commit 7e50bbb134aba1df0854f171b596b3a42d35605a
author Gustavo A. R. Silva <gustavoars@kernel.org> Wed Mar 26 16:55:51 2025 -0600
committer Theodore Ts'o <tytso@mit.edu> Sat Apr 12 22:01:29 2025 -0400
tree 87d80cf78668443c388df5f6e94b4f5c0683cc86
parent ce7e8a65aa1b7e8a6833403b314fa8f2cf133119

ext4: avoid -Wflex-array-member-not-at-end warning

-Wflex-array-member-not-at-end was introduced in GCC-14, and we are
getting ready to enable it, globally.

Use the `DEFINE_RAW_FLEX()` helper for an on-stack definition of
a flexible structure where the size of the flexible-array member
is known at compile-time, and refactor the rest of the code,
accordingly.

So, with these changes, fix the following warning:

fs/ext4/mballoc.c:3041:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/Z-SF97N3AxcIMlSi@kspp
Signed-off-by: Theodore Ts'o <tytso@mit.edu>