance to be unmounted or degraded to read-only
*
* This function restores state flags in the on-disk super block.
* This will set "clean" flag (i.e. NILFS_VALID_FS) unless the
* filesystem was not clean previously.
*/
int nilfs_cleanup_super(struct nilfs_sb_info *sbi)
int nilfs_cleanup_super(struct super_block *sb)
{
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp;
int flag = NILFS_SB_COMMIT;
int ret = -EIO;
sbp = nilfs_prepare_super(sbi, 0);
sbp = nilfs_prepare_super(sb, 0);
if (sbp) {
sbp[0]->s_state = cpu_to_le16(sbi->s_nilfs->ns_mount_state);
nilfs_set_log_cursor(sbp[0], sbi->s_nilfs);
sbp[0]->s_state = cpu_to_le16(nilfs->ns_mount_state);
nilfs_set_log_cursor(sbp[0], nilfs);
if (sbp[1] && sbp[0]->s_last_cno == sbp[1]->s_last_cno) {
/*
* make the "clean" flag also to the opposite
@ -341,7 +342,7 @@ int nilfs_cleanup_super(struct nilfs_sb_info *sbi)
sbp[1]->s_state = sbp[0]->s_state;
flag = NILFS_SB_COMMIT_ALL;
}
ret = nilfs_commit_super(sbi, flag);
ret = nilfs_commit_super(sb, flag);
}
return ret;
}
@ -351,11 +352,11 @@ static void nilfs_put_super(struct super_block *sb)
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
nilfs_detach_segment_constructor(sbi);
nilfs_detach_log_writer(sb);
if (!(sb->s_flags & MS_RDONLY)) {
down_write(&nilfs->ns_sem);
nilfs_cleanup_super(sbi);
nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
}
@ -371,8 +372,7 @@ static void nilfs_put_super(struct super_block *sb)
static int nilfs_sync_fs(struct super_block *sb, int wait)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp;
int err = 0;
@ -382,10 +382,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
down_write(&nilfs->ns_sem);
if (nilfs_sb_dirty(nilfs)) {
sbp = nilfs_prepare_super(sbi, nilfs_sb_will_flip(nilfs));
sbp = nilfs_prepare_super(sb, nilfs_sb_will_flip(nilfs));
if (likely(sbp)) {
nilfs_set_log_cursor(sbp[0], nilfs);
nilfs_commit_super(sbi, NILFS_SB_COMMIT);
nilfs_commit_super(sb, NILFS_SB_COMMIT);
}
}
up_write(&nilfs->ns_sem);
@ -393,10 +393,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
return err;
}
int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
struct nilfs_root **rootp)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_root *root;
struct nilfs_checkpoint *raw_cp;
struct buffer_head *bh_cp;
@ -425,7 +425,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
goto failed;
}
err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size,
err = nilfs_ifile_read(sb, root, nilfs->ns_inode_size,
&raw_cp->cp_ifile_inode, &root->ifile);
if (err)
goto failed_bh;
@ -449,8 +449,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
static int nilfs_freeze(struct super_block *sb)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
int err;
if (sb->s_flags & MS_RDONLY)
@ -458,21 +457,20 @@ static int nilfs_freeze(struct super_block *sb)
/* Mark super block clean */
down_write(&nilfs->ns_sem);
err = nilfs_cleanup_super(sbi);
err = nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
return err;
}
static int nilfs_unfreeze(struct super_block *sb)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
if (sb->s_flags & MS_RDONLY)
return 0;
down_write(&nilfs->ns_sem);
nilfs_setup_super(sbi, false);
nilfs_setup_super(sb, false);
up_write(&nilfs->ns_sem);
return 0;
}
@ -668,15 +666,15 @@ nilfs_set_default_options(struct super_block *sb,
NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER;
}
static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount)
static int nilfs_setup_super(struct super_block *sb, int is_mount)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct nilfs_super_block **sbp;
int max_mnt_count;
int mnt_count;
/* nilfs->ns_sem must be locked by the caller. */
sbp = nilfs_prepare_super(sbi, 0);
sbp = nilfs_prepare_super(sb, 0);
if (!sbp)
return -EIO;
@ -707,7 +705,7 @@ skip_mount_setup:
/* synchronize sbp[1] with sbp[0] */
if (sbp[1])
memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
return nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL);
return nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
}
struct nilfs_super_block *nilfs_read_super_block(struct super_block *sb,
@ -841,7 +839,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
goto out;
}
ret = nilfs_attach_checkpoint(NILFS_SB(s), cno, false, &root);
ret = nilfs_attach_checkpoint(s, cno, false, &root);
if (ret) {
printk(KERN_ERR "NILFS: error loading snapshot "
"(checkpoint number=%llu).\n",
@ -938,7 +936,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
}
sbi->s_nilfs = nilfs;
err = init_nilfs(nilfs, sbi, (char *)data);
err = init_nilfs(nilfs, sb, (char *)data);
if (err)
goto failed_nilfs;
@ -950,12 +948,12 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
sb->s_bdi = bdi ? : &default_backing_dev_info;
err = load_nilfs(nilfs, sbi);
err = load_nilfs(nilfs, sb);
if (err)
goto failed_nilfs;
cno = nilfs_last_cno(nilfs);
err = nilfs_attach_checkpoint(sbi, cno, true, &fsroot);
err = nilfs_attach_checkpoint(sb, cno, true, &fsroot);
if (err) {
printk(KERN_ERR "NILFS: error loading last checkpoint "
"(checkpoint number=%llu).\n", (unsigned long long)cno);
@ -963,7 +961,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
}
if (!(sb->s_flags & MS_RDONLY)) {
err = nilfs_attach_segment_constructor(sbi, fsroot);
err = nilfs_attach_log_writer(sb, fsroot);
if (err)
goto failed_checkpoint;
}
@ -976,14 +974,14 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
if (!(sb->s_flags & MS_RDONLY)) {
down_write(&nilfs->ns_sem);
nilfs_setup_super(sbi, true);
nilfs_setup_super(sb, true);
up_write(&nilfs->ns_sem);
}
return 0;
failed_segctor:
nilfs_detach_segment_constructor(sbi);
nilfs_detach_log_writer(sb);
failed_checkpoint:
nilfs_put_root(fsroot);
@ -1004,8 +1002,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
static int nilfs_remount(struct super_block *sb, int *flags, char *data)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
unsigned long old_sb_flags;
unsigned long old_mount_opt;
int err;
@ -1031,8 +1028,8 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
goto out;
if (*flags & MS_RDONLY) {
/* Shutting down the segment constructor */
nilfs_detach_segment_constructor(sbi);
/* Shutting down log writer */
nilfs_detach_log_writer(sb);
sb->s_flags |= MS_RDONLY;
/*
@ -1040,7 +1037,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
* the RDONLY flag and then mark the partition as valid again.
*/
down_write(&nilfs->ns_sem);
nilfs_cleanup_super(sbi);
nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
} else {
__u64 features;
@ -1067,12 +1064,12 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
sb->s_flags &= ~MS_RDONLY;
root = NILFS_I(sb->s_root->d_inode)->i_root;
err = nilfs_attach_segment_constructor(sbi, root);
err = nilfs_attach_log_writer(sb, root);
if (err)
goto restore_opts;
down_write(&nilfs->ns_sem);
nilfs_setup_super(sbi, true);
nilfs_setup_super(sb, true);
up_write(&nilfs->ns_sem);
}
out:

