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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
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+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)
{
+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;