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authorNeilBrown <neilb@suse.de>2012-03-18 21:46:41 -0400
committerNeilBrown <neilb@suse.de>2012-03-18 21:46:41 -0400
commit792a1d4bbf960000f066358f0a8c6e769c8c72bc (patch)
tree97e9a5c0854551c3fa80e88851ad3317af24ca13
parent5a6c824ebb7c9f8dbbc92ffd3528e6366cad1a54 (diff)
md/bitmap: remove unnecessary indirection when allocating.
These funcitons don't add anything useful except possibly the trace points, and I don't think they are worth the extra indirection. So remove them. Signed-off-by: NeilBrown <neilb@suse.de>
-rw-r--r--drivers/md/bitmap.c31
1 files changed, 3 insertions, 28 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index e12b515bd471..534e0077d21a 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -36,31 +36,6 @@ static inline char *bmname(struct bitmap *bitmap)
36} 36}
37 37
38/* 38/*
39 * just a placeholder - calls kmalloc for bitmap pages
40 */
41static unsigned char *bitmap_alloc_page(struct bitmap *bitmap)
42{
43 unsigned char *page;
44
45 page = kzalloc(PAGE_SIZE, GFP_NOIO);
46 if (!page)
47 printk("%s: bitmap_alloc_page FAILED\n", bmname(bitmap));
48 else
49 pr_debug("%s: bitmap_alloc_page: allocated page at %p\n",
50 bmname(bitmap), page);
51 return page;
52}
53
54/*
55 * for now just a placeholder -- just calls kfree for bitmap pages
56 */
57static void bitmap_free_page(struct bitmap *bitmap, unsigned char *page)
58{
59 pr_debug("%s: bitmap_free_page: free page %p\n", bmname(bitmap), page);
60 kfree(page);
61}
62
63/*
64 * check a page and, if necessary, allocate it (or hijack it if the alloc fails) 39 * check a page and, if necessary, allocate it (or hijack it if the alloc fails)
65 * 40 *
66 * 1) check to see if this page is allocated, if it's not then try to alloc 41 * 1) check to see if this page is allocated, if it's not then try to alloc
@@ -97,7 +72,7 @@ __acquires(bitmap->lock)
97 /* this page has not been allocated yet */ 72 /* this page has not been allocated yet */
98 73
99 spin_unlock_irq(&bitmap->lock); 74 spin_unlock_irq(&bitmap->lock);
100 mappage = bitmap_alloc_page(bitmap); 75 mappage = kzalloc(PAGE_SIZE, GFP_NOIO);
101 spin_lock_irq(&bitmap->lock); 76 spin_lock_irq(&bitmap->lock);
102 77
103 if (mappage == NULL) { 78 if (mappage == NULL) {
@@ -110,7 +85,7 @@ __acquires(bitmap->lock)
110 } else if (bitmap->bp[page].map || 85 } else if (bitmap->bp[page].map ||
111 bitmap->bp[page].hijacked) { 86 bitmap->bp[page].hijacked) {
112 /* somebody beat us to getting the page */ 87 /* somebody beat us to getting the page */
113 bitmap_free_page(bitmap, mappage); 88 kfree(mappage);
114 return 0; 89 return 0;
115 } else { 90 } else {
116 91
@@ -142,7 +117,7 @@ static void bitmap_checkfree(struct bitmap *bitmap, unsigned long page)
142 ptr = bitmap->bp[page].map; 117 ptr = bitmap->bp[page].map;
143 bitmap->bp[page].map = NULL; 118 bitmap->bp[page].map = NULL;
144 bitmap->missing_pages++; 119 bitmap->missing_pages++;
145 bitmap_free_page(bitmap, ptr); 120 kfree(ptr);
146 } 121 }
147} 122}
148 123