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authorNeilBrown <neilb@suse.de>2012-05-22 05:55:10 +0200
committerNeilBrown <neilb@suse.de>2012-05-22 05:55:10 +0200
commit1ec885cdd01a9ad867dbb9fd32a1bfcc0875c486 (patch)
tree232eaa1e1b7820ca8e97782666f7742f78bef175 /drivers/md/bitmap.h
parentmd/bitmap: change *_page_attr() to take a page number, not a page. (diff)
downloadlinux-1ec885cdd01a9ad867dbb9fd32a1bfcc0875c486.tar.xz
linux-1ec885cdd01a9ad867dbb9fd32a1bfcc0875c486.zip
md/bitmap: move some fields of 'struct bitmap' into a 'storage' substruct.
This new 'struct bitmap_storage' reflects the external storage of the bitmap. Having this clearly defined will make it easier to change the storage used while the array is active. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/bitmap.h')
-rw-r--r--drivers/md/bitmap.h17
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index 79e17983473a..162ab095b866 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -188,12 +188,17 @@ struct bitmap {
/* bitmap spinlock */
spinlock_t lock;
- struct file *file; /* backing disk file */
- struct page *sb_page; /* cached copy of the bitmap file superblock */
- struct page **filemap; /* list of cache pages for the file */
- unsigned long *filemap_attr; /* attributes associated w/ filemap pages */
- unsigned long file_pages; /* number of pages in the file */
- int last_page_size; /* bytes in the last page */
+ struct bitmap_storage {
+ struct file *file; /* backing disk file */
+ struct page *sb_page; /* cached copy of the bitmap
+ * file superblock */
+ struct page **filemap; /* list of cache pages for
+ * the file */
+ unsigned long *filemap_attr; /* attributes associated
+ * w/ filemap pages */
+ unsigned long file_pages; /* number of pages in the file*/
+ int last_page_size; /* bytes in the last page */
+ } storage;
unsigned long flags;