[PATCH V13 07/14] Btrfs: subpagesize-blocksize: Allow mounting filesystems where sectorsize != PAGE_SIZE
From: Chandan Rajendra <hidden>
Date: 2016-01-21 10:28:18
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
This patch allows mounting filesystems with blocksize smaller than the PAGE_SIZE. Signed-off-by: Chandan Rajendra <redacted> --- fs/btrfs/disk-io.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7690cb5..1819caa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c@@ -2877,12 +2877,6 @@ int open_ctree(struct super_block *sb, goto fail_sb_buffer; } - if (sectorsize != PAGE_SIZE) { - printk(KERN_ERR "BTRFS: incompatible sector size (%lu) " - "found on %s\n", (unsigned long)sectorsize, sb->s_id); - goto fail_sb_buffer; - } - mutex_lock(&fs_info->chunk_mutex); ret = btrfs_read_sys_array(tree_root); mutex_unlock(&fs_info->chunk_mutex);
@@ -4100,8 +4094,8 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info, btrfs_super_nodesize(sb)); ret = -EINVAL; } - if (btrfs_super_sectorsize(sb) < 4096) { - printk(KERN_ERR "BTRFS: sectorsize too small: %u < 4096\n", + if (btrfs_super_sectorsize(sb) < 2048) { + printk(KERN_ERR "BTRFS: sectorsize too small: %u < 2048\n", btrfs_super_sectorsize(sb)); ret = -EINVAL; }
--
2.1.0