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Commit 566052c5 authored by Fred Isaman's avatar Fred Isaman Committed by Trond Myklebust
Browse files

pnfs: add prefix to struct pnfs_layout_segment fields 



While we are renaming all the fields, change lo->state to lo->plh_flags.

Signed-off-by: default avatarFred Isaman <iisaman@netapp.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent daaa82d1

fs/nfs/nfs4filelayout.c

+1 −1
Original line number Diff line number Diff line
@@ -243,7 +243,7 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, 
static void

filelayout_free_lseg(struct pnfs_layout_segment *lseg)

{

	struct nfs_server *nfss = NFS_SERVER(lseg->layout->inode);

	struct nfs_server *nfss = NFS_SERVER(lseg->pls_layout->inode);

	struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);



	dprintk("--> %s\n", __func__);

fs/nfs/pnfs.c

+33 −33
Original line number Diff line number Diff line
@@ -210,9 +210,9 @@ put_layout_hdr(struct inode *inode) 
static void

init_lseg(struct pnfs_layout_hdr *lo, struct pnfs_layout_segment *lseg)

{

	INIT_LIST_HEAD(&lseg->fi_list);

	kref_init(&lseg->kref);

	lseg->layout = lo;

	INIT_LIST_HEAD(&lseg->pls_list);

	kref_init(&lseg->pls_refcount);

	lseg->pls_layout = lo;

}



/* Called without i_lock held, as the free_lseg call may sleep */
@@ -220,8 +220,8 @@ static void 
destroy_lseg(struct kref *kref)

{

	struct pnfs_layout_segment *lseg =

		container_of(kref, struct pnfs_layout_segment, kref);

	struct inode *ino = lseg->layout->inode;

		container_of(kref, struct pnfs_layout_segment, pls_refcount);

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



	dprintk("--> %s\n", __func__);

	NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);
@@ -236,8 +236,8 @@ put_lseg(struct pnfs_layout_segment *lseg) 
		return;



	dprintk("%s: lseg %p ref %d\n", __func__, lseg,

		atomic_read(&lseg->kref.refcount));

	kref_put(&lseg->kref, destroy_lseg);

		atomic_read(&lseg->pls_refcount.refcount));

	kref_put(&lseg->pls_refcount, destroy_lseg);

}



static void
@@ -249,9 +249,9 @@ pnfs_clear_lseg_list(struct pnfs_layout_hdr *lo, struct list_head *tmp_list) 
	dprintk("%s:Begin lo %p\n", __func__, lo);



	assert_spin_locked(&lo->inode->i_lock);

	list_for_each_entry_safe(lseg, next, &lo->segs, fi_list) {

	list_for_each_entry_safe(lseg, next, &lo->segs, pls_list) {

		dprintk("%s: freeing lseg %p\n", __func__, lseg);

		list_move(&lseg->fi_list, tmp_list);

		list_move(&lseg->pls_list, tmp_list);

	}

	clp = NFS_SERVER(lo->inode)->nfs_client;

	spin_lock(&clp->cl_lock);
@@ -259,7 +259,7 @@ pnfs_clear_lseg_list(struct pnfs_layout_hdr *lo, struct list_head *tmp_list) 
	list_del_init(&lo->layouts);

	spin_unlock(&clp->cl_lock);

	write_seqlock(&lo->seqlock);

	clear_bit(NFS_LAYOUT_STATEID_SET, &lo->state);

	clear_bit(NFS_LAYOUT_STATEID_SET, &lo->plh_flags);

	write_sequnlock(&lo->seqlock);



	dprintk("%s:Return\n", __func__);
@@ -272,9 +272,9 @@ pnfs_free_lseg_list(struct list_head *tmp_list) 


	while (!list_empty(tmp_list)) {

		lseg = list_entry(tmp_list->next, struct pnfs_layout_segment,

				fi_list);

				pls_list);

		dprintk("%s calling put_lseg on %p\n", __func__, lseg);

		list_del(&lseg->fi_list);

		list_del(&lseg->pls_list);

		put_lseg(lseg);

	}

}
@@ -331,7 +331,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, 
	bool overwrite = false;



	write_seqlock(&lo->seqlock);

	if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->state) ||

	if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->plh_flags) ||

	    memcmp(old->stateid.other, new->stateid.other, sizeof(new->stateid.other)))

		overwrite = true;

	else {
@@ -360,7 +360,7 @@ pnfs_layout_from_open_stateid(struct pnfs_layout_hdr *lo, 
		memcpy(lo->stateid.data, state->stateid.data,

		       sizeof(state->stateid.data));

	} while (read_seqretry(&state->seqlock, seq));

	set_bit(NFS_LAYOUT_STATEID_SET, &lo->state);

	set_bit(NFS_LAYOUT_STATEID_SET, &lo->plh_flags);

	write_sequnlock(&lo->seqlock);

	dprintk("<-- %s\n", __func__);

}
@@ -374,7 +374,7 @@ pnfs_get_layout_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, 
	dprintk("--> %s\n", __func__);

	do {

		seq = read_seqbegin(&lo->seqlock);

		if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->state)) {

		if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->plh_flags)) {

			/* This will trigger retry of the read */

			pnfs_layout_from_open_stateid(lo, open_state);

