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f2fs: enforce fsync_mode=strict for renamed directory 

This is to give a option for user to be able to recover B/foo in the below
case.

mkdir A
sync()
rename(A, B)
creat (B/foo)
fsync (B/foo)
---crash---

Sugessted-by: Velayudhan Pillai <vijay@cs.utexas.edu>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2018-04-24 22:43:01 -06:00
parent 8a29c1260e
commit ade990f95e
1 changed files with 4 additions and 1 deletions
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5
fs/f2fs/namei.c
View File

@ -973,8 +973,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
f2fs_put_page(old_dir_page, 0); f2fs_put_page(old_dir_page, 0);
f2fs_i_links_write(old_dir, false); f2fs_i_links_write(old_dir, false);
} }
if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
if (S_ISDIR(old_inode->i_mode))
add_ino_entry(sbi, old_inode->i_ino, TRANS_DIR_INO);
}
f2fs_unlock_op(sbi); f2fs_unlock_op(sbi);