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coda: get rid of CODA_ALLOC()

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These days we have kvzalloc() so we can delete CODA_ALLOC().

I made a couple related changes in coda_psdev_write().  First, I added
some error handling to avoid a NULL dereference if the allocation
failed.  Second, I used kvmalloc() instead of kvzalloc() because we copy
over the memory on the next line so there is no need to zero it first.

Link: http://lkml.kernel.org/r/e56010c822e7a7cbaa8a238cf82ad31c67eaa800.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dan Carpenter
2019-07-16 16:28:38 -07:00
committed by Linus Torvalds
parent 5e7c31dfe7
commit 4dc48193d7
3 changed files with 7 additions and 13 deletions
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6
fs/coda/psdev.c
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@@ -123,7 +123,11 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
hdr.opcode, hdr.unique);
nbytes = size;
}
CODA_ALLOC(dcbuf, union outputArgs *, nbytes);
dcbuf = kvmalloc(nbytes, GFP_KERNEL);
if (!dcbuf) {
retval = -ENOMEM;
goto out;
}
if (copy_from_user(dcbuf, buf, nbytes)) {
CODA_FREE(dcbuf, nbytes);
retval = -EFAULT;