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Commit e6cf82d1 authored by Weston Andros Adamson's avatar Weston Andros Adamson Committed by Trond Myklebust
Browse files

pnfs: add pnfs_put_lseg_async 



This is useful when lsegs need to be released while holding locks.

Signed-off-by: default avatarWeston Andros Adamson <dros@primarydata.com>
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent 02d1426c

fs/nfs/pnfs.c

+17 −0
Original line number Diff line number Diff line
@@ -361,6 +361,23 @@ pnfs_put_lseg(struct pnfs_layout_segment *lseg) 
}

EXPORT_SYMBOL_GPL(pnfs_put_lseg);



static void pnfs_put_lseg_async_work(struct work_struct *work)

{

	struct pnfs_layout_segment *lseg;



	lseg = container_of(work, struct pnfs_layout_segment, pls_work);



	pnfs_put_lseg(lseg);

}



void

pnfs_put_lseg_async(struct pnfs_layout_segment *lseg)

{

	INIT_WORK(&lseg->pls_work, pnfs_put_lseg_async_work);

	schedule_work(&lseg->pls_work);

}

EXPORT_SYMBOL_GPL(pnfs_put_lseg_async);



static u64

end_offset(u64 start, u64 len)

{

fs/nfs/pnfs.h

+7 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 


#include <linux/nfs_fs.h>

#include <linux/nfs_page.h>

#include <linux/workqueue.h>



enum {

	NFS_LSEG_VALID = 0,	/* cleared when lseg is recalled/returned */
@@ -46,6 +47,7 @@ struct pnfs_layout_segment { 
	atomic_t pls_refcount;

	unsigned long pls_flags;

	struct pnfs_layout_hdr *pls_layout;

	struct work_struct pls_work;

};



enum pnfs_try_status {
@@ -181,6 +183,7 @@ extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); 
/* pnfs.c */

void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo);

void pnfs_put_lseg(struct pnfs_layout_segment *lseg);

void pnfs_put_lseg_async(struct pnfs_layout_segment *lseg);



void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);

void unset_pnfs_layoutdriver(struct nfs_server *);
@@ -419,6 +422,10 @@ static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) 
{

}



static inline void pnfs_put_lseg_async(struct pnfs_layout_segment *lseg)

{

}



static inline int pnfs_return_layout(struct inode *ino)

{

	return 0;