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vfs: make do_unlinkat retry once on ESTALE errors

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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jeff Layton 2012-12-20 16:38:04 -05:00 committed by Al Viro
parent c6ee920698
commit 5d18f8133c
1 changed files with 8 additions and 2 deletions
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10
fs/namei.c
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@ -3440,8 +3440,9 @@ static long do_unlinkat(int dfd, const char __user *pathname)
struct dentry *dentry; struct dentry *dentry;
struct nameidata nd; struct nameidata nd;
struct inode *inode = NULL; struct inode *inode = NULL;
unsigned int lookup_flags = 0;
name = user_path_parent(dfd, pathname, &nd, 0); retry:
name = user_path_parent(dfd, pathname, &nd, lookup_flags);
if (IS_ERR(name)) if (IS_ERR(name))
return PTR_ERR(name); return PTR_ERR(name);
@ -3479,6 +3480,11 @@ static long do_unlinkat(int dfd, const char __user *pathname)
exit1: exit1:
path_put(&nd.path); path_put(&nd.path);
putname(name); putname(name);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
inode = NULL;
goto retry;
}
return error; return error;
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