Javier Martinez Canillas <javierm@xxxxxxxxxx> writes: > The series adds support for the renameat2 system call RENAME_EXCHANGE flag > (which allows to atomically replace two paths) to the vfat filesystem code. > > There are many use cases for this, but we are particularly interested in > making possible for vfat filesystems to be part of OSTree [0] deployments. > > Currently OSTree relies on symbolic links to make the deployment updates > an atomic transactional operation. But RENAME_EXCHANGE could be used [1] > to achieve a similar level of robustness when using a vfat filesystem. > > Patch #1 is just a preparatory patch to introduce the RENAME_EXCHANGE > support, patch #2 moves some code blocks in vfat_rename() to a set of > helper functions, that can be reused by tvfat_rename_exchange() that's > added by patch #3 and finally patch #4 adds some kselftests to test it. > > This is a v6 that addresses issues pointed out in v5: > > https://lkml.org/lkml/2022/6/9/361 > > [0]: https://github.com/ostreedev/ostree > [1]: https://github.com/ostreedev/ostree/issues/1649 Looks good this patchset. Acked-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx> Thanks. -- OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
