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d_path: make prepend_name() boolean

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It returns only 0 or -ENAMETOOLONG and both callers only check if
the result is negative.  Might as well return true on success and
false on failure...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2021-05-17 22:41:11 -04:00
parent 01a4428ee7
commit 95b55c42f6
1 changed files with 6 additions and 6 deletions
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12
fs/d_path.c
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@ -34,15 +34,15 @@ static void prepend(char **buffer, int *buflen, const char *str, int namelen)
* *
* Load acquire is needed to make sure that we see that terminating NUL. * Load acquire is needed to make sure that we see that terminating NUL.
*/ */
static int prepend_name(char **buffer, int *buflen, const struct qstr *name) static bool prepend_name(char **buffer, int *buflen, const struct qstr *name)
{ {
const char *dname = smp_load_acquire(&name->name); /* ^^^ */ const char *dname = smp_load_acquire(&name->name); /* ^^^ */
u32 dlen = READ_ONCE(name->len); u32 dlen = READ_ONCE(name->len);
char *p; char *p;
*buflen -= dlen + 1; *buflen -= dlen + 1;
if (*buflen < 0) if (unlikely(*buflen < 0))
return -ENAMETOOLONG; return false;
p = *buffer -= dlen + 1; p = *buffer -= dlen + 1;
*p++ = '/'; *p++ = '/';
while (dlen--) { while (dlen--) {
@ -51,7 +51,7 @@ static int prepend_name(char **buffer, int *buflen, const struct qstr *name)
break; break;
*p++ = c; *p++ = c;
} }
return 0; return true;
} }
/** /**
@ -127,7 +127,7 @@ restart:
} }
parent = dentry->d_parent; parent = dentry->d_parent;
prefetch(parent); prefetch(parent);
if (unlikely(prepend_name(&bptr, &blen, &dentry->d_name) < 0)) if (!prepend_name(&bptr, &blen, &dentry->d_name))
break; break;
dentry = parent; dentry = parent;
@ -305,7 +305,7 @@ restart:
const struct dentry *parent = dentry->d_parent; const struct dentry *parent = dentry->d_parent;
prefetch(parent); prefetch(parent);
if (unlikely(prepend_name(&end, &len, &dentry->d_name) < 0)) if (!prepend_name(&end, &len, &dentry->d_name))
break; break;
dentry = parent; dentry = parent;