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-rw-r--r--fs/f2fs/data.c20
-rw-r--r--fs/f2fs/f2fs.h1
-rw-r--r--fs/f2fs/segment.c25
-rw-r--r--fs/f2fs/segment.h9
-rw-r--r--fs/f2fs/super.c1
5 files changed, 36 insertions, 20 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7ea8eda8f137..cad9ebe45692 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1558,6 +1558,11 @@ void f2fs_invalidate_page(struct page *page, unsigned int offset,
else
inode_dec_dirty_pages(inode);
}
+
+ /* This is atomic written page, keep Private */
+ if (IS_ATOMIC_WRITTEN_PAGE(page))
+ return;
+
ClearPagePrivate(page);
}
@@ -1567,6 +1572,10 @@ int f2fs_release_page(struct page *page, gfp_t wait)
if (PageDirty(page))
return 0;
+ /* This is atomic written page, keep Private */
+ if (IS_ATOMIC_WRITTEN_PAGE(page))
+ return 0;
+
ClearPagePrivate(page);
return 1;
}
@@ -1581,8 +1590,15 @@ static int f2fs_set_data_page_dirty(struct page *page)
SetPageUptodate(page);
if (f2fs_is_atomic_file(inode)) {
- register_inmem_page(inode, page);
- return 1;
+ if (!IS_ATOMIC_WRITTEN_PAGE(page)) {
+ register_inmem_page(inode, page);
+ return 1;
+ }
+ /*
+ * Previously, this page has been registered, we just
+ * return here.
+ */
+ return 0;
}
if (!PageDirty(page)) {
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 09cb365a07cc..38847942edeb 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -424,7 +424,6 @@ struct f2fs_inode_info {
unsigned long long xattr_ver; /* cp version of xattr modification */
struct inode_entry *dirty_dir; /* the pointer of dirty dir */
- struct radix_tree_root inmem_root; /* radix tree for inmem pages */
struct list_head inmem_pages; /* inmemory pages managed by f2fs */
struct mutex inmem_lock; /* lock for inmemory pages */
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 1f1200487c44..7d53cb44c617 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -197,28 +197,20 @@ void register_inmem_page(struct inode *inode, struct page *page)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
struct inmem_pages *new;
- int err;
- SetPagePrivate(page);
f2fs_trace_pid(page);
+ set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE);
+ SetPagePrivate(page);
+
new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
/* add atomic page indices to the list */
new->page = page;
INIT_LIST_HEAD(&new->list);
-retry:
+
/* increase reference count with clean state */
mutex_lock(&fi->inmem_lock);
- err = radix_tree_insert(&fi->inmem_root, page->index, new);
- if (err == -EEXIST) {
- mutex_unlock(&fi->inmem_lock);
- kmem_cache_free(inmem_entry_slab, new);
- return;
- } else if (err) {
- mutex_unlock(&fi->inmem_lock);
- goto retry;
- }
get_page(page);
list_add_tail(&new->list, &fi->inmem_pages);
inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
@@ -255,8 +247,8 @@ int commit_inmem_pages(struct inode *inode, bool abort)
mutex_lock(&fi->inmem_lock);
list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
+ lock_page(cur->page);
if (!abort) {
- lock_page(cur->page);
if (cur->page->mapping == inode->i_mapping) {
set_page_dirty(cur->page);
f2fs_wait_on_page_writeback(cur->page, DATA);
@@ -271,12 +263,13 @@ int commit_inmem_pages(struct inode *inode, bool abort)
break;
}
}
- f2fs_put_page(cur->page, 1);
} else {
trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);
- put_page(cur->page);
}
- radix_tree_delete(&fi->inmem_root, cur->page->index);
+ set_page_private(cur->page, 0);
+ ClearPagePrivate(cur->page);
+ f2fs_put_page(cur->page, 1);
+
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 230f9cd9fa2a..d0bd952b7065 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -177,6 +177,15 @@ struct segment_allocation {
void (*allocate_segment)(struct f2fs_sb_info *, int, bool);
};
+/*
+ * this value is set in page as a private data which indicate that
+ * the page is atomically written, and it is in inmem_pages list.
+ */
+#define ATOMIC_WRITTEN_PAGE 0x0000ffff
+
+#define IS_ATOMIC_WRITTEN_PAGE(page) \
+ (page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
+
struct inmem_pages {
struct list_head list;
struct page *page;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 12eb69dd38af..a79b6b5a4eeb 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -423,7 +423,6 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
fi->i_current_depth = 1;
fi->i_advise = 0;
init_rwsem(&fi->i_sem);
- INIT_RADIX_TREE(&fi->inmem_root, GFP_NOFS);
INIT_LIST_HEAD(&fi->inmem_pages);
mutex_init(&fi->inmem_lock);