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authorChao Yu <yuchao0@huawei.com>2018-01-25 14:40:08 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2018-03-13 02:05:33 +0300
commit199bc3fef29cacf672e7e5cd49d296c1fdc1a891 (patch)
tree0a44af6c0911b048b57908ea1c4b40cf1e2d8fd3 /fs/f2fs
parentbf617f7a92edc6bb2909db2bfa4576f50b280ee5 (diff)
downloadlinux-199bc3fef29cacf672e7e5cd49d296c1fdc1a891.tar.xz
f2fs: support large nat bitmap
Previously, we will store all nat version bitmap in checkpoint pack block, so our total node entry number has a limitation which caused total node number can not exceed (3900 * 8) block * 455 node/block = 14196000. So that once user wants to create more nodes in large size image, it becomes a bottleneck, that's unreasonable. This patch detects the new layout of nat/sit version bitmap in image in order to enable supporting large nat bitmap. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/f2fs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 8b652e000326..3f4dafecd910 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1762,6 +1762,12 @@ static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
int offset;
+ if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
+ offset = (flag == SIT_BITMAP) ?
+ le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
+ return &ckpt->sit_nat_version_bitmap + offset;
+ }
+
if (__cp_payload(sbi) > 0) {
if (flag == NAT_BITMAP)
return &ckpt->sit_nat_version_bitmap;