fuse: make fuse_dentry_revalidate() RCU aware
Only bail out of fuse_dentry_revalidate() on LOOKUP_RCU when blocking is actually necessary. CC: Nick Piggin <npiggin@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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1 changed files with 4 additions and 4 deletions
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@ -158,10 +158,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
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{
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{
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struct inode *inode;
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struct inode *inode;
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if (nd && nd->flags & LOOKUP_RCU)
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inode = ACCESS_ONCE(entry->d_inode);
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return -ECHILD;
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inode = entry->d_inode;
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if (inode && is_bad_inode(inode))
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if (inode && is_bad_inode(inode))
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return 0;
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return 0;
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else if (fuse_dentry_time(entry) < get_jiffies_64()) {
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else if (fuse_dentry_time(entry) < get_jiffies_64()) {
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@ -177,6 +174,9 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
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if (!inode)
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if (!inode)
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return 0;
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return 0;
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if (nd->flags & LOOKUP_RCU)
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return -ECHILD;
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fc = get_fuse_conn(inode);
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fc = get_fuse_conn(inode);
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req = fuse_get_req(fc);
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req = fuse_get_req(fc);
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if (IS_ERR(req))
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if (IS_ERR(req))
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