[FOR-STABLE 01/20] Update flex_bg free blocks and free inodes counters when resizing.
From: Theodore Ts'o <tytso@mit.edu>
Date: 2008-11-16 16:34:48
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
From: Frederic Bohe <redacted> This fixes a bug which prevented the newly created inodes after a resize from being used on filesystems with flex_bg. Signed-off-by: Frederic Bohe <redacted> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> (cherry picked from commit c62a11fd9555007b1caab83b5bcbb443a43e32bb) --- fs/ext4/resize.c | 9 +++++++++ fs/ext4/super.c | 7 +++++-- 2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index b3d3560..3922a8b 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c@@ -929,6 +929,15 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) percpu_counter_add(&sbi->s_freeinodes_counter, EXT4_INODES_PER_GROUP(sb)); + if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) { + ext4_group_t flex_group; + flex_group = ext4_flex_group(sbi, input->group); + sbi->s_flex_groups[flex_group].free_blocks += + input->free_blocks_count; + sbi->s_flex_groups[flex_group].free_inodes += + EXT4_INODES_PER_GROUP(sb); + } + ext4_journal_dirty_metadata(handle, sbi->s_sbh); sb->s_dirt = 1;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 566344b..062b7c5 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c@@ -1504,8 +1504,11 @@ static int ext4_fill_flex_info(struct super_block *sb) sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex; groups_per_flex = 1 << sbi->s_log_groups_per_flex; - flex_group_count = (sbi->s_groups_count + groups_per_flex - 1) / - groups_per_flex; + /* We allocate both existing and potentially added groups */ + flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) + + ((sbi->s_es->s_reserved_gdt_blocks +1 ) << + EXT4_DESC_PER_BLOCK_BITS(sb))) / + groups_per_flex; sbi->s_flex_groups = kzalloc(flex_group_count * sizeof(struct flex_groups), GFP_KERNEL); if (sbi->s_flex_groups == NULL) {
--
1.6.0.4.8.g36f27.dirty