[094/118] ext4: fix online resizing for ext3-compat file systems

Submitted by Luis Henriques on May 7, 2013, 1:39 p.m.


Message ID 1367933964-1564-95-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques May 7, 2013, 1:39 p.m. -stable review patch.  If anyone has any objections, please let me know.


From: Theodore Ts'o <tytso@mit.edu>

commit c5c72d814cf0f650010337c73638b25e6d14d2d4 upstream.

Commit fb0a387dcdc restricts block allocations for indirect-mapped
files to block groups less than s_blockfile_groups.  However, the
online resizing code wasn't setting s_blockfile_groups, so the newly
added block groups were not available for non-extent mapped files.

Reported-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
 fs/ext4/resize.c | 2 ++
 1 file changed, 2 insertions(+)

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diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index a2289bf..097a7b0 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1255,6 +1255,8 @@  static void ext4_update_super(struct super_block *sb,
 	/* Update the global fs size fields */
 	sbi->s_groups_count += flex_gd->count;
+	sbi->s_blockfile_groups = min_t(ext4_group_t, sbi->s_groups_count,
 	/* Update the reserved block counts only once the new group is
 	 * active. */