22
fs/nilfs2/the_nilfs.c
View File

@ -201,16 +201,16 @@ static int nilfs_store_log_cursor(struct the_nilfs *nilfs,
/**
* load_nilfs - load and recover the nilfs
* @nilfs: the_nilfs structure to be released
* @sbi: nilfs_sb_info used to recover past segment
* @sb: super block isntance used to recover past segment
*
* load_nilfs() searches and load the latest super root,
* attaches the last segment, and does recovery if needed.
* The caller must call this exclusively for simultaneous mounts.
*/
int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
{
struct nilfs_recovery_info ri;
unsigned int s_flags = sbi->s_super->s_flags;
unsigned int s_flags = sb->s_flags;
int really_read_only = bdev_read_only(nilfs->ns_bdev);
int valid_fs = nilfs_valid_fs(nilfs);
int err;
@ -275,7 +275,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
goto scan_error;
}
err = nilfs_load_super_root(nilfs, sbi->s_super, ri.ri_super_root);
err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: error loading super root.\n");
goto failed;
@ -308,7 +308,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
err = -EROFS;
goto failed_unload;
}
sbi->s_super->s_flags &= ~MS_RDONLY;
sb->s_flags &= ~MS_RDONLY;
} else if (nilfs_test_opt(nilfs, NORECOVERY)) {
printk(KERN_ERR "NILFS: recovery cancelled because norecovery "
"option was specified for a read/write mount\n");
@ -316,13 +316,13 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
goto failed_unload;
}
err = nilfs_salvage_orphan_logs(nilfs, sbi, &ri);
err = nilfs_salvage_orphan_logs(nilfs, sb, &ri);
if (err)
goto failed_unload;
down_write(&nilfs->ns_sem);
nilfs->ns_mount_state |= NILFS_VALID_FS; /* set "clean" flag */
err = nilfs_cleanup_super(sbi);
err = nilfs_cleanup_super(sb);
up_write(&nilfs->ns_sem);
if (err) {
@ -334,7 +334,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
skip_recovery:
nilfs_clear_recovery_info(&ri);
sbi->s_super->s_flags = s_flags;
sb->s_flags = s_flags;
return 0;
scan_error:
@ -348,7 +348,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
failed:
nilfs_clear_recovery_info(&ri);
sbi->s_super->s_flags = s_flags;
sb->s_flags = s_flags;
return err;
}
@ -526,7 +526,6 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
/**
* init_nilfs - initialize a NILFS instance.
* @nilfs: the_nilfs structure
* @sbi: nilfs_sb_info
* @sb: super block
* @data: mount options
*
@ -537,9 +536,8 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
* Return Value: On success, 0 is returned. On error, a negative error
* code is returned.
*/
int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
{
struct super_block *sb = sbi->s_super;
struct nilfs_super_block *sbp;
int blocksize;
int err;

5
fs/nilfs2/the_nilfs.h
View File

@ -267,15 +267,14 @@ static inline int nilfs_sb_will_flip(struct the_nilfs *nilfs)
void nilfs_set_last_segment(struct the_nilfs *, sector_t, u64, __u64);
struct the_nilfs *alloc_nilfs(struct block_device *bdev);
void destroy_nilfs(struct the_nilfs *nilfs);
int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *);
int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *);
int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data);
int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb);
int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t);
int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno);
struct nilfs_root *nilfs_find_or_create_root(struct the_nilfs *nilfs,
__u64 cno);
void nilfs_put_root(struct nilfs_root *root);
struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64);
int nilfs_near_disk_full(struct the_nilfs *);
void nilfs_fall_back_super_block(struct the_nilfs *);
void nilfs_swap_super_block(struct the_nilfs *);