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f2fs crypto: zero next free dnode block 

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>
steinar/wifi_calib_4_9_kernel
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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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) {
struct page *page = grab_meta_page(sbi, blkaddr);
/* zero-filled page */
memset(page_address(page), 0, F2FS_BLKSIZE);
set_page_dirty(page);
f2fs_put_page(page, 1);
}