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f2fs: clear page's up-to-date if block was deallocated 

If page's on-disk block was deallocated, let's remove up-to-date flag to avoid
further access with wrong contents.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-02-25 19:25:01 -08:00
parent 3c64298579
commit 2bca1e2388
3 changed files with 8 additions and 1 deletions
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6
fs/f2fs/data.c
View File

@ -1259,8 +1259,10 @@ int do_write_data_page(struct page *page, struct f2fs_io_info *fio)
fio->blk_addr = dn.data_blkaddr;
/* This page is already truncated */
if (fio->blk_addr == NULL_ADDR)
if (fio->blk_addr == NULL_ADDR) {
ClearPageUptodate(page);
goto out_writepage;
}
set_page_writeback(page);
@ -1355,6 +1357,8 @@ done:
clear_cold_data(page);
out:
inode_dec_dirty_pages(inode);
if (err)
ClearPageUptodate(page);
unlock_page(page);
if (need_balance_fs)
f2fs_balance_fs(sbi);

1
fs/f2fs/dir.c
View File

@ -682,6 +682,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
if (bit_pos == NR_DENTRY_IN_BLOCK) {
truncate_hole(dir, page->index, page->index + 1);
clear_page_dirty_for_io(page);
ClearPagePrivate(page);
ClearPageUptodate(page);
inode_dec_dirty_pages(dir);
}

2
fs/f2fs/node.c
View File

@ -1002,6 +1002,7 @@ static int read_node_page(struct page *page, int rw)
get_node_info(sbi, page->index, &ni);
if (unlikely(ni.blk_addr == NULL_ADDR)) {
ClearPageUptodate(page);
f2fs_put_page(page, 1);
return -ENOENT;
}
@ -1313,6 +1314,7 @@ static int f2fs_write_node_page(struct page *page,
/* This page is already truncated */
if (unlikely(ni.blk_addr == NULL_ADDR)) {
ClearPageUptodate(page);
dec_page_count(sbi, F2FS_DIRTY_NODES);
unlock_page(page);
return 0;