f2fs: use F2FS_BLKSIZE to judge bloksize and page_cache_size

In some system PAGE_CACHE_SIZE isn't 4K. So using F2FS_BLKSIZE to judge.

By Jaegeuk Kim:
 o f2fs does not support no other 4KB page cache size.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 0b18aee2ed25..1d7fe11fea30 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -384,14 +384,23 @@ static int sanity_check_raw_super(struct super_block *sb,
                 return 1;
         }
 
+        /* Currently, support only 4KB page cache size */
+        if (F2FS_BLKSIZE != PAGE_CACHE_SIZE) {
+                f2fs_msg(sb, KERN_INFO,
+                        "Invalid page_cache_size (%u), supports only 4KB\n",
+                        PAGE_CACHE_SIZE);
+                return 1;
+        }
+
         /* Currently, support only 4KB block size */
         blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
-        if (blocksize != PAGE_CACHE_SIZE) {
+        if (blocksize != F2FS_BLKSIZE) {
                 f2fs_msg(sb, KERN_INFO,
                         "Invalid blocksize (%u), supports only 4KB\n",
                         blocksize);
                 return 1;
         }
+
         if (le32_to_cpu(raw_super->log_sectorsize) !=
                                         F2FS_LOG_SECTOR_SIZE) {
                 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize");