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nfsd: remove private bin2hex implementation

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Calling sprintf in a loop is not very efficient, and in any case,
we already have an implementation of bin-to-hex conversion in lib/
which we might as well use.

Note that original code used to nul-terminate the destination while
bin2hex doesn't. That's why replace kmalloc() with kzalloc().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Andy Shevchenko 2019-10-11 19:02:58 +03:00 committed by J. Bruce Fields
parent 6e73e92b15
commit 12b4157b7d
1 changed files with 3 additions and 8 deletions
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11
fs/nfsd/nfs4recover.c
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@ -1850,19 +1850,14 @@ nfsd4_umh_cltrack_upcall(char *cmd, char *arg, char *env0, char *env1)
static char *
bin_to_hex_dup(const unsigned char *src, int srclen)
{
int i;
char *buf, *hex;
char *buf;
/* +1 for terminating NULL */
buf = kmalloc((srclen * 2) + 1, GFP_KERNEL);
buf = kzalloc((srclen * 2) + 1, GFP_KERNEL);
if (!buf)
return buf;
hex = buf;
for (i = 0; i < srclen; i++) {
sprintf(hex, "%2.2x", *src++);
hex += 2;
}
bin2hex(buf, src, srclen);
return buf;
}