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| author | Theodore Ts'o <tytso@mit.edu> | 2011-09-10 00:36:51 +0200 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-09-10 00:36:51 +0200 |
| commit | bab08ab9646288f1b0b72a7aaeecdff94bd62c18 (patch) | |
| tree | e301377f1ce9093a44b2cfb331439e15d79789ed /fs/ext4/indirect.c | |
| parent | ext4: read-only support for bigalloc file systems (diff) | |
| download | linux-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.tar.xz linux-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.zip | |
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" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/indirect.c')
| -rw-r--r-- | fs/ext4/indirect.c | 7 |
1 files changed, 7 insertions, 0 deletions
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 */ |