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authorTheodore Ts'o <tytso@mit.edu>2011-09-09 18:36:51 -0400
committerTheodore Ts'o <tytso@mit.edu>2011-09-09 18:36:51 -0400
commitbab08ab9646288f1b0b72a7aaeecdff94bd62c18 (patch)
treee301377f1ce9093a44b2cfb331439e15d79789ed /fs/ext4/indirect.c
parent281b59959707dfae03ce038cdf231bf4904e170c (diff)
downloadop-kernel-dev-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.zip
op-kernel-dev-bab08ab9646288f1b0b72a7aaeecdff94bd62c18.tar.gz
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.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index ea704df..3cfc73f 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 */
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