Messages in this thread Patch in this message | | | Date | Fri, 04 Sep 2009 17:14:27 -0700 | From | Greg KH <> | Subject | [patch 52/71] vfs: add __destroy_inode |
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2.6.30-stable review patch. If anyone has any objections, please let us know.
------------------ From: Christoph Hellwig <hch@infradead.org>
backport of upstream commit 2e00c97e2c1d2ffc9e26252ca26b237678b0b772
When we want to tear down an inode that lost the add to the cache race in XFS we must not call into ->destroy_inode because that would delete the inode that won the race from the inode cache radix tree.
This patch provides the __destroy_inode helper needed to fix this, the actual fix will be in th next patch. As XFS was the only reason destroy_inode was exported we shift the export to the new __destroy_inode.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/inode.c | 10 +++++++--- include/linux/fs.h | 1 + 2 files changed, 8 insertions(+), 3 deletions(-)
--- a/fs/inode.c +++ b/fs/inode.c @@ -220,18 +220,22 @@ static struct inode *alloc_inode(struct return inode; } -void destroy_inode(struct inode *inode) +void __destroy_inode(struct inode *inode) { BUG_ON(inode_has_buffers(inode)); ima_inode_free(inode); security_inode_free(inode); +} +EXPORT_SYMBOL(__destroy_inode); + +void destroy_inode(struct inode *inode) +{ + __destroy_inode(inode); if (inode->i_sb->s_op->destroy_inode) inode->i_sb->s_op->destroy_inode(inode); else kmem_cache_free(inode_cachep, (inode)); } -EXPORT_SYMBOL(destroy_inode); - /* * These are initializations that only need to be done --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2162,6 +2162,7 @@ extern void __iget(struct inode * inode) extern void iget_failed(struct inode *); extern void clear_inode(struct inode *); extern void destroy_inode(struct inode *); +extern void __destroy_inode(struct inode *); extern struct inode *new_inode(struct super_block *); extern int should_remove_suid(struct dentry *); extern int file_remove_suid(struct file *);
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