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author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-07-16 16:28:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-16 19:23:23 -0700 |
commit | 4dc48193d748f0f0fbe37105a905466ff3a6ad50 (patch) | |
tree | 7547b1eff27892eef20e113d72ac5a7b4032ea40 /fs/coda | |
parent | 5e7c31dfe74703f428220384b2863525957cc160 (diff) | |
download | lwn-4dc48193d748f0f0fbe37105a905466ff3a6ad50.tar.gz lwn-4dc48193d748f0f0fbe37105a905466ff3a6ad50.zip |
coda: get rid of CODA_ALLOC()
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>
Diffstat (limited to 'fs/coda')
-rw-r--r-- | fs/coda/coda_linux.h | 10 | ||||
-rw-r--r-- | fs/coda/psdev.c | 6 | ||||
-rw-r--r-- | fs/coda/upcall.c | 4 |
3 files changed, 7 insertions, 13 deletions
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h index 126155cadfa9..1ea9521e79d7 100644 --- a/fs/coda/coda_linux.h +++ b/fs/coda/coda_linux.h @@ -63,16 +63,6 @@ unsigned short coda_flags_to_cflags(unsigned short); void coda_sysctl_init(void); void coda_sysctl_clean(void); -#define CODA_ALLOC(ptr, cast, size) do { \ - if (size < PAGE_SIZE) \ - ptr = kzalloc((unsigned long) size, GFP_KERNEL); \ - else \ - ptr = (cast)vzalloc((unsigned long) size); \ - if (!ptr) \ - pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ -} while (0) - - #define CODA_FREE(ptr, size) kvfree((ptr)) /* inode to cnode access functions */ diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index ac130d469a3e..f74296acc59e 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -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; diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index cf1e662681a5..b6ac5fc98189 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -46,7 +46,7 @@ static void *alloc_upcall(int opcode, int size) { union inputArgs *inp; - CODA_ALLOC(inp, union inputArgs *, size); + inp = kvzalloc(size, GFP_KERNEL); if (!inp) return ERR_PTR(-ENOMEM); @@ -743,7 +743,7 @@ static int coda_upcall(struct venus_comm *vcp, sig_req = kmalloc(sizeof(struct upc_req), GFP_KERNEL); if (!sig_req) goto exit; - CODA_ALLOC((sig_req->uc_data), char *, sizeof(struct coda_in_hdr)); + sig_req->uc_data = kvzalloc(sizeof(struct coda_in_hdr), GFP_KERNEL); if (!sig_req->uc_data) { kfree(sig_req); goto exit; |