From a62db245265bd898feaab3f035c5b5f99bf4ea6c Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Thu, 26 Mar 2020 13:35:55 +0800 Subject: fs: btrfs: Reject fs with sector size other than PAGE_SIZE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Although in theory u-boot fs driver could easily support more sector sizes, current code base doesn't have good enough way to grab sector size yet. This would cause problem for later LZO fixes which rely on sector size. And considering that most u-boot boards are using 4K page size, which is also the most common sector size for btrfs, rejecting fs with non-page-sized sector size shouldn't cause much problem. This should only be a quick fix before we implement better sector size support. Signed-off-by: Qu Wenruo Cc: Marek Behun Reviewed-by: Marek Behún --- fs/btrfs/super.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 2dc4a6fcd7..b693a073fc 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -7,6 +7,7 @@ #include "btrfs.h" #include +#include #define BTRFS_SUPER_FLAG_SUPP (BTRFS_HEADER_FLAG_WRITTEN \ | BTRFS_HEADER_FLAG_RELOC \ @@ -232,6 +233,13 @@ int btrfs_read_superblock(void) return -1; } + if (sb->sectorsize != PAGE_SIZE) { + printf( + "%s: Unsupported sector size (%u), only supports %u as sector size\n", + __func__, sb->sectorsize, PAGE_SIZE); + return -1; + } + if (btrfs_info.sb.num_devices != 1) { printf("%s: Unsupported number of devices (%lli). This driver " "only supports filesystem on one device.\n", __func__, -- cgit