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[GFS2] Use mutices rather than semaphores 

As well as a number of minor bug fixes, this patch changes GFS
to use mutices rather than semaphores. This results in better
information in case there are any locking problems.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2006-02-21 12:51:39 +00:00
parent 5c4e9e0366
commit f55ab26a8f
17 changed files with 118 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/gfs2/glock.c
View File

@ -149,7 +149,7 @@ int gfs2_glock_put(struct gfs2_glock *gl)
struct gfs2_gl_hash_bucket *bucket = gl->gl_bucket;
int rv = 0;
down(&sdp->sd_invalidate_inodes_mutex);
mutex_lock(&sdp->sd_invalidate_inodes_mutex);
write_lock(&bucket->hb_lock);
if (kref_put(&gl->gl_ref, kill_glock)) {
@ -161,7 +161,7 @@ int gfs2_glock_put(struct gfs2_glock *gl)
}
write_unlock(&bucket->hb_lock);
out:
up(&sdp->sd_invalidate_inodes_mutex);
mutex_unlock(&sdp->sd_invalidate_inodes_mutex);
return rv;
}
@ -2312,9 +2312,9 @@ void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait)
invalidate_inodes_mutex prevents glock_put()'s during
an invalidate_inodes() */
down(&sdp->sd_invalidate_inodes_mutex);
mutex_lock(&sdp->sd_invalidate_inodes_mutex);
invalidate_inodes(sdp->sd_vfs);
up(&sdp->sd_invalidate_inodes_mutex);
mutex_unlock(&sdp->sd_invalidate_inodes_mutex);
yield();
}
}

22
fs/gfs2/incore.h
View File

@ -88,7 +88,7 @@ struct gfs2_rgrpd {
uint64_t rd_rg_vn;
struct gfs2_bitmap *rd_bits;
unsigned int rd_bh_count;
struct semaphore rd_mutex;
struct mutex rd_mutex;
uint32_t rd_free_clone;
struct gfs2_log_element rd_le;
uint32_t rd_last_alloc_data;
@ -277,7 +277,7 @@ enum {
struct gfs2_file {
unsigned long f_flags; /* GFF_... */
struct semaphore f_fl_mutex;
struct mutex f_fl_mutex;
struct gfs2_holder f_fl_gh;
struct gfs2_inode *f_inode;
@ -510,7 +510,7 @@ struct gfs2_sbd {
struct gfs2_holder sd_live_gh;
struct gfs2_glock *sd_rename_gl;
struct gfs2_glock *sd_trans_gl;
struct semaphore sd_invalidate_inodes_mutex;
struct mutex sd_invalidate_inodes_mutex;
/* Inode Stuff */
@ -528,12 +528,12 @@ struct gfs2_sbd {
/* Inum stuff */
struct semaphore sd_inum_mutex;
struct mutex sd_inum_mutex;
/* StatFS stuff */
spinlock_t sd_statfs_spin;
struct semaphore sd_statfs_mutex;
struct mutex sd_statfs_mutex;
struct gfs2_statfs_change sd_statfs_master;
struct gfs2_statfs_change sd_statfs_local;
unsigned long sd_statfs_sync_time;
@ -542,7 +542,7 @@ struct gfs2_sbd {
uint64_t sd_rindex_vn;
spinlock_t sd_rindex_spin;
struct semaphore sd_rindex_mutex;
struct mutex sd_rindex_mutex;
struct list_head sd_rindex_list;
struct list_head sd_rindex_mru_list;
struct list_head sd_rindex_recent_list;
@ -553,7 +553,7 @@ struct gfs2_sbd {
struct list_head sd_jindex_list;
spinlock_t sd_jindex_spin;
struct semaphore sd_jindex_mutex;
struct mutex sd_jindex_mutex;
unsigned int sd_journals;
unsigned long sd_jindex_refresh_time;
@ -581,7 +581,7 @@ struct gfs2_sbd {
struct list_head sd_unlinked_list;
atomic_t sd_unlinked_count;
spinlock_t sd_unlinked_spin;
struct semaphore sd_unlinked_mutex;
struct mutex sd_unlinked_mutex;
unsigned int sd_unlinked_slots;
unsigned int sd_unlinked_chunks;
@ -592,7 +592,7 @@ struct gfs2_sbd {
struct list_head sd_quota_list;
atomic_t sd_quota_count;
spinlock_t sd_quota_spin;
struct semaphore sd_quota_mutex;
struct mutex sd_quota_mutex;
unsigned int sd_quota_slots;
unsigned int sd_quota_chunks;
@ -637,7 +637,7 @@ struct gfs2_sbd {
int sd_log_idle;
unsigned long sd_log_flush_time;
struct semaphore sd_log_flush_lock;
struct mutex sd_log_flush_lock;
struct list_head sd_log_flush_list;
unsigned int sd_log_flush_head;
@ -659,7 +659,7 @@ struct gfs2_sbd {
/* For quiescing the filesystem */
struct gfs2_holder sd_freeze_gh;
struct semaphore sd_freeze_lock;
struct mutex sd_freeze_lock;
unsigned int sd_freeze_count;
/* Counters */

12
fs/gfs2/inode.c
View File

@ -782,11 +782,11 @@ static int pick_formal_ino_1(struct gfs2_sbd *sdp, uint64_t *formal_ino)
error = gfs2_trans_begin(sdp, RES_DINODE, 0);
if (error)
return error;
down(&sdp->sd_inum_mutex);
mutex_lock(&sdp->sd_inum_mutex);
error = gfs2_meta_inode_buffer(ip, &bh);
if (error) {
up(&sdp->sd_inum_mutex);
mutex_unlock(&sdp->sd_inum_mutex);
gfs2_trans_end(sdp);
return error;
}
@ -800,14 +800,14 @@ static int pick_formal_ino_1(struct gfs2_sbd *sdp, uint64_t *formal_ino)
gfs2_inum_range_out(&ir,
bh->b_data + sizeof(struct gfs2_dinode));
brelse(bh);
up(&sdp->sd_inum_mutex);
mutex_unlock(&sdp->sd_inum_mutex);
gfs2_trans_end(sdp);
return 0;
}
brelse(bh);
up(&sdp->sd_inum_mutex);
mutex_unlock(&sdp->sd_inum_mutex);
gfs2_trans_end(sdp);
return 1;
@ -829,7 +829,7 @@ static int pick_formal_ino_2(struct gfs2_sbd *sdp, uint64_t *formal_ino)
error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0);
if (error)
goto out;
down(&sdp->sd_inum_mutex);
mutex_lock(&sdp->sd_inum_mutex);
error = gfs2_meta_inode_buffer(ip, &bh);
if (error)
@ -869,7 +869,7 @@ static int pick_formal_ino_2(struct gfs2_sbd *sdp, uint64_t *formal_ino)
brelse(bh);
out_end_trans:
up(&sdp->sd_inum_mutex);
mutex_unlock(&sdp->sd_inum_mutex);
gfs2_trans_end(sdp);
out:

