[PATCH 0/2] btrfs: add __free attribute and improve xattr cleanup

[Leo Martins <loemra.dev@gmail.com>]

The first patch introduces the __free attribute to the btrfs code, allowing
for automatic memory management of certain variables. This attribute enables
the kernel to automatically call a specified function (in this case,
btrfs_free_path()) on a variable when it goes out of scope, ensuring proper
memory release and preventing potential memory leaks.

The second patch applies the __free attribute to the path variable in the
btrfs_getxattr(), btrfs_setxattr(), and btrfs_listxattr() functions, ensuring
that the memory allocated for this variable is properly released when it goes
out of scope. This improves the memory management of xattr operations in
btrfs, reducing the risk of memory-related bugs and improving overall system
stability.

As a next step, I want to extend the use of the __free attribute to other
instances where btrfs_free_path is being manually called.

Leo Martins (2):
  btrfs: use __free in linux/cleanup.h to reduce btrfs_free_path
    boilerplate
  btrfs: use __free to automatically free btrfs_path on exit

 fs/btrfs/ctree.c |  3 ++-
 fs/btrfs/ctree.h |  1 +
 fs/btrfs/xattr.c | 28 ++++++++--------------------
 3 files changed, 11 insertions(+), 21 deletions(-)

-- 
2.43.5