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Commit cf5434e8 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2/trivial: Wrap ocfs2_sysfile_cluster_lock_key within define.
  ocfs2: Add lockdep annotations
  vfs: Set special lockdep map for dirs only if not set by fs
  ocfs2: Disable orphan scanning for local and hard-ro mounts
  ocfs2: Do not initialize lvb in ocfs2_orphan_scan_lock_res_init()
  ocfs2: Stop orphan scan as early as possible during umount
  ocfs2: Fix ocfs2_osb_dump()
  ocfs2: Pin journal head before accessing jh->b_committed_data
  ocfs2: Update atime in splice read if necessary.
  ocfs2: Provide the ocfs2_dlm_lvb_valid() stack API.
parents 7b58fc21 d246ab30

fs/inode.c

+11 −6
Original line number Diff line number Diff line
@@ -665,12 +665,17 @@ void unlock_new_inode(struct inode *inode) 
	if (inode->i_mode & S_IFDIR) {

		struct file_system_type *type = inode->i_sb->s_type;



		/* Set new key only if filesystem hasn't already changed it */

		if (!lockdep_match_class(&inode->i_mutex,

		    &type->i_mutex_key)) {

			/*

			 * ensure nobody is actually holding i_mutex

			 */

			mutex_destroy(&inode->i_mutex);

			mutex_init(&inode->i_mutex);

		lockdep_set_class(&inode->i_mutex, &type->i_mutex_dir_key);

			lockdep_set_class(&inode->i_mutex,

					  &type->i_mutex_dir_key);

		}

	}

#endif

	/*

fs/ocfs2/dlmglue.c

+90 −33
Original line number Diff line number Diff line
@@ -92,6 +92,9 @@ struct ocfs2_unblock_ctl { 
	enum ocfs2_unblock_action unblock_action;

};



/* Lockdep class keys */

struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];



static int ocfs2_check_meta_downconvert(struct ocfs2_lock_res *lockres,

					int new_level);

static void ocfs2_set_meta_lvb(struct ocfs2_lock_res *lockres);
@@ -317,9 +320,16 @@ static int ocfs2_lock_create(struct ocfs2_super *osb, 
			     u32 dlm_flags);

static inline int ocfs2_may_continue_on_blocked_lock(struct ocfs2_lock_res *lockres,

						     int wanted);

static void ocfs2_cluster_unlock(struct ocfs2_super *osb,

static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,

				   struct ocfs2_lock_res *lockres,

				   int level, unsigned long caller_ip);

static inline void ocfs2_cluster_unlock(struct ocfs2_super *osb,

					struct ocfs2_lock_res *lockres,

				 int level);

					int level)

{

	__ocfs2_cluster_unlock(osb, lockres, level, _RET_IP_);

}



static inline void ocfs2_generic_handle_downconvert_action(struct ocfs2_lock_res *lockres);

static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lockres);

static inline void ocfs2_generic_handle_attach_action(struct ocfs2_lock_res *lockres);
@@ -489,6 +499,13 @@ static void ocfs2_lock_res_init_common(struct ocfs2_super *osb, 
	ocfs2_add_lockres_tracking(res, osb->osb_dlm_debug);



	ocfs2_init_lock_stats(res);

#ifdef CONFIG_DEBUG_LOCK_ALLOC

	if (type != OCFS2_LOCK_TYPE_OPEN)

		lockdep_init_map(&res->l_lockdep_map, ocfs2_lock_type_strings[type],

				 &lockdep_keys[type], 0);

	else

		res->l_lockdep_map.key = NULL;

#endif

}



void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res)
@@ -644,14 +661,10 @@ static void ocfs2_nfs_sync_lock_res_init(struct ocfs2_lock_res *res, 
static void ocfs2_orphan_scan_lock_res_init(struct ocfs2_lock_res *res,

					    struct ocfs2_super *osb)

{

	struct ocfs2_orphan_scan_lvb *lvb;



	ocfs2_lock_res_init_once(res);

	ocfs2_build_lock_name(OCFS2_LOCK_TYPE_ORPHAN_SCAN, 0, 0, res->l_name);

	ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_ORPHAN_SCAN,

				   &ocfs2_orphan_scan_lops, osb);

	lvb = ocfs2_dlm_lvb(&res->l_lksb);

	lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;

}



void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
@@ -1256,11 +1269,13 @@ static int ocfs2_wait_for_mask_interruptible(struct ocfs2_mask_waiter *mw, 
	return ret;

}



static int ocfs2_cluster_lock(struct ocfs2_super *osb,

static int __ocfs2_cluster_lock(struct ocfs2_super *osb,

				struct ocfs2_lock_res *lockres,

				int level,

				u32 lkm_flags,

			      int arg_flags)

				int arg_flags,

				int l_subclass,

				unsigned long caller_ip)

