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authorJosef Bacik <jbacik@redhat.com>2008-06-06 18:05:52 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-06-06 18:05:52 -0400
commit944600930a37aa725ba6f93c3244e2d77a1e3581 (patch)
tree2582e2b72196d82ae8fef3b88cb7cc834a2198d0 /fs
parent0bf7e8379ce7e0159a2a6bd3d937f2f6ada79799 (diff)
downloadop-kernel-dev-944600930a37aa725ba6f93c3244e2d77a1e3581.zip
op-kernel-dev-944600930a37aa725ba6f93c3244e2d77a1e3581.tar.gz
ext4: fix online resize bug
There is a bug when we are trying to verify that the reserve inode's double indirect blocks point back to the primary gdt blocks. The fix is obvious, we need to mod the gdb count by the addr's per block. This was verified using the same testcase as with the ext3 equivalent of this patch. Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/resize.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 9f086a6..9ecb92f 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -563,7 +563,8 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
}
blk = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + EXT4_SB(sb)->s_gdb_count;
- data = (__le32 *)dind->b_data + EXT4_SB(sb)->s_gdb_count;
+ data = (__le32 *)dind->b_data + (EXT4_SB(sb)->s_gdb_count %
+ EXT4_ADDR_PER_BLOCK(sb));
end = (__le32 *)dind->b_data + EXT4_ADDR_PER_BLOCK(sb);
/* Get each reserved primary GDT block and verify it holds backups */
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