54
fs/gfs2/log.c
View File

@ -23,29 +23,16 @@
#define PULL 1
static inline int is_done(struct gfs2_sbd *sdp, atomic_t *a)
{
int done;
gfs2_log_lock(sdp);
done = atomic_read(a) ? 0 : 1;
gfs2_log_unlock(sdp);
return done;
}
static void do_lock_wait(struct gfs2_sbd *sdp, wait_queue_head_t *wq,
atomic_t *a)
{
gfs2_log_unlock(sdp);
wait_event(*wq, is_done(sdp, a));
gfs2_log_lock(sdp);
wait_event(*wq, atomic_read(a) ? 0 : 1);
}
static void lock_for_trans(struct gfs2_sbd *sdp)
{
gfs2_log_lock(sdp);
do_lock_wait(sdp, &sdp->sd_log_trans_wq, &sdp->sd_log_flush_count);
atomic_inc(&sdp->sd_log_trans_count);
gfs2_log_unlock(sdp);
}
static void unlock_from_trans(struct gfs2_sbd *sdp)
@ -55,15 +42,13 @@ static void unlock_from_trans(struct gfs2_sbd *sdp)
wake_up(&sdp->sd_log_flush_wq);
}
void gfs2_lock_for_flush(struct gfs2_sbd *sdp)
static void gfs2_lock_for_flush(struct gfs2_sbd *sdp)
{
gfs2_log_lock(sdp);
atomic_inc(&sdp->sd_log_flush_count);
do_lock_wait(sdp, &sdp->sd_log_flush_wq, &sdp->sd_log_trans_count);
gfs2_log_unlock(sdp);
}
void gfs2_unlock_from_flush(struct gfs2_sbd *sdp)
static void gfs2_unlock_from_flush(struct gfs2_sbd *sdp)
{
gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_flush_count));
if (atomic_dec_and_test(&sdp->sd_log_flush_count))
@ -209,7 +194,6 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
for (;;) {
gfs2_log_lock(sdp);
if (list_empty(&list)) {
list_add_tail(&list, &sdp->sd_log_blks_list);
while (sdp->sd_log_blks_list.next != &list) {
@ -225,7 +209,6 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
set_current_state(TASK_RUNNING);
}
}
/* Never give away the last block so we can
always pull the tail if we need to. */
if (sdp->sd_log_blks_free > blks) {
@ -237,14 +220,12 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
}
gfs2_log_unlock(sdp);
gfs2_ail1_empty(sdp, 0);
gfs2_log_flush(sdp);
if (try++)
gfs2_ail1_start(sdp, 0);
}
lock_for_trans(sdp);
return 0;
@ -512,22 +493,26 @@ void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
INIT_LIST_HEAD(&ai->ai_ail1_list);
INIT_LIST_HEAD(&ai->ai_ail2_list);
gfs2_lock_for_flush(sdp);
down(&sdp->sd_log_flush_lock);
if (gl) {
gfs2_log_lock(sdp);
if (list_empty(&gl->gl_le.le_list)) {
gfs2_log_unlock(sdp);
gfs2_unlock_from_flush(sdp);
kfree(ai);
return;
}
gfs2_log_unlock(sdp);
}
mutex_lock(&sdp->sd_log_flush_lock);
gfs2_assert_withdraw(sdp,
sdp->sd_log_num_buf == sdp->sd_log_commited_buf);
gfs2_assert_withdraw(sdp,
sdp->sd_log_num_revoke == sdp->sd_log_commited_revoke);
if (gl && list_empty(&gl->gl_le.le_list)) {
up(&sdp->sd_log_flush_lock);
gfs2_unlock_from_flush(sdp);
kfree(ai);
return;
}
sdp->sd_log_flush_head = sdp->sd_log_head;
sdp->sd_log_flush_wrapped = 0;
ai->ai_first = sdp->sd_log_flush_head;
@ -538,7 +523,6 @@ void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle)
log_write_header(sdp, 0, PULL);
lops_after_commit(sdp, ai);
sdp->sd_log_head = sdp->sd_log_flush_head;
if (sdp->sd_log_flush_wrapped)
sdp->sd_log_wraps++;
@ -554,7 +538,7 @@ void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
}
gfs2_log_unlock(sdp);
up(&sdp->sd_log_flush_lock);
mutex_unlock(&sdp->sd_log_flush_lock);
sdp->sd_vfs->s_dirt = 0;
gfs2_unlock_from_flush(sdp);
@ -627,7 +611,7 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
void gfs2_log_shutdown(struct gfs2_sbd *sdp)
{
down(&sdp->sd_log_flush_lock);
mutex_lock(&sdp->sd_log_flush_lock);
gfs2_assert_withdraw(sdp, !atomic_read(&sdp->sd_log_trans_count));
gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved);
@ -654,6 +638,6 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp)
sdp->sd_log_wraps++;
sdp->sd_log_tail = sdp->sd_log_head;
up(&sdp->sd_log_flush_lock);
mutex_unlock(&sdp->sd_log_flush_lock);
}

