Commit 9c455a8c authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS/pNFS: Clean up pNFS commit operations 



Move the pNFS commit related operations into a separate structure
that can be carried by the pnfs_ds_commit_info.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 0aa647b7

fs/nfs/direct.c

+2 −4
Original line number Diff line number Diff line
@@ -511,10 +511,7 @@ nfs_direct_write_scan_commit_list(struct inode *inode, 
				  struct nfs_commit_info *cinfo)

{

	mutex_lock(&NFS_I(cinfo->inode)->commit_mutex);

#ifdef CONFIG_NFS_V4_1

	if (cinfo->ds != NULL && cinfo->ds->nwritten != 0)

		NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo);

#endif

	pnfs_recover_commit_reqs(list, cinfo);

	nfs_scan_commit_list(&cinfo->mds->list, list, cinfo, 0);

	mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);

}
@@ -917,6 +914,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter) 
	dreq->l_ctx = l_ctx;

	if (!is_sync_kiocb(iocb))

		dreq->iocb = iocb;

	pnfs_init_ds_commit_info_ops(&dreq->ds_cinfo, inode);



	nfs_start_io_direct(inode);

fs/nfs/filelayout/filelayout.c

+12 −8
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ MODULE_AUTHOR("Dean Hildebrand <dhildebz@umich.edu>"); 
MODULE_DESCRIPTION("The NFSv4 file layout driver");



#define FILELAYOUT_POLL_RETRY_MAX     (15*HZ)

static const struct pnfs_commit_ops filelayout_commit_ops;



static loff_t

filelayout_get_dense_offset(struct nfs4_filelayout_segment *flseg,
@@ -1045,6 +1046,7 @@ filelayout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) 
	if (flo == NULL)

		return NULL;

	pnfs_init_ds_commit_info(&flo->commit_info);

	flo->commit_info.ops = &filelayout_commit_ops;

	return &flo->generic_hdr;

}
@@ -1094,6 +1096,16 @@ filelayout_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, 
	spin_unlock(&inode->i_lock);

}



static const struct pnfs_commit_ops filelayout_commit_ops = {

	.setup_ds_info		= filelayout_setup_ds_info,

	.release_ds_info	= filelayout_release_ds_info,

	.mark_request_commit	= filelayout_mark_request_commit,

	.clear_request_commit	= pnfs_generic_clear_request_commit,

	.scan_commit_lists	= pnfs_generic_scan_commit_lists,

	.recover_commit_reqs	= pnfs_generic_recover_commit_reqs,

	.search_commit_reqs	= pnfs_generic_search_commit_reqs,

	.commit_pagelist	= filelayout_commit_pagelist,

};



static struct pnfs_layoutdriver_type filelayout_type = {

	.id			= LAYOUT_NFSV4_1_FILES,
@@ -1108,14 +1120,6 @@ static struct pnfs_layoutdriver_type filelayout_type = { 
	.pg_read_ops		= &filelayout_pg_read_ops,

	.pg_write_ops		= &filelayout_pg_write_ops,

	.get_ds_info		= &filelayout_get_ds_info,

	.setup_ds_info		= filelayout_setup_ds_info,

	.release_ds_info	= filelayout_release_ds_info,

	.mark_request_commit	= filelayout_mark_request_commit,

	.clear_request_commit	= pnfs_generic_clear_request_commit,

	.scan_commit_lists	= pnfs_generic_scan_commit_lists,

	.recover_commit_reqs	= pnfs_generic_recover_commit_reqs,

	.search_commit_reqs	= pnfs_generic_search_commit_reqs,

	.commit_pagelist	= filelayout_commit_pagelist,

	.read_pagelist		= filelayout_read_pagelist,

	.write_pagelist		= filelayout_write_pagelist,

	.alloc_deviceid_node	= filelayout_alloc_deviceid_node,

fs/nfs/flexfilelayout/flexfilelayout.c

+12 −7
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 


static unsigned short io_maxretrans;



static const struct pnfs_commit_ops ff_layout_commit_ops;

static void ff_layout_read_record_layoutstats_done(struct rpc_task *task,

		struct nfs_pgio_header *hdr);

static int ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo,
@@ -52,6 +53,7 @@ ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) 
		INIT_LIST_HEAD(&ffl->error_list);

		INIT_LIST_HEAD(&ffl->mirrors);

		ffl->last_report_time = ktime_get();

		ffl->commit_info.ops = &ff_layout_commit_ops;

		return &ffl->generic_hdr;

	} else

		return NULL;
@@ -2440,6 +2442,16 @@ ff_layout_set_layoutdriver(struct nfs_server *server, 
	return 0;

