DragonFly commits List (threaded) for 2009-02
DragonFly-126.96.36.1998.g629f3 master sys/vfs/msdosfs msdosfs_denode.c
Author: Nicolas Thery <firstname.lastname@example.org>
Date: Thu Feb 26 07:30:33 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.
Summary of changes:
sys/vfs/msdosfs/msdosfs_denode.c | 26 +++++++++++++++++++++-----
1 files changed, 21 insertions(+), 5 deletions(-)
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