From: "edison.jiang" <jiangzhipeng@xxxxxxxxxx>
Android-R /sdcard mount FUSE filesystem type,
use "dd" command to filli up /sdcard dir,
Android will not boot normal,
becase this system need at least 128M userspace.
Test: open adb port,
adb shell "dd if=dev/zero of=sdcard/ae bs=1024000 count=xxx"
Result: if not limit size,Android system can not boot normal.
Signed-off-by: edison.jiang <jiangzhipeng@xxxxxxxxxx>
---
fs/fuse/inode.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index b0e18b4..f4e54505 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -477,6 +477,21 @@ static void convert_fuse_statfs(struct kstatfs *stbuf, struct fuse_kstatfs *attr
stbuf->f_files = attr->files;
stbuf->f_ffree = attr->ffree;
stbuf->f_namelen = attr->namelen;
+#ifdef LIMIT_SDCARD_SIZE
+ u32 data_free_size_th = 128*1024*1024;
+
+ stbuf->f_blocks -= (u32)data_free_size_th/attr->bsize;
+
+ if (stbuf->f_bfree < ((u32)data_free_size_th/attr->bsize))
+ stbuf->f_bfree = 0;
+ else
+ stbuf->f_bfree -= (u32)data_free_size_th/attr->bsize;
+
+ if (stbuf->f_bavail < ((u32)data_free_size_th/attr->bsize))
+ stbuf->f_bavail = 0;
+ else
+ stbuf->f_bavail -= (u32)data_free_size_th/attr->bsize;
+#endif
/* fsid is left zero */
}
--
1.9.1