		} else
@@ -424,7 +424,7 @@ send_layoutget(struct pnfs_layout_hdr *lo, 
	nfs4_proc_layoutget(lgp);

	if (!lseg) {

		/* remember that LAYOUTGET failed and suspend trying */

		set_bit(lo_fail_bit(iomode), &lo->state);

		set_bit(lo_fail_bit(iomode), &lo->plh_flags);

	}

	return lseg;

}
@@ -459,26 +459,26 @@ pnfs_insert_layout(struct pnfs_layout_hdr *lo, 
		list_add_tail(&lo->layouts, &clp->cl_layouts);

		spin_unlock(&clp->cl_lock);

	}

	list_for_each_entry(lp, &lo->segs, fi_list) {

		if (cmp_layout(lp->range.iomode, lseg->range.iomode) > 0)

	list_for_each_entry(lp, &lo->segs, pls_list) {

		if (cmp_layout(lp->pls_range.iomode, lseg->pls_range.iomode) > 0)

			continue;

		list_add_tail(&lseg->fi_list, &lp->fi_list);

		list_add_tail(&lseg->pls_list, &lp->pls_list);

		dprintk("%s: inserted lseg %p "

			"iomode %d offset %llu length %llu before "

			"lp %p iomode %d offset %llu length %llu\n",

			__func__, lseg, lseg->range.iomode,

			lseg->range.offset, lseg->range.length,

			lp, lp->range.iomode, lp->range.offset,

			lp->range.length);

			__func__, lseg, lseg->pls_range.iomode,

			lseg->pls_range.offset, lseg->pls_range.length,

			lp, lp->pls_range.iomode, lp->pls_range.offset,

			lp->pls_range.length);

		found = 1;

		break;

	}

	if (!found) {

		list_add_tail(&lseg->fi_list, &lo->segs);

		list_add_tail(&lseg->pls_list, &lo->segs);

		dprintk("%s: inserted lseg %p "

			"iomode %d offset %llu length %llu at tail\n",

			__func__, lseg, lseg->range.iomode,

			lseg->range.offset, lseg->range.length);

			__func__, lseg, lseg->pls_range.iomode,

			lseg->pls_range.offset, lseg->pls_range.length);

	}

	get_layout_hdr_locked(lo);
@@ -538,7 +538,7 @@ pnfs_find_alloc_layout(struct inode *ino) 
static int

is_matching_lseg(struct pnfs_layout_segment *lseg, u32 iomode)

{

	return (iomode != IOMODE_RW || lseg->range.iomode == IOMODE_RW);

	return (iomode != IOMODE_RW || lseg->pls_range.iomode == IOMODE_RW);

}



/*
@@ -552,17 +552,17 @@ pnfs_has_layout(struct pnfs_layout_hdr *lo, u32 iomode) 
	dprintk("%s:Begin\n", __func__);



	assert_spin_locked(&lo->inode->i_lock);

	list_for_each_entry(lseg, &lo->segs, fi_list) {

	list_for_each_entry(lseg, &lo->segs, pls_list) {

		if (is_matching_lseg(lseg, iomode)) {

			ret = lseg;

			break;

		}

		if (cmp_layout(iomode, lseg->range.iomode) > 0)

		if (cmp_layout(iomode, lseg->pls_range.iomode) > 0)

			break;

	}



	dprintk("%s:Return lseg %p ref %d\n",

		__func__, ret, ret ? atomic_read(&ret->kref.refcount) : 0);

		__func__, ret, ret ? atomic_read(&ret->pls_refcount.refcount) : 0);

	return ret;

}
@@ -597,7 +597,7 @@ pnfs_update_layout(struct inode *ino, 
	}



	/* if LAYOUTGET already failed once we don't try again */

	if (test_bit(lo_fail_bit(iomode), &nfsi->layout->state))

	if (test_bit(lo_fail_bit(iomode), &nfsi->layout->plh_flags))

		goto out_unlock;



	get_layout_hdr_locked(lo); /* Matched in nfs4_layoutget_release */
@@ -606,7 +606,7 @@ pnfs_update_layout(struct inode *ino, 
	lseg = send_layoutget(lo, ctx, iomode);

out:

	dprintk("%s end, state 0x%lx lseg %p\n", __func__,

		nfsi->layout->state, lseg);

		nfsi->layout->plh_flags, lseg);

	return lseg;

out_unlock:

	spin_unlock(&ino->i_lock);
@@ -636,7 +636,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) 


	spin_lock(&ino->i_lock);

	init_lseg(lo, lseg);

	lseg->range = res->range;

	lseg->pls_range = res->range;

	*lgp->lsegpp = lseg;

	pnfs_insert_layout(lo, lseg);

fs/nfs/pnfs.h

+5 −5
Original line number Diff line number Diff line
@@ -31,10 +31,10 @@ 
#define FS_NFS_PNFS_H



struct pnfs_layout_segment {

	struct list_head fi_list;

	struct pnfs_layout_range range;

	struct kref kref;

	struct pnfs_layout_hdr *layout;

	struct list_head pls_list;

	struct pnfs_layout_range pls_range;

	struct kref pls_refcount;

	struct pnfs_layout_hdr *pls_layout;

};



#ifdef CONFIG_NFS_V4_1
@@ -65,7 +65,7 @@ struct pnfs_layout_hdr { 
	struct list_head	segs;      /* layout segments list */

	seqlock_t		seqlock;   /* Protects the stateid */

	nfs4_stateid		stateid;

	unsigned long		state;

	unsigned long		plh_flags;

	struct inode		*inode;

};