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-rw-r--r--fs/nfs/pnfs.c42
-rw-r--r--fs/nfs/pnfs_nfs.c50
2 files changed, 44 insertions, 48 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index a6ec420983d1..6151f39c8291 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -368,7 +368,6 @@ pnfs_prepare_layoutreturn(struct pnfs_layout_hdr *lo)
if (test_and_set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags))
return false;
lo->plh_return_iomode = 0;
- lo->plh_block_lgets++;
pnfs_get_layout_hdr(lo);
clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, &lo->plh_flags);
return true;
@@ -817,25 +816,12 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo,
return !pnfs_seqid_is_newer(seqid, lo->plh_barrier);
}
-static bool
-pnfs_layout_returning(const struct pnfs_layout_hdr *lo,
- struct pnfs_layout_range *range)
-{
- return test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) &&
- (lo->plh_return_iomode == IOMODE_ANY ||
- lo->plh_return_iomode == range->iomode);
-}
-
/* lget is set to 1 if called from inside send_layoutget call chain */
static bool
-pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo,
- struct pnfs_layout_range *range, int lget)
+pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo)
{
return lo->plh_block_lgets ||
- test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
- (list_empty(&lo->plh_segs) &&
- (atomic_read(&lo->plh_outstanding) > lget)) ||
- pnfs_layout_returning(lo, range);
+ test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
}
int
@@ -847,7 +833,7 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
dprintk("--> %s\n", __func__);
spin_lock(&lo->plh_inode->i_lock);
- if (pnfs_layoutgets_blocked(lo, range, 1)) {
+ if (pnfs_layoutgets_blocked(lo)) {
status = -EAGAIN;
} else if (!nfs4_valid_open_stateid(open_state)) {
status = -EBADF;
@@ -956,9 +942,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid,
if (unlikely(lrp == NULL)) {
status = -ENOMEM;
spin_lock(&ino->i_lock);
- lo->plh_block_lgets--;
pnfs_clear_layoutreturn_waitbit(lo);
- rpc_wake_up(&NFS_SERVER(ino)->roc_rpcwaitq);
spin_unlock(&ino->i_lock);
pnfs_put_layout_hdr(lo);
goto out;
@@ -1107,7 +1091,9 @@ bool pnfs_roc(struct inode *ino)
}
if (!found)
goto out_noroc;
- lo->plh_block_lgets++;
+ if (test_and_set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags))
+ goto out_noroc;
+ lo->plh_return_iomode = IOMODE_ANY;
pnfs_get_layout_hdr(lo); /* matched in pnfs_roc_release */
spin_unlock(&ino->i_lock);
pnfs_free_lseg_list(&tmp_list);
@@ -1135,7 +1121,7 @@ void pnfs_roc_release(struct inode *ino)
spin_lock(&ino->i_lock);
lo = NFS_I(ino)->layout;
- lo->plh_block_lgets--;
+ pnfs_clear_layoutreturn_waitbit(lo);
if (atomic_dec_and_test(&lo->plh_refcount)) {
pnfs_detach_layout_hdr(lo);
spin_unlock(&ino->i_lock);
@@ -1438,6 +1424,8 @@ static int pnfs_layoutget_retry_bit_wait(struct wait_bit_key *key)
static bool pnfs_prepare_to_retry_layoutget(struct pnfs_layout_hdr *lo)
{
+ if (!pnfs_should_retry_layoutget(lo))
+ return false;
/*
* send layoutcommit as it can hold up layoutreturn due to lseg
* reference
@@ -1533,8 +1521,7 @@ lookup_again:
* Because we free lsegs before sending LAYOUTRETURN, we need to wait
* for LAYOUTRETURN even if first is true.
*/
- if (!lseg && pnfs_should_retry_layoutget(lo) &&
- test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {
+ if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {
spin_unlock(&ino->i_lock);
dprintk("%s wait for layoutreturn\n", __func__);
if (pnfs_prepare_to_retry_layoutget(lo)) {
@@ -1547,7 +1534,7 @@ lookup_again:
goto out_put_layout_hdr;
}
- if (pnfs_layoutgets_blocked(lo, &arg, 0))
+ if (pnfs_layoutgets_blocked(lo))
goto out_unlock;
atomic_inc(&lo->plh_outstanding);
spin_unlock(&ino->i_lock);
@@ -1619,12 +1606,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
lseg->pls_range = res->range;
spin_lock(&ino->i_lock);
- if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
- dprintk("%s forget reply due to recall\n", __func__);
- goto out_forget_reply;
- }
-
- if (pnfs_layoutgets_blocked(lo, &lgp->args.range, 1)) {
+ if (pnfs_layoutgets_blocked(lo)) {
dprintk("%s forget reply due to state\n", __func__);
goto out_forget_reply;
}
diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
index e5c679f04099..bbd407b6bc1f 100644
--- a/fs/nfs/pnfs_nfs.c
+++ b/fs/nfs/pnfs_nfs.c
@@ -124,11 +124,12 @@ pnfs_generic_scan_ds_commit_list(struct pnfs_commit_bucket *bucket,
if (ret) {
cinfo->ds->nwritten -= ret;
cinfo->ds->ncommitting += ret;
- bucket->clseg = bucket->wlseg;
- if (list_empty(src))
+ if (bucket->clseg == NULL)
+ bucket->clseg = pnfs_get_lseg(bucket->wlseg);
+ if (list_empty(src)) {
+ pnfs_put_lseg_locked(bucket->wlseg);
bucket->wlseg = NULL;
- else
- pnfs_get_lseg(bucket->clseg);
+ }
}
return ret;
}
@@ -182,19 +183,23 @@ static void pnfs_generic_retry_commit(struct nfs_commit_info *cinfo, int idx)
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
struct pnfs_commit_bucket *bucket;
struct pnfs_layout_segment *freeme;
+ LIST_HEAD(pages);
int i;
+ spin_lock(cinfo->lock);
for (i = idx; i < fl_cinfo->nbuckets; i++) {
bucket = &fl_cinfo->buckets[i];
if (list_empty(&bucket->committing))
continue;
- nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo, i);
- spin_lock(cinfo->lock);
freeme = bucket->clseg;
bucket->clseg = NULL;
+ list_splice_init(&bucket->committing, &pages);
spin_unlock(cinfo->lock);
+ nfs_retry_commit(&pages, freeme, cinfo, i);
pnfs_put_lseg(freeme);
+ spin_lock(cinfo->lock);
}
+ spin_unlock(cinfo->lock);
}
static unsigned int
@@ -216,10 +221,6 @@ pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo,
if (!data)
break;
data->ds_commit_index = i;
- spin_lock(cinfo->lock);
- data->lseg = bucket->clseg;
- bucket->clseg = NULL;
- spin_unlock(cinfo->lock);
list_add(&data->pages, list);
nreq++;
}
@@ -229,6 +230,22 @@ pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo,
return nreq;
}
+static inline
+void pnfs_fetch_commit_bucket_list(struct list_head *pages,
+ struct nfs_commit_data *data,
+ struct nfs_commit_info *cinfo)
+{
+ struct pnfs_commit_bucket *bucket;
+
+ bucket = &cinfo->ds->buckets[data->ds_commit_index];
+ spin_lock(cinfo->lock);
+ list_splice_init(pages, &bucket->committing);
+ data->lseg = bucket->clseg;
+ bucket->clseg = NULL;
+ spin_unlock(cinfo->lock);
+
+}
+
/* This follows nfs_commit_list pretty closely */
int
pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
@@ -243,7 +260,7 @@ pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
if (!list_empty(mds_pages)) {
data = nfs_commitdata_alloc();
if (data != NULL) {
- data->lseg = NULL;
+ data->ds_commit_index = -1;
list_add(&data->pages, &list);
nreq++;
} else {
@@ -265,19 +282,16 @@ pnfs_generic_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
list_for_each_entry_safe(data, tmp, &list, pages) {
list_del_init(&data->pages);
- if (!data->lseg) {
+ if (data->ds_commit_index < 0) {
nfs_init_commit(data, mds_pages, NULL, cinfo);
nfs_initiate_commit(NFS_CLIENT(inode), data,
NFS_PROTO(data->inode),
data->mds_ops, how, 0);
} else {
- struct pnfs_commit_bucket *buckets;
+ LIST_HEAD(pages);
- buckets = cinfo->ds->buckets;
- nfs_init_commit(data,
- &buckets[data->ds_commit_index].committing,
- data->lseg,
- cinfo);
+ pnfs_fetch_commit_bucket_list(&pages, data, cinfo);
+ nfs_init_commit(data, &pages, data->lseg, cinfo);
initiate_commit(data, how);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 06:04:10 +0000