3
fs/gfs2/log.h
View File

@ -42,9 +42,6 @@ static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
sdp->sd_log_head = sdp->sd_log_tail = value;
}
void gfs2_lock_for_flush(struct gfs2_sbd *sdp);
void gfs2_unlock_from_flush(struct gfs2_sbd *sdp);
unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
unsigned int ssize);

36
fs/gfs2/lops.c
View File

@ -502,7 +502,8 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
unsigned int total_dbuf = sdp->sd_log_num_databuf;
unsigned int total_jdata = sdp->sd_log_num_jdata;
unsigned int num, n;
__be64 *ptr;
__be64 *ptr = NULL;
unsigned i;
offset += (2*sizeof(__be64) - 1);
offset &= ~(2*sizeof(__be64) - 1);
@ -513,14 +514,17 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
* Start writing ordered buffers, write journaled buffers
* into the log along with a header
*/
gfs2_log_lock(sdp);
/* printk(KERN_INFO "locked in lops databuf_before_commit\n"); */
bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, bd_le.le_list);
while(total_dbuf) {
num = total_jdata;
if (num > limit)
num = limit;
/* printk(KERN_INFO "total_dbuf=%u num=%u\n", total_dbuf, num); */
n = 0;
i = 0;
list_for_each_entry_safe_continue(bd1, bdt, &sdp->sd_log_le_databuf, bd_le.le_list) {
gfs2_log_lock(sdp);
/* An ordered write buffer */
if (bd1->bd_bh && !buffer_pinned(bd1->bd_bh)) {
list_move(&bd1->bd_le.le_list, &started);
@ -531,20 +535,28 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
total_dbuf--;
if (bd1->bd_bh) {
get_bh(bd1->bd_bh);
gfs2_log_unlock(sdp);
if (buffer_dirty(bd1->bd_bh)) {
gfs2_log_unlock(sdp);
wait_on_buffer(bd1->bd_bh);
ll_rw_block(WRITE, 1, &bd1->bd_bh);
gfs2_log_lock(sdp);
}
brelse(bd1->bd_bh);
/* printk(KERN_INFO "db write %p\n", bd1); */
if (++i > 100000) {
printk(KERN_INFO "looping bd1=%p bdt=%p eol=%p started=%p\n", bd1, bdt, &sdp->sd_log_le_databuf, &started);
dump_stack();
BUG();
}
continue;
}
gfs2_log_unlock(sdp);
/* printk(KERN_INFO "db skip\n"); */
continue;
} else if (bd1->bd_bh) { /* A journaled buffer */
int magic;
gfs2_log_unlock(sdp);
/* printk(KERN_INFO "journaled buffer\n"); */
printk(KERN_INFO "journaled buffer %p\n", bd1->bd_bh);
printk(KERN_INFO "%lu %u %p %p\n", bd1->bd_bh->b_blocknr, bd1->bd_bh->b_size, bd1->bd_bh->b_data, bd1->bd_bh->b_page);
if (!bh) {
bh = gfs2_log_get_buf(sdp);
ld = (struct gfs2_log_descriptor *)bh->b_data;
@ -558,16 +570,21 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
ld->ld_data2 = cpu_to_be32(0);
memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
}
/* printk(KERN_INFO "check_magic\n"); */
magic = gfs2_check_magic(bd1->bd_bh);
/* printk(KERN_INFO "write data\n"); */
*ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
*ptr++ = cpu_to_be64((__u64)magic);
/* printk(KERN_INFO "mark escaped or not\n"); */
clear_buffer_escaped(bd1->bd_bh);
if (unlikely(magic != 0))
set_buffer_escaped(bd1->bd_bh);
gfs2_log_lock(sdp);
if (n++ > num)
break;
}
}
gfs2_log_unlock(sdp);
if (bh) {
set_buffer_dirty(bh);
ll_rw_block(WRITE, 1, &bh);
@ -575,10 +592,12 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
}
n = 0;
/* printk(KERN_INFO "totals2: jdata=%u dbuf=%u\n", total_jdata, total_dbuf); */
gfs2_log_lock(sdp);
list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, bd_le.le_list) {
if (!bd2->bd_bh)
continue;
/* copy buffer if it needs escaping */
gfs2_log_unlock(sdp);
if (unlikely(buffer_escaped(bd2->bd_bh))) {
void *kaddr;
struct page *page = bd2->bd_bh->b_page;
@ -592,6 +611,7 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
}
set_buffer_dirty(bh);
ll_rw_block(WRITE, 1, &bh);
gfs2_log_lock(sdp);
if (++n >= num)
break;
}
@ -599,6 +619,8 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
total_dbuf -= num;
total_jdata -= num;
}
gfs2_log_unlock(sdp);
/* printk(KERN_INFO "wait on ordered data buffers\n"); */
/* Wait on all ordered buffers */
while (!list_empty(&started)) {
@ -701,12 +723,10 @@ static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
while (!list_empty(head)) {
bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
list_del_init(&bd->bd_le.le_list);
list_del(&bd->bd_le.le_list);
sdp->sd_log_num_databuf--;
sdp->sd_log_num_jdata--;
gfs2_unpin(sdp, bd->bd_bh, ai);
brelse(bd->bd_bh);
kfree(bd);
}
gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata);

