[git pull] fix bitmap corruption on close_range(), take 2

[Al Viro <viro@zeniv.linux.org.uk>]

Variant that deals with that in copy_fd_bitmaps() rather than in dup_fd()
Sat in -next since last week...

The following changes since commit 8aa37bde1a7b645816cda8b80df4753ecf172bf1:

  protect the fetch of ->fd[fd] in do_dup2() from mispredictions (2024-08-01 15:51:57 -0400)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git tags/pull-fixes

for you to fetch changes up to 9a2fa1472083580b6c66bdaf291f591e1170123a:

  fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE (2024-08-05 19:23:11 -0400)

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fix bitmap corruption on close_range(), take 2

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Al Viro (1):
      fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE

 fs/file.c                                       | 30 +++++++++------------
 include/linux/bitmap.h                          | 12 +++++++++
 tools/testing/selftests/core/close_range_test.c | 35 +++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 17 deletions(-)