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f2fs: fix to restrict mount condition on readonly block device 

When we mount an unclean f2fs image in a readonly block device, let's
make mount() succeed only when there is no recoverable data in that
image, otherwise after mount(), file fsyned won't be recovered as user
expected.

Fixes: 938a184265 ("f2fs: give a warning only for readonly partition")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2021-03-31 11:16:32 +08:00 committed by Jaegeuk Kim
parent 5911d2d1d1
commit 23738e7447
1 changed files with 12 additions and 4 deletions
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16
fs/f2fs/super.c
View File

@ -3966,10 +3966,18 @@ try_onemore:
* previous checkpoint was not done by clean system shutdown.
*/
if (f2fs_hw_is_readonly(sbi)) {
if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))
f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
else
f2fs_info(sbi, "write access unavailable, skipping recovery");
if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
err = f2fs_recover_fsync_data(sbi, true);
if (err > 0) {
err = -EROFS;
f2fs_err(sbi, "Need to recover fsync data, but "
"write access unavailable, please try "
"mount w/ disable_roll_forward or norecovery");
}
if (err < 0)
goto free_meta;
}
f2fs_info(sbi, "write access unavailable, skipping recovery");
goto reset_checkpoint;
}