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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-04 02:51:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-05 12:29:16 -0700 |
| commit | 6d09bb627d2470299dfb1af0e6d27fb4aece9196 (patch) | |
| tree | ce62b91f11c5df5fbee41aa053b33add79c2c37a /arch | |
| parent | c7d2d28b9851d0ffc9924b0e36bac806d18ebf25 (diff) | |
| download | blackbird-op-linux-6d09bb627d2470299dfb1af0e6d27fb4aece9196.tar.gz blackbird-op-linux-6d09bb627d2470299dfb1af0e6d27fb4aece9196.zip | |
[PATCH] fs/namei.c: Call to file_permission() under a spinlock in do_lookup_path()
From: Trond Myklebust <Trond.Myklebust@netapp.com>
We're presently running lock_kernel() under fs_lock via nfs's ->permission
handler. That's a ranking bug and sometimes a sleep-in-spinlock bug. This
problem was introduced in the openat() patchset.
We should not need to hold the current->fs->lock for a codepath that doesn't
use current->fs.
[vsu@altlinux.ru: fix error path]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions
