directly use kmalloc() and kfree() in init/initramfs.c

Instead of using the malloc() and free() wrappers needed by the
lib/inflate.c code for allocations, simply use kmalloc() and kfree() in the
initramfs code.  This is needed for a further lib/inflate.c-related cleanup
patch that will remove the malloc() and free() functions.

Take that opportunity to remove the useless kmalloc() return value
cast.

Based on work done by Matt Mackall.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/init/initramfs.c b/init/initramfs.c
index d53fee8..8eeeccb 100644 (file)
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -57,7 +57,7 @@ static char __init *find_link(int major, int minor, int ino,
                        continue;
                return (*p)->name;
        }
-       q = (struct hash *)malloc(sizeof(struct hash));
+       q = kmalloc(sizeof(struct hash), GFP_KERNEL);
        if (!q)
                panic("can't allocate link hash entry");
        q->major = major;
@@ -77,7 +77,7 @@ static void __init free_hash(void)
                while (*p) {
                        q = *p;
                        *p = q->next;
-                       free(q);
+                       kfree(q);
                }
        }
 }
@@ -445,10 +445,10 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
 {
        int written;
        dry_run = check_only;
-       header_buf = malloc(110);
-       symlink_buf = malloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1);
-       name_buf = malloc(N_ALIGN(PATH_MAX));
-       window = malloc(WSIZE);
+       header_buf = kmalloc(110, GFP_KERNEL);
+       symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
+       name_buf = kmalloc(N_ALIGN(PATH_MAX), GFP_KERNEL);
+       window = kmalloc(WSIZE, GFP_KERNEL);
        if (!window || !header_buf || !symlink_buf || !name_buf)
                panic("can't allocate buffers");
        state = Start;
@@ -484,10 +484,10 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
                buf += inptr;
                len -= inptr;
        }
-       free(window);
-       free(name_buf);
-       free(symlink_buf);
-       free(header_buf);
+       kfree(window);
+       kfree(name_buf);
+       kfree(symlink_buf);
+       kfree(header_buf);
        return message;
 }