From bab08ab9646288f1b0b72a7aaeecdff94bd62c18 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Fri, 9 Sep 2011 18:36:51 -0400 Subject: ext4: enforce bigalloc restrictions (e.g., no online resizing, etc.) At least initially if the bigalloc feature is enabled, we will not support non-extent mapped inodes, online resizing, online defrag, or the FITRIM ioctl. This simplifies the initial implementation. Signed-off-by: "Theodore Ts'o" --- fs/ext4/indirect.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'fs/ext4/indirect.c') diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index ea704dff8669..3cfc73fbca8e 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -699,6 +699,13 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode, /* * Okay, we need to do block allocation. */ + if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, + EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { + EXT4_ERROR_INODE(inode, "Can't allocate blocks for " + "non-extent mapped inodes with bigalloc"); + return -ENOSPC; + } + goal = ext4_find_goal(inode, map->m_lblk, partial); /* the number of blocks need to allocate for [d,t]indirect blocks */ -- cgit v1.2.3