}



static const struct pnfs_commit_ops ff_layout_commit_ops = {

	.setup_ds_info		= ff_layout_setup_ds_info,

	.release_ds_info	= ff_layout_release_ds_info,

	.mark_request_commit	= pnfs_layout_mark_request_commit,

	.clear_request_commit	= pnfs_generic_clear_request_commit,

	.scan_commit_lists	= pnfs_generic_scan_commit_lists,

	.recover_commit_reqs	= pnfs_generic_recover_commit_reqs,

	.commit_pagelist	= ff_layout_commit_pagelist,

};



static struct pnfs_layoutdriver_type flexfilelayout_type = {

	.id			= LAYOUT_FLEX_FILES,

	.name			= "LAYOUT_FLEX_FILES",
@@ -2455,14 +2467,7 @@ static struct pnfs_layoutdriver_type flexfilelayout_type = { 
	.pg_read_ops		= &ff_layout_pg_read_ops,

	.pg_write_ops		= &ff_layout_pg_write_ops,

	.get_ds_info		= ff_layout_get_ds_info,

	.setup_ds_info		= ff_layout_setup_ds_info,

	.release_ds_info	= ff_layout_release_ds_info,

	.free_deviceid_node	= ff_layout_free_deviceid_node,

	.mark_request_commit	= pnfs_layout_mark_request_commit,

	.clear_request_commit	= pnfs_generic_clear_request_commit,

	.scan_commit_lists	= pnfs_generic_scan_commit_lists,

	.recover_commit_reqs	= pnfs_generic_recover_commit_reqs,

	.commit_pagelist	= ff_layout_commit_pagelist,

	.read_pagelist		= ff_layout_read_pagelist,

	.write_pagelist		= ff_layout_write_pagelist,

	.alloc_deviceid_node    = ff_layout_alloc_deviceid_node,

fs/nfs/pnfs.h

+70 −40
Original line number Diff line number Diff line
@@ -150,26 +150,6 @@ struct pnfs_layoutdriver_type { 
	const struct nfs_pageio_ops *pg_write_ops;



	struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode);

	void (*setup_ds_info)(struct pnfs_ds_commit_info *,

			      struct pnfs_layout_segment *);

	void (*release_ds_info)(struct pnfs_ds_commit_info *,

				struct inode *inode);

	void (*mark_request_commit) (struct nfs_page *req,

				     struct pnfs_layout_segment *lseg,

				     struct nfs_commit_info *cinfo,

				     u32 ds_commit_idx);

	void (*clear_request_commit) (struct nfs_page *req,

				      struct nfs_commit_info *cinfo);

	int (*scan_commit_lists) (struct nfs_commit_info *cinfo,

				  int max);

	void (*recover_commit_reqs) (struct list_head *list,

				     struct nfs_commit_info *cinfo);

	struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,

						struct page *page);

	int (*commit_pagelist)(struct inode *inode,

			       struct list_head *mds_pages,

			       int how,

			       struct nfs_commit_info *cinfo);



	int (*sync)(struct inode *inode, bool datasync);
@@ -192,6 +172,29 @@ struct pnfs_layoutdriver_type { 
	int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args);

};



struct pnfs_commit_ops {

	void (*setup_ds_info)(struct pnfs_ds_commit_info *,

			      struct pnfs_layout_segment *);

	void (*release_ds_info)(struct pnfs_ds_commit_info *,

				struct inode *inode);

	int (*commit_pagelist)(struct inode *inode,

			       struct list_head *mds_pages,

			       int how,

			       struct nfs_commit_info *cinfo);

	void (*mark_request_commit) (struct nfs_page *req,

				     struct pnfs_layout_segment *lseg,

				     struct nfs_commit_info *cinfo,

				     u32 ds_commit_idx);

	void (*clear_request_commit) (struct nfs_page *req,

				      struct nfs_commit_info *cinfo);

	int (*scan_commit_lists) (struct nfs_commit_info *cinfo,

				  int max);

	void (*recover_commit_reqs) (struct list_head *list,

				     struct nfs_commit_info *cinfo);

	struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,

						struct page *page);

};



struct pnfs_layout_hdr {

	refcount_t		plh_refcount;

	atomic_t		plh_outstanding; /* number of RPCs out */
@@ -461,9 +464,11 @@ static inline int 
pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,

		 struct nfs_commit_info *cinfo)

{

	if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0)

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (fl_cinfo == NULL || fl_cinfo->ncommitting == 0)

		return PNFS_NOT_ATTEMPTED;

	return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo);

	return fl_cinfo->ops->commit_pagelist(inode, mds_pages, how, cinfo);

