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.
Signed-off-by: Dan Carpenter <[email protected]>
---
fs/coda/coda_linux.h | 10 ----------
fs/coda/psdev.c | 6 +++++-
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 c5234c21b539..49d44a485c9a 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -124,7 +124,11 @@ 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 1175a1722411..203f029bcdc3 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;
--
2.17.1
On Thu, 14 Feb 2019, Dan Carpenter wrote:
> These days we have kvzalloc() so we can delete CODA_ALLOC().
Maybe it would be better to get rid fo CODA_FREE as well?
julia
>
> 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.
>
> Signed-off-by: Dan Carpenter <[email protected]>
> ---
> fs/coda/coda_linux.h | 10 ----------
> fs/coda/psdev.c | 6 +++++-
> 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 c5234c21b539..49d44a485c9a 100644
> --- a/fs/coda/psdev.c
> +++ b/fs/coda/psdev.c
> @@ -124,7 +124,11 @@ 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 1175a1722411..203f029bcdc3 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;
> --
> 2.17.1
>
>
On Thu, Feb 14, 2019 at 08:04:43AM +0100, Julia Lawall wrote:
>
>
> On Thu, 14 Feb 2019, Dan Carpenter wrote:
>
> > These days we have kvzalloc() so we can delete CODA_ALLOC().
>
> Maybe it would be better to get rid fo CODA_FREE as well?
I feel like that's a separate issue. The CODA_FREE() macro already
uses kvfree() so it doesn't bother me as much as the CODA_ALLOC() macro.
regards,
dan carpenter
On Thu, Feb 14, 2019 at 08:04:43AM +0100, Julia Lawall wrote:
>
>
> On Thu, 14 Feb 2019, Dan Carpenter wrote:
>
> > These days we have kvzalloc() so we can delete CODA_ALLOC().
>
> Maybe it would be better to get rid fo CODA_FREE as well?
>
Actually, you're right. CODA_FREE() is especially weird without a
CODA_ALLOC(). But let me send that as a second patch.
regards,
dan carpenter
The CODA_FREE() macro just calls kvfree(). We can call that directly
instead.
Signed-off-by: Dan Carpenter <[email protected]>
---
fs/coda/coda_linux.h | 2 --
fs/coda/psdev.c | 8 ++++----
fs/coda/upcall.c | 36 ++++++++++++++++++------------------
3 files changed, 22 insertions(+), 24 deletions(-)
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h
index 1ea9521e79d7..517a363245c9 100644
--- a/fs/coda/coda_linux.h
+++ b/fs/coda/coda_linux.h
@@ -63,8 +63,6 @@ unsigned short coda_flags_to_cflags(unsigned short);
void coda_sysctl_init(void);
void coda_sysctl_clean(void);
-#define CODA_FREE(ptr, size) kvfree((ptr))
-
/* inode to cnode access functions */
static inline struct coda_inode_info *ITOC(struct inode *inode)
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 49d44a485c9a..decfbfda6bc4 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -130,7 +130,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
goto out;
}
if (copy_from_user(dcbuf, buf, nbytes)) {
- CODA_FREE(dcbuf, nbytes);
+ kvfree(dcbuf);
retval = -EFAULT;
goto out;
}
@@ -138,7 +138,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
/* what downcall errors does Venus handle ? */
error = coda_downcall(vcp, hdr.opcode, dcbuf);
- CODA_FREE(dcbuf, nbytes);
+ kvfree(dcbuf);
if (error) {
pr_warn("%s: coda_downcall error: %d\n",
__func__, error);
@@ -261,7 +261,7 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf,
goto out;
}
- CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+ kvfree(req->uc_data);
kfree(req);
out:
mutex_unlock(&vcp->vc_mutex);
@@ -323,7 +323,7 @@ static int coda_psdev_release(struct inode * inode, struct file * file)
/* Async requests need to be freed here */
if (req->uc_flags & CODA_REQ_ASYNC) {
- CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+ kvfree(req->uc_data);
kfree(req);
continue;
}
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index 203f029bcdc3..9fa12118f1bc 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -85,7 +85,7 @@ int venus_rootfid(struct super_block *sb, struct CodaFid *fidp)
if (!error)
*fidp = outp->coda_root.VFid;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -104,7 +104,7 @@ int venus_getattr(struct super_block *sb, struct CodaFid *fid,
if (!error)
*attr = outp->coda_getattr.attr;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -123,7 +123,7 @@ int venus_setattr(struct super_block *sb, struct CodaFid *fid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -153,7 +153,7 @@ int venus_lookup(struct super_block *sb, struct CodaFid *fid,
*type = outp->coda_lookup.vtype;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -173,7 +173,7 @@ int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -194,7 +194,7 @@ int venus_open(struct super_block *sb, struct CodaFid *fid,
if (!error)
*fh = outp->coda_open_by_fd.fh;
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -224,7 +224,7 @@ int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
*newfid = outp->coda_mkdir.VFid;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -262,7 +262,7 @@ int venus_rename(struct super_block *sb, struct CodaFid *old_fid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -295,7 +295,7 @@ int venus_create(struct super_block *sb, struct CodaFid *dirfid,
*newfid = outp->coda_create.VFid;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -318,7 +318,7 @@ int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -340,7 +340,7 @@ int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -370,7 +370,7 @@ int venus_readlink(struct super_block *sb, struct CodaFid *fid,
*(buffer + retlen) = '\0';
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -398,7 +398,7 @@ int venus_link(struct super_block *sb, struct CodaFid *fid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -433,7 +433,7 @@ int venus_symlink(struct super_block *sb, struct CodaFid *fid,
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -449,7 +449,7 @@ int venus_fsync(struct super_block *sb, struct CodaFid *fid)
inp->coda_fsync.VFid = *fid;
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -467,7 +467,7 @@ int venus_access(struct super_block *sb, struct CodaFid *fid, int mask)
error = coda_upcall(coda_vcp(sb), insize, &outsize, inp);
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -543,7 +543,7 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
}
exit:
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
@@ -565,7 +565,7 @@ int venus_statfs(struct dentry *dentry, struct kstatfs *sfs)
sfs->f_ffree = outp->coda_statfs.stat.f_ffree;
}
- CODA_FREE(inp, insize);
+ kvfree(inp);
return error;
}
--
2.17.1
On Thu, Feb 14, 2019 at 11:38:22AM +0300, Dan Carpenter wrote:
> The CODA_FREE() macro just calls kvfree(). We can call that directly
> instead.
Added these to my (getting long) list of things that I really should get
upstreamed sometime soon now.
Jan