2
fs/gfs2/meta_io.c
View File

@ -556,7 +556,7 @@ void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh, int meta
return;
}
bd = kmem_cache_alloc(gfs2_bufdata_cachep, GFP_KERNEL | __GFP_NOFAIL),
bd = kmem_cache_alloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
atomic_inc(&gl->gl_sbd->sd_bufdata_count);
memset(bd, 0, sizeof(struct gfs2_bufdata));

1
fs/gfs2/ops_address.c
View File

@ -189,7 +189,6 @@ static int gfs2_writepage(struct page *page, struct writeback_control *wbc)
gfs2_page_add_databufs(ip, page, 0, sdp->sd_vfs->s_blocksize-1);
done_trans = 1;
}
error = block_write_full_page(page, get_block_noalloc, wbc);
if (done_trans)
gfs2_trans_end(sdp);

10
fs/gfs2/ops_file.c
View File

@ -688,7 +688,7 @@ static int gfs2_open(struct inode *inode, struct file *file)
if (!fp)
return -ENOMEM;
init_MUTEX(&fp->f_fl_mutex);
mutex_init(&fp->f_fl_mutex);
fp->f_inode = ip;
fp->f_vfile = file;
@ -858,7 +858,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED;
flags = ((IS_SETLKW(cmd)) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE;
down(&fp->f_fl_mutex);
mutex_lock(&fp->f_fl_mutex);
gl = fl_gh->gh_gl;
if (gl) {
@ -890,7 +890,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
}
out:
up(&fp->f_fl_mutex);
mutex_unlock(&fp->f_fl_mutex);
return error;
}
@ -900,11 +900,11 @@ static void do_unflock(struct file *file, struct file_lock *fl)
struct gfs2_file *fp = get_v2fp(file);
struct gfs2_holder *fl_gh = &fp->f_fl_gh;
down(&fp->f_fl_mutex);
mutex_lock(&fp->f_fl_mutex);
flock_lock_file_wait(file, fl);
if (fl_gh->gh_gl)
gfs2_glock_dq_uninit(fl_gh);
up(&fp->f_fl_mutex);
mutex_unlock(&fp->f_fl_mutex);
}
/**

