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fs: Create a generic is_dot_dotdot() utility

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De-duplicate the same functionality in several places by hoisting
the is_dot_dotdot() utility function into linux/fs.h.

Suggested-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2023-12-30 19:46:00 -05:00
parent 9473c4450e
commit 42c3732fa8
6 changed files with 14 additions and 42 deletions
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10
fs/exportfs/expfs.c
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@ -244,16 +244,6 @@ struct getdents_callback {
int sequence; /* sequence counter */
};
/* Copied from lookup_one_common() */
static inline bool is_dot_dotdot(const char *name, size_t len)
{
if (unlikely(name[0] == '.')) {
if (len < 2 || (len == 2 && name[1] == '.'))
return true;
}
return false;
}
/*
* A rather strange filldir function to capture
* the name matching the specified inode number.