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-rw-r--r--fs/ext4/ialloc.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 00beb4f9cc4..25d8c9781ad 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -252,7 +252,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
fatal = ext4_journal_get_write_access(handle, bh2);
}
ext4_lock_group(sb, block_group);
- cleared = ext4_clear_bit(bit, bitmap_bh->b_data);
+ cleared = ext4_test_and_clear_bit(bit, bitmap_bh->b_data);
if (fatal || !cleared) {
ext4_unlock_group(sb, block_group);
goto out;
@@ -351,14 +351,14 @@ static void get_orlov_stats(struct super_block *sb, ext4_group_t g,
*/
static int find_group_orlov(struct super_block *sb, struct inode *parent,
- ext4_group_t *group, int mode,
+ ext4_group_t *group, umode_t mode,
const struct qstr *qstr)
{
ext4_group_t parent_group = EXT4_I(parent)->i_block_group;
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_group_t real_ngroups = ext4_get_groups_count(sb);
int inodes_per_group = EXT4_INODES_PER_GROUP(sb);
- unsigned int freei, avefreei;
+ unsigned int freei, avefreei, grp_free;
ext4_fsblk_t freeb, avefreec;
unsigned int ndirs;
int max_dirs, min_inodes;
@@ -477,8 +477,8 @@ fallback_retry:
for (i = 0; i < ngroups; i++) {
grp = (parent_group + i) % ngroups;
desc = ext4_get_group_desc(sb, grp, NULL);
- if (desc && ext4_free_inodes_count(sb, desc) &&
- ext4_free_inodes_count(sb, desc) >= avefreei) {
+ grp_free = ext4_free_inodes_count(sb, desc);
+ if (desc && grp_free && grp_free >= avefreei) {
*group = grp;
return 0;
}
@@ -497,7 +497,7 @@ fallback_retry:
}
static int find_group_other(struct super_block *sb, struct inode *parent,
- ext4_group_t *group, int mode)
+ ext4_group_t *group, umode_t mode)
{
ext4_group_t parent_group = EXT4_I(parent)->i_block_group;
ext4_group_t i, last, ngroups = ext4_get_groups_count(sb);
@@ -602,7 +602,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
*/
static int ext4_claim_inode(struct super_block *sb,
struct buffer_head *inode_bitmap_bh,
- unsigned long ino, ext4_group_t group, int mode)
+ unsigned long ino, ext4_group_t group, umode_t mode)
{
int free = 0, retval = 0, count;
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -618,7 +618,7 @@ static int ext4_claim_inode(struct super_block *sb,
*/
down_read(&grp->alloc_sem);
ext4_lock_group(sb, group);
- if (ext4_set_bit(ino, inode_bitmap_bh->b_data)) {
+ if (ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data)) {
/* not a free inode */
retval = 1;
goto err_ret;
@@ -690,7 +690,7 @@ err_ret:
* For other inodes, search forward from the parent directory's block
* group to find a free inode.
*/
-struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode,
+struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, umode_t mode,
const struct qstr *qstr, __u32 goal, uid_t *owner)
{
struct super_block *sb;
@@ -885,8 +885,12 @@ got:
if (IS_DIRSYNC(inode))
ext4_handle_sync(handle);
if (insert_inode_locked(inode) < 0) {
- err = -EINVAL;
- goto fail_drop;
+ /*
+ * Likely a bitmap corruption causing inode to be allocated
+ * twice.
+ */
+ err = -EIO;
+ goto fail;
}
spin_lock(&sbi->s_next_gen_lock);
inode->i_generation = sbi->s_next_generation++;