18
fs/gfs2/ops_fstype.c
View File

@ -59,29 +59,29 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_reclaim_list);
spin_lock_init(&sdp->sd_reclaim_lock);
init_waitqueue_head(&sdp->sd_reclaim_wq);
init_MUTEX(&sdp->sd_invalidate_inodes_mutex);
mutex_init(&sdp->sd_invalidate_inodes_mutex);
init_MUTEX(&sdp->sd_inum_mutex);
mutex_init(&sdp->sd_inum_mutex);
spin_lock_init(&sdp->sd_statfs_spin);
init_MUTEX(&sdp->sd_statfs_mutex);
mutex_init(&sdp->sd_statfs_mutex);
spin_lock_init(&sdp->sd_rindex_spin);
init_MUTEX(&sdp->sd_rindex_mutex);
mutex_init(&sdp->sd_rindex_mutex);
INIT_LIST_HEAD(&sdp->sd_rindex_list);
INIT_LIST_HEAD(&sdp->sd_rindex_mru_list);
INIT_LIST_HEAD(&sdp->sd_rindex_recent_list);
INIT_LIST_HEAD(&sdp->sd_jindex_list);
spin_lock_init(&sdp->sd_jindex_spin);
init_MUTEX(&sdp->sd_jindex_mutex);
mutex_init(&sdp->sd_jindex_mutex);
INIT_LIST_HEAD(&sdp->sd_unlinked_list);
spin_lock_init(&sdp->sd_unlinked_spin);
init_MUTEX(&sdp->sd_unlinked_mutex);
mutex_init(&sdp->sd_unlinked_mutex);
INIT_LIST_HEAD(&sdp->sd_quota_list);
spin_lock_init(&sdp->sd_quota_spin);
init_MUTEX(&sdp->sd_quota_mutex);
mutex_init(&sdp->sd_quota_mutex);
spin_lock_init(&sdp->sd_log_lock);
init_waitqueue_head(&sdp->sd_log_trans_wq);
@ -99,12 +99,12 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
INIT_LIST_HEAD(&sdp->sd_ail1_list);
INIT_LIST_HEAD(&sdp->sd_ail2_list);
init_MUTEX(&sdp->sd_log_flush_lock);
mutex_init(&sdp->sd_log_flush_lock);
INIT_LIST_HEAD(&sdp->sd_log_flush_list);
INIT_LIST_HEAD(&sdp->sd_revoke_list);
init_MUTEX(&sdp->sd_freeze_lock);
mutex_init(&sdp->sd_freeze_lock);
return sdp;
}

4
fs/gfs2/ops_super.c
View File

@ -74,10 +74,10 @@ static void gfs2_put_super(struct super_block *sb)
/* Unfreeze the filesystem, if we need to */
down(&sdp->sd_freeze_lock);
mutex_lock(&sdp->sd_freeze_lock);
if (sdp->sd_freeze_count)
gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
up(&sdp->sd_freeze_lock);
mutex_unlock(&sdp->sd_freeze_lock);
kthread_stop(sdp->sd_inoded_process);
kthread_stop(sdp->sd_quotad_process);

