Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix bb_prealloc_list corruption due to wrong group locking
ext4: fix bogus BUG_ONs in in mballoc code
ext4: Print the find_group_flex() warning only once
ext4: fix header check in ext4_ext_search_right() for deep extent trees.
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index e2eab19..e0aa4fe 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1122,7 +1122,8 @@
struct ext4_extent_idx *ix;
struct ext4_extent *ex;
ext4_fsblk_t block;
- int depth, ee_len;
+ int depth; /* Note, NOT eh_depth; depth from top of tree */
+ int ee_len;
BUG_ON(path == NULL);
depth = path->p_depth;
@@ -1179,7 +1180,8 @@
if (bh == NULL)
return -EIO;
eh = ext_block_hdr(bh);
- if (ext4_ext_check_header(inode, eh, depth)) {
+ /* subtract from p_depth to get proper eh_depth */
+ if (ext4_ext_check_header(inode, eh, path->p_depth - depth)) {
put_bh(bh);
return -EIO;
}
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 627f8c3..2d2b358 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -698,6 +698,7 @@
struct inode *ret;
ext4_group_t i;
int free = 0;
+ static int once = 1;
ext4_group_t flex_group;
/* Cannot create files in a deleted directory */
@@ -719,7 +720,8 @@
ret2 = find_group_flex(sb, dir, &group);
if (ret2 == -1) {
ret2 = find_group_other(sb, dir, &group);
- if (ret2 == 0 && printk_ratelimit())
+ if (ret2 == 0 && once)
+ once = 0;
printk(KERN_NOTICE "ext4: find_group_flex "
"failed, fallback succeeded dir %lu\n",
dir->i_ino);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4415bee..9f61e62 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1447,7 +1447,7 @@
struct ext4_free_extent *gex = &ac->ac_g_ex;
BUG_ON(ex->fe_len <= 0);
- BUG_ON(ex->fe_len >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
+ BUG_ON(ex->fe_len > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
BUG_ON(ex->fe_start >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
BUG_ON(ac->ac_status != AC_STATUS_CONTINUE);
@@ -3292,7 +3292,7 @@
}
BUG_ON(start + size <= ac->ac_o_ex.fe_logical &&
start > ac->ac_o_ex.fe_logical);
- BUG_ON(size <= 0 || size >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
+ BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
/* now prepare goal request */
@@ -3589,6 +3589,7 @@
struct super_block *sb, struct ext4_prealloc_space *pa)
{
ext4_group_t grp;
+ ext4_fsblk_t grp_blk;
if (!atomic_dec_and_test(&pa->pa_count) || pa->pa_free != 0)
return;
@@ -3603,8 +3604,12 @@
pa->pa_deleted = 1;
spin_unlock(&pa->pa_lock);
- /* -1 is to protect from crossing allocation group */
- ext4_get_group_no_and_offset(sb, pa->pa_pstart - 1, &grp, NULL);
+ grp_blk = pa->pa_pstart;
+ /* If linear, pa_pstart may be in the next group when pa is used up */
+ if (pa->pa_linear)
+ grp_blk--;
+
+ ext4_get_group_no_and_offset(sb, grp_blk, &grp, NULL);
/*
* possible race: