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f2fs: do not make dirty any inmemory pages

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This patch let inmemory pages be clean all the time.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-10-09 13:19:53 -07:00
parent f4ca536f71
commit 34ba94bac9
4 changed files with 22 additions and 5 deletions
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11
fs/f2fs/data.c
View File

@ -1052,10 +1052,7 @@ static int f2fs_write_end(struct file *file,
trace_f2fs_write_end(inode, pos, len, copied);
if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode))
register_inmem_page(inode, page);
else
set_page_dirty(page);
set_page_dirty(page);
if (pos + copied > i_size_read(inode)) {
i_size_write(inode, pos + copied);
@ -1138,6 +1135,12 @@ static int f2fs_set_data_page_dirty(struct page *page)
trace_f2fs_set_page_dirty(page, DATA);
SetPageUptodate(page);
if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) {
register_inmem_page(inode, page);
return 1;
}
mark_inode_dirty(inode);
if (!PageDirty(page)) {

1
fs/f2fs/f2fs.h
View File

@ -269,6 +269,7 @@ struct f2fs_inode_info {
struct extent_info ext; /* in-memory extent cache entry */
struct dir_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 */
};

14
fs/f2fs/segment.c
View File

@ -178,7 +178,8 @@ void register_inmem_page(struct inode *inode, struct page *page)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
struct inmem_pages *new;
int err;
retry:
new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
/* add atomic page indices to the list */
@ -187,6 +188,16 @@ void register_inmem_page(struct inode *inode, struct page *page)
/* 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);
kmem_cache_free(inmem_entry_slab, new);
goto retry;
}
get_page(page);
list_add_tail(&new->list, &fi->inmem_pages);
mutex_unlock(&fi->inmem_lock);
@ -216,6 +227,7 @@ void commit_inmem_pages(struct inode *inode, bool abort)
do_write_data_page(cur->page, &fio);
submit_bio = true;
}
radix_tree_delete(&fi->inmem_root, cur->page->index);
f2fs_put_page(cur->page, 1);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);

1
fs/f2fs/super.c
View File

@ -373,6 +373,7 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
fi->i_advise = 0;
rwlock_init(&fi->ext.ext_lock);
init_rwsem(&fi->i_sem);
INIT_RADIX_TREE(&fi->inmem_root, GFP_NOFS);
INIT_LIST_HEAD(&fi->inmem_pages);
mutex_init(&fi->inmem_lock);