new helper: end_writeback()
Essentially, the minimal variant of ->evict_inode(). It's a trimmed-down clear_inode(), sans any fs callbacks. Once it returns we know that no async writeback will be happening; every ->evict_inode() instance should do that once and do that before doing anything ->write_inode() could interfere with (e.g. freeing the on-disk inode). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -374,7 +374,7 @@ static void truncate_hugepages(struct inode *inode, loff_t lstart)
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static void hugetlbfs_evict_inode(struct inode *inode)
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{
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truncate_hugepages(inode, 0);
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clear_inode(inode);
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end_writeback(inode);
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}
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static inline void
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12
fs/inode.c
12
fs/inode.c
@ -294,6 +294,18 @@ void __iget(struct inode *inode)
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inodes_stat.nr_unused--;
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}
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void end_writeback(struct inode *inode)
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{
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might_sleep();
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BUG_ON(inode->i_data.nrpages);
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BUG_ON(!list_empty(&inode->i_data.private_list));
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BUG_ON(!(inode->i_state & I_FREEING));
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BUG_ON(inode->i_state & I_CLEAR);
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inode_sync_wait(inode);
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inode->i_state = I_FREEING | I_CLEAR;
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}
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EXPORT_SYMBOL(end_writeback);
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/**
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* clear_inode - clear an inode
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* @inode: inode to clear
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@ -2184,6 +2184,7 @@ extern void unlock_new_inode(struct inode *);
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extern void __iget(struct inode * inode);
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extern void iget_failed(struct inode *);
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extern void clear_inode(struct inode *);
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extern void end_writeback(struct inode *);
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extern void destroy_inode(struct inode *);
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extern void __destroy_inode(struct inode *);
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extern struct inode *new_inode(struct super_block *);
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