{

	struct ocfs2_mask_waiter mw;

	int wait, catch_signals = !(osb->s_mount_opt & OCFS2_MOUNT_NOINTR);
@@ -1403,13 +1418,37 @@ static int ocfs2_cluster_lock(struct ocfs2_super *osb, 
	}

	ocfs2_update_lock_stats(lockres, level, &mw, ret);



#ifdef CONFIG_DEBUG_LOCK_ALLOC

	if (!ret && lockres->l_lockdep_map.key != NULL) {

		if (level == DLM_LOCK_PR)

			rwsem_acquire_read(&lockres->l_lockdep_map, l_subclass,

				!!(arg_flags & OCFS2_META_LOCK_NOQUEUE),

				caller_ip);

		else

			rwsem_acquire(&lockres->l_lockdep_map, l_subclass,

				!!(arg_flags & OCFS2_META_LOCK_NOQUEUE),

				caller_ip);

	}

#endif

	mlog_exit(ret);

	return ret;

}



static void ocfs2_cluster_unlock(struct ocfs2_super *osb,

static inline int ocfs2_cluster_lock(struct ocfs2_super *osb,

				     struct ocfs2_lock_res *lockres,

				 int level)

				     int level,

				     u32 lkm_flags,

				     int arg_flags)

{

	return __ocfs2_cluster_lock(osb, lockres, level, lkm_flags, arg_flags,

				    0, _RET_IP_);

}





static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,

				   struct ocfs2_lock_res *lockres,

				   int level,

				   unsigned long caller_ip)

{

	unsigned long flags;
@@ -1418,6 +1457,10 @@ static void ocfs2_cluster_unlock(struct ocfs2_super *osb, 
	ocfs2_dec_holders(lockres, level);

	ocfs2_downconvert_on_unlock(osb, lockres);

	spin_unlock_irqrestore(&lockres->l_lock, flags);

#ifdef CONFIG_DEBUG_LOCK_ALLOC

	if (lockres->l_lockdep_map.key != NULL)

		rwsem_release(&lockres->l_lockdep_map, 1, caller_ip);

#endif

	mlog_exit_void();

}
@@ -1989,7 +2032,8 @@ static inline int ocfs2_meta_lvb_is_trustable(struct inode *inode, 
{

	struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);



	if (lvb->lvb_version == OCFS2_LVB_VERSION

	if (ocfs2_dlm_lvb_valid(&lockres->l_lksb)

	    && lvb->lvb_version == OCFS2_LVB_VERSION

	    && be32_to_cpu(lvb->lvb_igeneration) == inode->i_generation)

		return 1;

	return 0;
@@ -2162,10 +2206,11 @@ static int ocfs2_assign_bh(struct inode *inode, 
 * returns < 0 error if the callback will never be called, otherwise

 * the result of the lock will be communicated via the callback.

 */

int ocfs2_inode_lock_full(struct inode *inode,

int ocfs2_inode_lock_full_nested(struct inode *inode,

				 struct buffer_head **ret_bh,

				 int ex,

			 int arg_flags)

				 int arg_flags,

				 int subclass)

{

	int status, level, acquired;

	u32 dlm_flags;
@@ -2203,7 +2248,8 @@ int ocfs2_inode_lock_full(struct inode *inode, 
	if (arg_flags & OCFS2_META_LOCK_NOQUEUE)

		dlm_flags |= DLM_LKF_NOQUEUE;



	status = ocfs2_cluster_lock(osb, lockres, level, dlm_flags, arg_flags);

	status = __ocfs2_cluster_lock(osb, lockres, level, dlm_flags,

				      arg_flags, subclass, _RET_IP_);

	if (status < 0) {

		if (status != -EAGAIN && status != -EIOCBRETRY)

			mlog_errno(status);
@@ -2369,35 +2415,45 @@ void ocfs2_inode_unlock(struct inode *inode, 
	mlog_exit_void();

}



int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex)

int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)

{

	struct ocfs2_lock_res *lockres;

	struct ocfs2_orphan_scan_lvb *lvb;

	int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;

	int status = 0;



	if (ocfs2_is_hard_readonly(osb))

		return -EROFS;



	if (ocfs2_mount_local(osb))

		return 0;



	lockres = &osb->osb_orphan_scan.os_lockres;

	status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);

	status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);

	if (status < 0)

		return status;



	lvb = ocfs2_dlm_lvb(&lockres->l_lksb);

	if (lvb->lvb_version == OCFS2_ORPHAN_LVB_VERSION)

	if (ocfs2_dlm_lvb_valid(&lockres->l_lksb) &&

	    lvb->lvb_version == OCFS2_ORPHAN_LVB_VERSION)

		*seqno = be32_to_cpu(lvb->lvb_os_seqno);

	else

		*seqno = osb->osb_orphan_scan.os_seqno + 1;



	return status;

}



void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex)

void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno)

{

	struct ocfs2_lock_res *lockres;

	struct ocfs2_orphan_scan_lvb *lvb;

	int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;



	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb)) {

		lockres = &osb->osb_orphan_scan.os_lockres;

		lvb = ocfs2_dlm_lvb(&lockres->l_lksb);

		lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;

		lvb->lvb_os_seqno = cpu_to_be32(seqno);

	ocfs2_cluster_unlock(osb, lockres, level);

		ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);

	}

}



int ocfs2_super_lock(struct ocfs2_super *osb,
@@ -3627,7 +3683,8 @@ static int ocfs2_refresh_qinfo(struct ocfs2_mem_dqinfo *oinfo) 
	struct ocfs2_global_disk_dqinfo *gdinfo;

	int status = 0;



	if (lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {

	if (ocfs2_dlm_lvb_valid(&lockres->l_lksb) &&

	    lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {

		info->dqi_bgrace = be32_to_cpu(lvb->lvb_bgrace);

		info->dqi_igrace = be32_to_cpu(lvb->lvb_igrace);

		oinfo->dqi_syncms = be32_to_cpu(lvb->lvb_syncms);

fs/ocfs2/dlmglue.h

+19 −5
Original line number Diff line number Diff line
@@ -78,6 +78,14 @@ struct ocfs2_orphan_scan_lvb { 
/* don't block waiting for the downconvert thread, instead return -EAGAIN */

#define OCFS2_LOCK_NONBLOCK		(0x04)



/* Locking subclasses of inode cluster lock */

enum {

	OI_LS_NORMAL = 0,

	OI_LS_PARENT,

	OI_LS_RENAME1,

	OI_LS_RENAME2,

};



int ocfs2_dlm_init(struct ocfs2_super *osb);

void ocfs2_dlm_shutdown(struct ocfs2_super *osb, int hangup_pending);

void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res);
@@ -104,25 +112,31 @@ void ocfs2_open_unlock(struct inode *inode); 
int ocfs2_inode_lock_atime(struct inode *inode,

			  struct vfsmount *vfsmnt,

			  int *level);

int ocfs2_inode_lock_full(struct inode *inode,

int ocfs2_inode_lock_full_nested(struct inode *inode,

			 struct buffer_head **ret_bh,

			 int ex,

			 int arg_flags);

			 int arg_flags,

			 int subclass);

int ocfs2_inode_lock_with_page(struct inode *inode,

			      struct buffer_head **ret_bh,

			      int ex,

			      struct page *page);

/* Variants without special locking class or flags */

#define ocfs2_inode_lock_full(i, r, e, f)\

		ocfs2_inode_lock_full_nested(i, r, e, f, OI_LS_NORMAL)

#define ocfs2_inode_lock_nested(i, b, e, s)\

		ocfs2_inode_lock_full_nested(i, b, e, 0, s)

/* 99% of the time we don't want to supply any additional flags --

 * those are for very specific cases only. */

#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full(i, b, e, 0)

#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full_nested(i, b, e, 0, OI_LS_NORMAL)

void ocfs2_inode_unlock(struct inode *inode,

		       int ex);

int ocfs2_super_lock(struct ocfs2_super *osb,

		     int ex);

void ocfs2_super_unlock(struct ocfs2_super *osb,

			int ex);

int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex);

void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex);

int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno);

void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno);



int ocfs2_rename_lock(struct ocfs2_super *osb);

void ocfs2_rename_unlock(struct ocfs2_super *osb);

fs/ocfs2/file.c

+3 −3
Original line number Diff line number Diff line
@@ -2026,7 +2026,7 @@ static ssize_t ocfs2_file_splice_read(struct file *in, 
				      size_t len,

				      unsigned int flags)

{

	int ret = 0;

	int ret = 0, lock_level = 0;

	struct inode *inode = in->f_path.dentry->d_inode;



	mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe,
@@ -2037,12 +2037,12 @@ static ssize_t ocfs2_file_splice_read(struct file *in, 
	/*

	 * See the comment in ocfs2_file_aio_read()

	 */

	ret = ocfs2_inode_lock(inode, NULL, 0);

	ret = ocfs2_inode_lock_atime(inode, in->f_vfsmnt, &lock_level);

	if (ret < 0) {

		mlog_errno(ret);

		goto bail;

	}

	ocfs2_inode_unlock(inode, 0);

	ocfs2_inode_unlock(inode, lock_level);



	ret = generic_file_splice_read(in, ppos, pipe, len, flags);

fs/ocfs2/inode.c

+11 −0
Original line number Diff line number Diff line
@@ -215,6 +215,8 @@ static int ocfs2_find_actor(struct inode *inode, void *opaque) 
static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)

{

	struct ocfs2_find_inode_args *args = opaque;

	static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,

				     ocfs2_file_ip_alloc_sem_key;



	mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
@@ -223,6 +225,15 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) 
	if (args->fi_sysfile_type != 0)

		lockdep_set_class(&inode->i_mutex,

			&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);

	if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||

	    args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||

	    args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||

	    args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)

		lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,

				  &ocfs2_quota_ip_alloc_sem_key);

	else

		lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,

				  &ocfs2_file_ip_alloc_sem_key);



	mlog_exit(0);

	return 0;