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Diffstat (limited to 'fs/f2fs/node.c')
-rw-r--r--fs/f2fs/node.c86
1 files changed, 64 insertions, 22 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 7dd63b794..27d1a74dd 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -159,7 +159,7 @@ static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i,
head = radix_tree_lookup(&nm_i->nat_set_root, set);
if (!head) {
- head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC);
+ head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS);
INIT_LIST_HEAD(&head->entry_list);
INIT_LIST_HEAD(&head->set_list);
@@ -246,7 +246,7 @@ static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid)
{
struct nat_entry *new;
- new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_ATOMIC);
+ new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS);
f2fs_radix_tree_insert(&nm_i->nat_root, nid, new);
memset(new, 0, sizeof(struct nat_entry));
nat_set_nid(new, nid);
@@ -306,6 +306,10 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) {
unsigned char version = nat_get_version(e);
nat_set_version(e, inc_node_version(version));
+
+ /* in order to reuse the nid */
+ if (nm_i->next_scan_nid > ni->nid)
+ nm_i->next_scan_nid = ni->nid;
}
/* change address */
@@ -328,11 +332,11 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
+ int nr = nr_shrink;
- if (available_free_memory(sbi, NAT_ENTRIES))
+ if (!down_write_trylock(&nm_i->nat_tree_lock))
return 0;
- down_write(&nm_i->nat_tree_lock);
while (nr_shrink && !list_empty(&nm_i->nat_entries)) {
struct nat_entry *ne;
ne = list_first_entry(&nm_i->nat_entries,
@@ -341,7 +345,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
nr_shrink--;
}
up_write(&nm_i->nat_tree_lock);
- return nr_shrink;
+ return nr - nr_shrink;
}
/*
@@ -898,17 +902,20 @@ int truncate_xattr_node(struct inode *inode, struct page *page)
* Caller should grab and release a rwsem by calling f2fs_lock_op() and
* f2fs_unlock_op().
*/
-void remove_inode_page(struct inode *inode)
+int remove_inode_page(struct inode *inode)
{
struct dnode_of_data dn;
+ int err;
set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
- if (get_dnode_of_data(&dn, 0, LOOKUP_NODE))
- return;
+ err = get_dnode_of_data(&dn, 0, LOOKUP_NODE);
+ if (err)
+ return err;
- if (truncate_xattr_node(inode, dn.inode_page)) {
+ err = truncate_xattr_node(inode, dn.inode_page);
+ if (err) {
f2fs_put_dnode(&dn);
- return;
+ return err;
}
/* remove potential inline_data blocks */
@@ -922,6 +929,7 @@ void remove_inode_page(struct inode *inode)
/* will put inode & node pages */
truncate_node(&dn);
+ return 0;
}
struct page *new_inode_page(struct inode *inode)
@@ -991,8 +999,7 @@ fail:
/*
* Caller should do after getting the following values.
* 0: f2fs_put_page(page, 0)
- * LOCKED_PAGE: f2fs_put_page(page, 1)
- * error: nothing
+ * LOCKED_PAGE or error: f2fs_put_page(page, 1)
*/
static int read_node_page(struct page *page, int rw)
{
@@ -1010,7 +1017,6 @@ static int read_node_page(struct page *page, int rw)
if (unlikely(ni.blk_addr == NULL_ADDR)) {
ClearPageUptodate(page);
- f2fs_put_page(page, 1);
return -ENOENT;
}
@@ -1041,10 +1047,7 @@ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
return;
err = read_node_page(apage, READA);
- if (err == 0)
- f2fs_put_page(apage, 0);
- else if (err == LOCKED_PAGE)
- f2fs_put_page(apage, 1);
+ f2fs_put_page(apage, err ? 1 : 0);
}
struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
@@ -1057,10 +1060,12 @@ repeat:
return ERR_PTR(-ENOMEM);
err = read_node_page(page, READ_SYNC);
- if (err < 0)
+ if (err < 0) {
+ f2fs_put_page(page, 1);
return ERR_PTR(err);
- else if (err != LOCKED_PAGE)
+ } else if (err != LOCKED_PAGE) {
lock_page(page);
+ }
if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) {
ClearPageUptodate(page);
@@ -1096,10 +1101,12 @@ repeat:
return ERR_PTR(-ENOMEM);
err = read_node_page(page, READ_SYNC);
- if (err < 0)
+ if (err < 0) {
+ f2fs_put_page(page, 1);
return ERR_PTR(err);
- else if (err == LOCKED_PAGE)
+ } else if (err == LOCKED_PAGE) {
goto page_hit;
+ }
blk_start_plug(&plug);
@@ -1533,7 +1540,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
if (unlikely(nid >= nm_i->max_nid))
nid = 0;
- if (i++ == FREE_NID_PAGES)
+ if (++i >= FREE_NID_PAGES)
break;
}
@@ -1570,6 +1577,8 @@ retry:
/* We should not use stale free nids created by build_free_nids */
if (nm_i->fcnt && !on_build_free_nids(nm_i)) {
+ struct node_info ni;
+
f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
list_for_each_entry(i, &nm_i->free_nid_list, list)
if (i->state == NID_NEW)
@@ -1580,6 +1589,13 @@ retry:
i->state = NID_ALLOC;
nm_i->fcnt--;
spin_unlock(&nm_i->free_nid_list_lock);
+
+ /* check nid is allocated already */
+ get_node_info(sbi, *nid, &ni);
+ if (ni.blk_addr != NULL_ADDR) {
+ alloc_nid_done(sbi, *nid);
+ goto retry;
+ }
return true;
}
spin_unlock(&nm_i->free_nid_list_lock);
@@ -1636,6 +1652,32 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
kmem_cache_free(free_nid_slab, i);
}
+int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ struct free_nid *i, *next;
+ int nr = nr_shrink;
+
+ if (!mutex_trylock(&nm_i->build_lock))
+ return 0;
+
+ spin_lock(&nm_i->free_nid_list_lock);
+ list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
+ if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK)
+ break;
+ if (i->state == NID_ALLOC)
+ continue;
+ __del_from_free_nid_list(nm_i, i);
+ kmem_cache_free(free_nid_slab, i);
+ nm_i->fcnt--;
+ nr_shrink--;
+ }
+ spin_unlock(&nm_i->free_nid_list_lock);
+ mutex_unlock(&nm_i->build_lock);
+
+ return nr - nr_shrink;
+}
+
void recover_inline_xattr(struct inode *inode, struct page *page)
{
void *src_addr, *dst_addr;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-18 17:17:55 +0000