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f2fs crypto: zero next free dnode block

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Now page cache of meta inode is used by garbage collection for encrypted page,
it may contain random data, so we should zero it before issuing discard.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2015-05-18 18:00:06 +08:00 committed by Jaegeuk Kim
parent cfc4d971df
commit cb5c94cf3a
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/segment.c
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@ -519,7 +519,7 @@ void discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr)
if (err) { if (err) {
struct page *page = grab_meta_page(sbi, blkaddr); struct page *page = grab_meta_page(sbi, blkaddr);
/* zero-filled page */ memset(page_address(page), 0, F2FS_BLKSIZE);
set_page_dirty(page); set_page_dirty(page);
f2fs_put_page(page, 1); f2fs_put_page(page, 1);
} }