From 0f300ca9284caabdd2c07c7f91b90f1f530f614e Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 10 May 2007 22:22:20 -0700 Subject: [PATCH] AFS: fix a couple of problems with unlinking AFS files Fix a couple of problems with unlinking AFS files. (1) The parent directory wasn't being updated properly between unlink() and the following lookup(). It seems that, for some reason, invalidate_remote_inode() wasn't discarding the directory contents correctly, so this patch calls invalidate_inode_pages2() instead on non-regular files. (2) afs_vnode_deleted_remotely() should handle vnodes that don't have a source server recorded without oopsing. Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/afs/file.c | 2 +- fs/afs/inode.c | 10 +++++++--- fs/afs/super.c | 3 ++- fs/afs/vnode.c | 33 +++++++++++++++++++++------------ 4 files changed, 31 insertions(+), 17 deletions(-) diff --git a/fs/afs/file.c b/fs/afs/file.c index 3e25795e5a42..9c0e721d9fc2 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -236,7 +236,7 @@ static void afs_invalidatepage(struct page *page, unsigned long offset) { int ret = 1; - kenter("{%lu},%lu", page->index, offset); + _enter("{%lu},%lu", page->index, offset); BUG_ON(!PageLocked(page)); diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 515a5d12d8fb..47f5fed7195d 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -209,11 +209,15 @@ struct inode *afs_iget(struct super_block *sb, struct key *key, */ void afs_zap_data(struct afs_vnode *vnode) { - _enter("zap data {%x:%u}", vnode->fid.vid, vnode->fid.vnode); + _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode); /* nuke all the non-dirty pages that aren't locked, mapped or being - * written back */ - invalidate_remote_inode(&vnode->vfs_inode); + * written back in a regular file and completely discard the pages in a + * directory or symlink */ + if (S_ISREG(vnode->vfs_inode.i_mode)) + invalidate_remote_inode(&vnode->vfs_inode); + else + invalidate_inode_pages2(vnode->vfs_inode.i_mapping); } /* diff --git a/fs/afs/super.c b/fs/afs/super.c index d24be334b608..422f532b9b62 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -488,6 +488,7 @@ static struct inode *afs_alloc_inode(struct super_block *sb) vnode->flags = 1 << AFS_VNODE_UNSET; vnode->cb_promised = false; + _leave(" = %p", &vnode->vfs_inode); return &vnode->vfs_inode; } @@ -498,7 +499,7 @@ static void afs_destroy_inode(struct inode *inode) { struct afs_vnode *vnode = AFS_FS_I(inode); - _enter("{%lu}", inode->i_ino); + _enter("%p{%x:%u}", inode, vnode->fid.vid, vnode->fid.vnode); _debug("DESTROY INODE %p", inode); diff --git a/fs/afs/vnode.c b/fs/afs/vnode.c index ec814660209f..bea8bd9e7b2a 100644 --- a/fs/afs/vnode.c +++ b/fs/afs/vnode.c @@ -175,24 +175,33 @@ static void afs_vnode_deleted_remotely(struct afs_vnode *vnode) { struct afs_server *server; + _enter("{%p}", vnode->server); + set_bit(AFS_VNODE_DELETED, &vnode->flags); server = vnode->server; - if (vnode->cb_promised) { - spin_lock(&server->cb_lock); + if (server) { if (vnode->cb_promised) { - rb_erase(&vnode->cb_promise, &server->cb_promises); - vnode->cb_promised = false; + spin_lock(&server->cb_lock); + if (vnode->cb_promised) { + rb_erase(&vnode->cb_promise, + &server->cb_promises); + vnode->cb_promised = false; + } + spin_unlock(&server->cb_lock); } - spin_unlock(&server->cb_lock); - } - spin_lock(&vnode->server->fs_lock); - rb_erase(&vnode->server_rb, &vnode->server->fs_vnodes); - spin_unlock(&vnode->server->fs_lock); + spin_lock(&server->fs_lock); + rb_erase(&vnode->server_rb, &server->fs_vnodes); + spin_unlock(&server->fs_lock); - vnode->server = NULL; - afs_put_server(server); + vnode->server = NULL; + afs_put_server(server); + } else { + ASSERT(!vnode->cb_promised); + } + + _leave(""); } /* @@ -225,7 +234,7 @@ void afs_vnode_finalise_status_update(struct afs_vnode *vnode, */ static void afs_vnode_status_update_failed(struct afs_vnode *vnode, int ret) { - _enter("%p,%d", vnode, ret); + _enter("{%x:%u},%d", vnode->fid.vid, vnode->fid.vnode, ret); spin_lock(&vnode->lock); -- GitLab