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ANDROID: sdcardfs: Copy meta-data from lower inode

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From wrapfs commit 3ee9b365e38c ("Wrapfs: properly copy meta-data after
AIO operations from lower inode")

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 35766959
Change-Id: I9a789222e27a17b8d85ce61c45397d1839f9a675
This commit is contained in:
Daniel Rosenberg
2017-04-24 16:10:21 -07:00
parent 579687073d
commit 4131f8ccf7
1 changed files with 11 additions and 1 deletions
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12
fs/sdcardfs/file.c
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@@ -358,9 +358,12 @@ ssize_t sdcardfs_read_iter(struct kiocb *iocb, struct iov_iter *iter)
get_file(lower_file); /* prevent lower_file from being released */
iocb->ki_filp = lower_file;
err = lower_file->f_op->read_iter(iocb, iter);
/* ? wait IO finish to update atime as ecryptfs ? */
iocb->ki_filp = file;
fput(lower_file);
/* update upper inode atime as needed */
if (err >= 0 || err == -EIOCBQUEUED)
fsstack_copy_attr_atime(file->f_path.dentry->d_inode,
file_inode(lower_file));
out:
return err;
}
@@ -384,6 +387,13 @@ ssize_t sdcardfs_write_iter(struct kiocb *iocb, struct iov_iter *iter)
err = lower_file->f_op->write_iter(iocb, iter);
iocb->ki_filp = file;
fput(lower_file);
/* update upper inode times/sizes as needed */
if (err >= 0 || err == -EIOCBQUEUED) {
fsstack_copy_inode_size(file->f_path.dentry->d_inode,
file_inode(lower_file));
fsstack_copy_attr_times(file->f_path.dentry->d_inode,
file_inode(lower_file));
}
out:
return err;
}