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authorJosef Bacik <jbacik@redhat.com>2008-08-19 22:13:41 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-08-19 22:13:41 -0400
commit37609fd5ae62db75026d9f53096a1fbc35e040d9 (patch)
treee9c021770b73fd407f2caaa38e3db74d4d76a564
parent88aa3cff4e9a38b953de9fbc54c96e619a2bb9f9 (diff)
ext4: don't try to resize if there are no reserved gdt blocks left
When trying to resize an ext4 fs and you run out of reserved gdt blocks, you get an error that doesn't actually tell you what went wrong, it just says that the gdb it picked is not correct, which is the case since you don't have any reserved gdt blocks left. This patch adds a check to make sure you have reserved gdt blocks to use, and if not prints out a more relevant error. Signed-off-by: Josef Bacik <jbacik@redhat.com> Cc: <linux-ext4@vger.kernel.org> Cc: Andreas Dilger <adilger@sun.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
-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 0a926516426..b3d35604ea1 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -773,7 +773,8 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
773 773
774 if (reserved_gdb || gdb_off == 0) { 774 if (reserved_gdb || gdb_off == 0) {
775 if (!EXT4_HAS_COMPAT_FEATURE(sb, 775 if (!EXT4_HAS_COMPAT_FEATURE(sb,
776 EXT4_FEATURE_COMPAT_RESIZE_INODE)){ 776 EXT4_FEATURE_COMPAT_RESIZE_INODE)
777 || !le16_to_cpu(es->s_reserved_gdt_blocks)) {
777 ext4_warning(sb, __func__, 778 ext4_warning(sb, __func__,
778 "No reserved GDT blocks, can't resize"); 779 "No reserved GDT blocks, can't resize");
779 return -EPERM; 780 return -EPERM;