16
fs/gfs2/quota.c
View File

@ -251,10 +251,10 @@ static int bh_get(struct gfs2_quota_data *qd)
struct buffer_head *bh;
int error;
down(&sdp->sd_quota_mutex);
mutex_lock(&sdp->sd_quota_mutex);
if (qd->qd_bh_count++) {
up(&sdp->sd_quota_mutex);
mutex_unlock(&sdp->sd_quota_mutex);
return 0;
}
@ -276,7 +276,7 @@ static int bh_get(struct gfs2_quota_data *qd)
(bh->b_data + sizeof(struct gfs2_meta_header) +
offset * sizeof(struct gfs2_quota_change));
up(&sdp->sd_quota_mutex);
mutex_lock(&sdp->sd_quota_mutex);
return 0;
@ -285,7 +285,7 @@ static int bh_get(struct gfs2_quota_data *qd)
fail:
qd->qd_bh_count--;
up(&sdp->sd_quota_mutex);
mutex_unlock(&sdp->sd_quota_mutex);
return error;
}
@ -293,14 +293,14 @@ static void bh_put(struct gfs2_quota_data *qd)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
down(&sdp->sd_quota_mutex);
mutex_lock(&sdp->sd_quota_mutex);
gfs2_assert(sdp, qd->qd_bh_count);
if (!--qd->qd_bh_count) {
brelse(qd->qd_bh);
qd->qd_bh = NULL;
qd->qd_bh_qc = NULL;
}
up(&sdp->sd_quota_mutex);
mutex_unlock(&sdp->sd_quota_mutex);
}
static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp)
@ -529,7 +529,7 @@ static void do_qc(struct gfs2_quota_data *qd, int64_t change)
struct gfs2_quota_change *qc = qd->qd_bh_qc;
int64_t x;
down(&sdp->sd_quota_mutex);
mutex_lock(&sdp->sd_quota_mutex);
gfs2_trans_add_bh(ip->i_gl, qd->qd_bh, 1);
if (!test_bit(QDF_CHANGE, &qd->qd_flags)) {
@ -560,7 +560,7 @@ static void do_qc(struct gfs2_quota_data *qd, int64_t change)
slot_hold(qd);
}
up(&sdp->sd_quota_mutex);
mutex_unlock(&sdp->sd_quota_mutex);
}
/**

18
fs/gfs2/rgrp.c
View File

@ -182,9 +182,9 @@ static void clear_rgrpdi(struct gfs2_sbd *sdp)
void gfs2_clear_rgrpd(struct gfs2_sbd *sdp)
{
down(&sdp->sd_rindex_mutex);
mutex_lock(&sdp->sd_rindex_mutex);
clear_rgrpdi(sdp);
up(&sdp->sd_rindex_mutex);
mutex_unlock(&sdp->sd_rindex_mutex);
}
/**
@ -301,7 +301,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
if (!rgd)
goto fail;
init_MUTEX(&rgd->rd_mutex);
mutex_init(&rgd->rd_mutex);
lops_init_le(&rgd->rd_le, &gfs2_rg_lops);
rgd->rd_sbd = sdp;
@ -363,13 +363,13 @@ int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
/* Read new copy from disk if we don't have the latest */
if (sdp->sd_rindex_vn != gl->gl_vn) {
down(&sdp->sd_rindex_mutex);
mutex_lock(&sdp->sd_rindex_mutex);
if (sdp->sd_rindex_vn != gl->gl_vn) {
error = gfs2_ri_update(ip);
if (error)
gfs2_glock_dq_uninit(ri_gh);
}
up(&sdp->sd_rindex_mutex);
mutex_unlock(&sdp->sd_rindex_mutex);
}
return error;
@ -394,13 +394,13 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
unsigned int x, y;
int error;
down(&rgd->rd_mutex);
mutex_lock(&rgd->rd_mutex);
spin_lock(&sdp->sd_rindex_spin);
if (rgd->rd_bh_count) {
rgd->rd_bh_count++;
spin_unlock(&sdp->sd_rindex_spin);
up(&rgd->rd_mutex);
mutex_unlock(&rgd->rd_mutex);
return 0;
}
spin_unlock(&sdp->sd_rindex_spin);
@ -436,7 +436,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
rgd->rd_bh_count++;
spin_unlock(&sdp->sd_rindex_spin);
up(&rgd->rd_mutex);
mutex_unlock(&rgd->rd_mutex);
return 0;
@ -447,7 +447,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
bi->bi_bh = NULL;
gfs2_assert_warn(sdp, !bi->bi_clone);
}
up(&rgd->rd_mutex);
mutex_unlock(&rgd->rd_mutex);
return error;
}

