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f2fs: invalidate inmemory page 

If user truncates file's data, we should truncate inmemory pages too.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
hifive-unleashed-5.1
Jaegeuk Kim 2014-10-09 13:39:06 -07:00
parent 34ba94bac9
commit cbcb2872e3
3 changed files with 20 additions and 0 deletions
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3
fs/f2fs/data.c
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@ -1116,6 +1116,9 @@ static void f2fs_invalidate_data_page(struct page *page, unsigned int offset,
if (offset % PAGE_CACHE_SIZE || length != PAGE_CACHE_SIZE)
return;
if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode))
invalidate_inmem_page(inode, page);
if (PageDirty(page))
inode_dec_dirty_pages(inode);
ClearPagePrivate(page);

1
fs/f2fs/f2fs.h
View File

@ -1297,6 +1297,7 @@ void destroy_node_manager_caches(void);
* segment.c
*/
void register_inmem_page(struct inode *, struct page *);
void invalidate_inmem_page(struct inode *, struct page *);
void commit_inmem_pages(struct inode *, bool);
void f2fs_balance_fs(struct f2fs_sb_info *);
void f2fs_balance_fs_bg(struct f2fs_sb_info *);

16
fs/f2fs/segment.c
View File

@ -203,6 +203,22 @@ retry:
mutex_unlock(&fi->inmem_lock);
}
void invalidate_inmem_page(struct inode *inode, struct page *page)
{
struct f2fs_inode_info *fi = F2FS_I(inode);
struct inmem_pages *cur;
mutex_lock(&fi->inmem_lock);
cur = radix_tree_lookup(&fi->inmem_root, page->index);
if (cur) {
radix_tree_delete(&fi->inmem_root, cur->page->index);
f2fs_put_page(cur->page, 0);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
}
mutex_unlock(&fi->inmem_lock);
}
void commit_inmem_pages(struct inode *inode, bool abort)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);