Join flags DM_PARAMS_KMALLOC and DM_PARAMS_VMALLOC into just one flag
DM_PARAMS_ALLOC. We can determine if the block was allocated with kmalloc
or vmalloc with the function is_vmalloc_addr, so there is no need to have
separate flags for that.
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
drivers/md/dm-ioctl.c | 17 +++++++++--------
drivers/md/dm-stats.c | 20 ++++++++++----------
2 files changed, 19 insertions(+), 18 deletions(-)
Index: linux-4.1/drivers/md/dm-ioctl.c
===================================================================
--- linux-4.1.orig/drivers/md/dm-ioctl.c 2015-07-02 18:24:08.000000000 +0200
+++ linux-4.1/drivers/md/dm-ioctl.c 2015-07-02 18:52:52.000000000 +0200
@@ -1668,8 +1668,7 @@ static int check_version(unsigned int cm
return r;
}
-#define DM_PARAMS_KMALLOC 0x0001 /* Params alloced with kmalloc */
-#define DM_PARAMS_VMALLOC 0x0002 /* Params alloced with vmalloc */
+#define DM_PARAMS_ALLOC 0x0001 /* Params alloced with kmalloc or vmalloc */
#define DM_WIPE_BUFFER 0x0010 /* Wipe input buffer before returning from ioctl */
static void free_params(struct dm_ioctl *param, size_t param_size, int param_flags)
@@ -1677,10 +1676,12 @@ static void free_params(struct dm_ioctl
if (param_flags & DM_WIPE_BUFFER)
memset(param, 0, param_size);
- if (param_flags & DM_PARAMS_KMALLOC)
- kfree(param);
- if (param_flags & DM_PARAMS_VMALLOC)
- vfree(param);
+ if (param_flags & DM_PARAMS_ALLOC) {
+ if (is_vmalloc_addr(param))
+ vfree(param);
+ else
+ kfree(param);
+ }
}
static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kernel,
@@ -1715,7 +1716,7 @@ static int copy_params(struct dm_ioctl _
if (param_kernel->data_size <= KMALLOC_MAX_SIZE) {
dmi = kmalloc(param_kernel->data_size, GFP_NOIO | __GFP_NORETRY | __GFP_NOMEMALLOC | __GFP_NOWARN);
if (dmi)
- *param_flags |= DM_PARAMS_KMALLOC;
+ *param_flags |= DM_PARAMS_ALLOC;
}
if (!dmi) {
@@ -1724,7 +1725,7 @@ static int copy_params(struct dm_ioctl _
dmi = __vmalloc(param_kernel->data_size, GFP_NOIO | __GFP_REPEAT | __GFP_HIGH | __GFP_HIGHMEM, PAGE_KERNEL);
memalloc_noio_restore(noio_flag);
if (dmi)
- *param_flags |= DM_PARAMS_VMALLOC;
+ *param_flags |= DM_PARAMS_ALLOC;
}
if (!dmi) {
--
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