20
fs/gfs2/super.c
View File

@ -279,7 +279,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
name.name = buf;
down(&sdp->sd_jindex_mutex);
mutex_lock(&sdp->sd_jindex_mutex);
for (;;) {
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED,
@ -317,7 +317,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
spin_unlock(&sdp->sd_jindex_spin);
}
up(&sdp->sd_jindex_mutex);
mutex_unlock(&sdp->sd_jindex_mutex);
return error;
}
@ -608,9 +608,9 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, int64_t total, int64_t free,
if (error)
return;
down(&sdp->sd_statfs_mutex);
mutex_lock(&sdp->sd_statfs_mutex);
gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1);
up(&sdp->sd_statfs_mutex);
mutex_unlock(&sdp->sd_statfs_mutex);
spin_lock(&sdp->sd_statfs_spin);
l_sc->sc_total += total;
@ -659,9 +659,9 @@ int gfs2_statfs_sync(struct gfs2_sbd *sdp)
if (error)
goto out_bh2;
down(&sdp->sd_statfs_mutex);
mutex_lock(&sdp->sd_statfs_mutex);
gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1);
up(&sdp->sd_statfs_mutex);
mutex_unlock(&sdp->sd_statfs_mutex);
spin_lock(&sdp->sd_statfs_spin);
m_sc->sc_total += l_sc->sc_total;
@ -910,7 +910,7 @@ int gfs2_freeze_fs(struct gfs2_sbd *sdp)
{
int error = 0;
down(&sdp->sd_freeze_lock);
mutex_lock(&sdp->sd_freeze_lock);
if (!sdp->sd_freeze_count++) {
error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh);
@ -918,7 +918,7 @@ int gfs2_freeze_fs(struct gfs2_sbd *sdp)
sdp->sd_freeze_count--;
}
up(&sdp->sd_freeze_lock);
mutex_unlock(&sdp->sd_freeze_lock);
return error;
}
@ -935,11 +935,11 @@ int gfs2_freeze_fs(struct gfs2_sbd *sdp)
void gfs2_unfreeze_fs(struct gfs2_sbd *sdp)
{
down(&sdp->sd_freeze_lock);
mutex_lock(&sdp->sd_freeze_lock);
if (sdp->sd_freeze_count && !--sdp->sd_freeze_count)
gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
up(&sdp->sd_freeze_lock);
mutex_unlock(&sdp->sd_freeze_lock);
}

4
fs/gfs2/sys.c
View File

@ -41,9 +41,9 @@ static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
{
unsigned int count;
down(&sdp->sd_freeze_lock);
mutex_lock(&sdp->sd_freeze_lock);
count = sdp->sd_freeze_count;
up(&sdp->sd_freeze_lock);
mutex_unlock(&sdp->sd_freeze_lock);
return sprintf(buf, "%u\n", count);
}

4
fs/gfs2/trans.c
View File

@ -33,7 +33,7 @@ int gfs2_trans_begin_i(struct gfs2_sbd *sdp, unsigned int blocks,
return -EINVAL;
}
tr = kzalloc(sizeof(struct gfs2_trans), GFP_KERNEL);
tr = kzalloc(sizeof(struct gfs2_trans), GFP_NOFS);
if (!tr)
return -ENOMEM;
@ -51,7 +51,7 @@ int gfs2_trans_begin_i(struct gfs2_sbd *sdp, unsigned int blocks,
error = -ENOMEM;
tr->tr_t_gh = gfs2_holder_get(sdp->sd_trans_gl, LM_ST_SHARED,
GL_NEVER_RECURSE, GFP_KERNEL);
GL_NEVER_RECURSE, GFP_NOFS);
if (!tr->tr_t_gh)
goto fail;

4
fs/gfs2/unlinked.c
View File

@ -46,12 +46,12 @@ static int munge_ondisk(struct gfs2_sbd *sdp, unsigned int slot,
goto out;
}
down(&sdp->sd_unlinked_mutex);
mutex_lock(&sdp->sd_unlinked_mutex);
gfs2_trans_add_bh(ip->i_gl, bh, 1);
gfs2_unlinked_tag_out(ut, bh->b_data +
sizeof(struct gfs2_meta_header) +
offset * sizeof(struct gfs2_unlinked_tag));
up(&sdp->sd_unlinked_mutex);
mutex_unlock(&sdp->sd_unlinked_mutex);
out:
brelse(bh);