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[0/3] fs: tweak mntns iteration

Message ID 20241215-vfs-6-14-mount-work-v1-0-fd55922c4af8@kernel.org (mailing list archive)
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Series fs: tweak mntns iteration | expand

Message

Christian Brauner Dec. 15, 2024, 8:17 p.m. UTC 
Make finding the last or first mount to start iterating the mount
namespace from an O(1) operation and add selftests for iterating the
mount table starting from the first and last mount.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
Christian Brauner (3):
      fs: kill MNT_ONRB
      fs: cache first and last mount
      selftests: add listmount() iteration tests

 fs/mount.h                                         | 28 ++++++---
 fs/namespace.c                                     | 31 ++++++----
 include/linux/mount.h                              |  3 +-
 .../selftests/filesystems/statmount/Makefile       |  2 +-
 .../filesystems/statmount/listmount_test.c         | 66 ++++++++++++++++++++++
 5 files changed, 107 insertions(+), 23 deletions(-)
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base-commit: 7664f78ba0c5f1466d0086e5db7039f971b3cc51
change-id: 20241215-vfs-6-14-mount-work-7f8591d51060