DragonFly- rel2_2 sys/vfs/msdosfs msdosfs_denode.c

Nicolas Thery nthery at gmail.com
Sun Mar 1 11:20:43 PST 2009

Sorry this commit and the previous one were unintended.

I tried to MFC sth and used the following command-line:

git push crater rel2_2:refs/heads/DragonFly_RELEASE_2_2

(rel2_2 is the name of my local branch).

2009/3/1 Nicolas Thery <nth at crater.dragonflybsd.org>:
> commit fe7717df0d7279d431d9d7a2b431ca452ea8dc46
> Author: Nicolas Thery <nthery at gmail.com>
> Date:   Sun Mar 1 20:03:45 2009 +0100
>    msdosfs: fix deleted-but-open files handling.
>    When deleting a file, msdosfs keeps its denode in the denode cache until it is
>    reclaimed.  This causes a collision in the cache when recycling the directory
>    entry of a deleted but still open file for a new or renamed file.  This
>    collision was incorrecly handled resulting in a kernel panic (rename case) or
>    syscall error and corrupted in-core state (new file case).
>    Fix by allowing denodes pointing to the same directory entry to coexist in the
>    cache as long as a single one of them represents an existing file.
>    Reported-by: corecore@
>    Dragonfly-bug: <http://bugs.dragonflybsd.org/issue1286>
>    (cherry picked from commit 629f33a733bba046a296b5f1dfa4ef45bc388cb4)
> Summary of changes:
>  sys/vfs/msdosfs/msdosfs_denode.c |   26 +++++++++++++++++++++-----
>  1 files changed, 21 insertions(+), 5 deletions(-)
> http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/fe7717df0d7279d431d9d7a2b431ca452ea8dc46
> --
> DragonFly BSD source repository

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