[PATCH 00/10] [v3] safely drop directory dentry on failed revalidate

[Miklos Szeredi]

Here's a series for fixing issues with d_drop on a directory dentry with
children and adding support for such dropped directories in fuse.

This one adds a helper for walking the dentry tree.  This reduces code
duplication and reduces the chances of a bug creeping into one of the instances.

The only user of have_submounts() is now autofs4, but after discussing with Ian
I'm still not sure how we should deal with that.

Thanks,
Miklos

---
Anand Avati (1):
      fuse: drop dentry on failed revalidate

Miklos Szeredi (9):
      vfs: add d_walk()
      vfs: check submounts and drop atomically
      vfs: check unlinked ancestors before mount
      afs: use check_submounts_and_drop()
      gfs2: use check_submounts_and_drop()
      nfs: use check_submounts_and_drop()
      sysfs: use check_submounts_and_drop()
      fuse: use d_materialise_unique()
      fuse: clean up return in fuse_dentry_revalidate()

---
 fs/afs/dir.c           |  10 +-
 fs/dcache.c            | 452 +++++++++++++++++++++++++++++++------------------
 fs/fuse/dir.c          |  97 +++++------
 fs/gfs2/dentry.c       |   9 +-
 fs/internal.h          |   1 +
 fs/namespace.c         |   9 +
 fs/nfs/dir.c           |   9 +-
 fs/sysfs/dir.c         |  20 +--
 include/linux/dcache.h |   1 +
 9 files changed, 364 insertions(+), 244 deletions(-)

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