}



static inline struct pnfs_ds_commit_info *
@@ -476,19 +481,26 @@ pnfs_get_ds_info(struct inode *inode) 
	return ld->get_ds_info(inode);

}



static inline void

pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)

{

	struct pnfs_ds_commit_info *inode_cinfo = pnfs_get_ds_info(inode);

	if (inode_cinfo != NULL)

		fl_cinfo->ops = inode_cinfo->ops;

}



static inline void

pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo)

{

	INIT_LIST_HEAD(&fl_cinfo->commits);

	fl_cinfo->ops = NULL;

}



static inline void

pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)

{

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;



	if (ld != NULL && ld->release_ds_info != NULL)

		ld->release_ds_info(fl_cinfo, inode);

	if (fl_cinfo->ops != NULL && fl_cinfo->ops->release_ds_info != NULL)

		fl_cinfo->ops->release_ds_info(fl_cinfo, inode);

}



static inline void
@@ -501,24 +513,22 @@ static inline bool 
pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,

			 struct nfs_commit_info *cinfo, u32 ds_commit_idx)

{

	struct inode *inode = d_inode(nfs_req_openctx(req)->dentry);

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (lseg == NULL || ld->mark_request_commit == NULL)

	if (!lseg || !fl_cinfo->ops->mark_request_commit)

		return false;

	ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx);

	fl_cinfo->ops->mark_request_commit(req, lseg, cinfo, ds_commit_idx);

	return true;

}



static inline bool

pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)

{

	struct inode *inode = d_inode(nfs_req_openctx(req)->dentry);

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (ld == NULL || ld->clear_request_commit == NULL)

	if (!fl_cinfo || !fl_cinfo->ops || !fl_cinfo->ops->clear_request_commit)

		return false;

	ld->clear_request_commit(req, cinfo);

	fl_cinfo->ops->clear_request_commit(req, cinfo);

	return true;

}
@@ -526,21 +536,31 @@ static inline int 
pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,

		       int max)

{

	if (cinfo->ds == NULL || cinfo->ds->nwritten == 0)

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (!fl_cinfo || fl_cinfo->nwritten == 0)

		return 0;

	else

		return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max);

	return fl_cinfo->ops->scan_commit_lists(cinfo, max);

}



static inline void

pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)

{

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (fl_cinfo && fl_cinfo->nwritten != 0)

		fl_cinfo->ops->recover_commit_reqs(head, cinfo);

}



static inline struct nfs_page *

pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,

			struct page *page)

{

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;

	struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;



	if (ld == NULL || ld->search_commit_reqs == NULL)

	if (!fl_cinfo->ops || !fl_cinfo->ops->search_commit_reqs)

		return NULL;

	return ld->search_commit_reqs(cinfo, page);

	return fl_cinfo->ops->search_commit_reqs(cinfo, page);

}



/* Should the pNFS client commit and return the layout upon a setattr */
@@ -788,6 +808,11 @@ pnfs_get_ds_info(struct inode *inode) 
	return NULL;

}



static inline void

pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)

{

}



static inline void

pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo)

{
@@ -818,6 +843,11 @@ pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, 
	return 0;

}



static inline void

pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)

{

}



static inline struct nfs_page *

pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,

			struct page *page)

fs/nfs/pnfs_nfs.c

+1 −12
Original line number Diff line number Diff line
@@ -149,17 +149,6 @@ pnfs_add_commit_array(struct pnfs_ds_commit_info *fl_cinfo, 
}

EXPORT_SYMBOL_GPL(pnfs_add_commit_array);



static void

pnfs_setup_ds_info(struct pnfs_ds_commit_info *fl_cinfo,

		struct pnfs_layout_segment *lseg)

{

	struct inode *inode = lseg->pls_layout->plh_inode;

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;



	if (ld->setup_ds_info != NULL)

		ld->setup_ds_info(fl_cinfo, lseg);

}



static struct pnfs_commit_array *

pnfs_lookup_commit_array(struct pnfs_ds_commit_info *fl_cinfo,

		struct pnfs_layout_segment *lseg)
@@ -170,7 +159,7 @@ pnfs_lookup_commit_array(struct pnfs_ds_commit_info *fl_cinfo, 
	array = pnfs_find_commit_array_by_lseg(fl_cinfo, lseg);

	if (!array) {

		rcu_read_unlock();

		pnfs_setup_ds_info(fl_cinfo, lseg);

		fl_cinfo->ops->setup_ds_info(fl_cinfo, lseg);

		rcu_read_lock();

		array = pnfs_find_commit_array_by_lseg(fl_cinfo, lseg);

	}

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