__u32 free_blocks_count;
};
+ /* Indexes used to index group tables in ext4_new_group_data */
+ enum {
+ BLOCK_BITMAP = 0, /* block bitmap */
+ INODE_BITMAP, /* inode bitmap */
+ INODE_TABLE, /* inode tables */
+ GROUP_TABLE_COUNT,
+ };
+
/*
* Flags used by ext4_map_blocks()
*/
/* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12)
#define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent)
+ #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
#define test_opt2(sb, opt) (EXT4_SB(sb)->s_mount_opt2 & \
EXT4_MOUNT2_##opt)
- #define ext4_set_bit __test_and_set_bit_le
+ #define ext4_test_and_set_bit __test_and_set_bit_le
+ #define ext4_set_bit __set_bit_le
#define ext4_set_bit_atomic ext2_set_bit_atomic
- #define ext4_clear_bit __test_and_clear_bit_le
+ #define ext4_test_and_clear_bit __test_and_clear_bit_le
+ #define ext4_clear_bit __clear_bit_le
#define ext4_clear_bit_atomic ext2_clear_bit_atomic
#define ext4_test_bit test_bit_le
- #define ext4_find_first_zero_bit find_first_zero_bit_le
#define ext4_find_next_zero_bit find_next_zero_bit_le
#define ext4_find_next_bit find_next_bit_le
#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100
#define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200
+ #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
#define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
#define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */
#define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */
+ #define EXT4_FEATURE_INCOMPAT_INLINEDATA 0x2000 /* data in inode */
+ #define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
#define EXT2_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
extern unsigned ext4_free_clusters_after_init(struct super_block *sb,
ext4_group_t block_group,
struct ext4_group_desc *gdp);
- extern unsigned ext4_num_base_meta_clusters(struct super_block *sb,
- ext4_group_t block_group);
extern unsigned ext4_num_overhead_clusters(struct super_block *sb,
ext4_group_t block_group,
struct ext4_group_desc *gdp);
dx_hash_info *hinfo);
/* ialloc.c */
-extern struct inode *ext4_new_inode(handle_t *, struct inode *, int,
+extern struct inode *ext4_new_inode(handle_t *, struct inode *, umode_t,
const struct qstr *qstr, __u32 goal,
uid_t *owner);
extern void ext4_free_inode(handle_t *, struct inode *);
extern void ext4_set_aops(struct inode *inode);
extern int ext4_writepage_trans_blocks(struct inode *);
extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
- extern int ext4_block_truncate_page(handle_t *handle,
- struct address_space *mapping, loff_t from);
- extern int ext4_block_zero_page_range(handle_t *handle,
- struct address_space *mapping, loff_t from, loff_t length);
extern int ext4_discard_partial_page_buffers(handle_t *handle,
struct address_space *mapping, loff_t from,
loff_t length, int flags);
- extern int ext4_discard_partial_page_buffers_no_lock(handle_t *handle,
- struct inode *inode, struct page *page, loff_t from,
- loff_t length, int flags);
extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
extern qsize_t *ext4_get_reserved_space(struct inode *inode);
extern void ext4_da_update_reserve_space(struct inode *inode,
extern int ext4_group_extend(struct super_block *sb,
struct ext4_super_block *es,
ext4_fsblk_t n_blocks_count);
+ extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count);
/* super.c */
extern void *ext4_kvmalloc(size_t size, gfp_t flags);
* - smart tree reduction
*/
-#include <linux/module.h>
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/jbd2.h>
ext4_lblk_t i, pg_lblk;
pgoff_t index;
+ if (!test_opt(inode->i_sb, DELALLOC))
+ return 0;
+
/* reverse search wont work if fs block size is less than page size */
if (inode->i_blkbits < PAGE_CACHE_SHIFT)
search_hint_reverse = 0;
int err = 0;
ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio;
- ext_debug("ext4_ext_handle_uninitialized_extents: inode %lu, logical"
- "block %llu, max_blocks %u, flags %d, allocated %u",
+ ext_debug("ext4_ext_handle_uninitialized_extents: inode %lu, logical "
+ "block %llu, max_blocks %u, flags %x, allocated %u\n",
inode->i_ino, (unsigned long long)map->m_lblk, map->m_len,
flags, allocated);
ext4_ext_show_leaf(inode, path);
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_lblk_t c_offset = map->m_lblk & (sbi->s_cluster_ratio-1);
ext4_lblk_t ex_cluster_start, ex_cluster_end;
- ext4_lblk_t rr_cluster_start, rr_cluster_end;
+ ext4_lblk_t rr_cluster_start;
ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block);
ext4_fsblk_t ee_start = ext4_ext_pblock(ex);
unsigned short ee_len = ext4_ext_get_actual_len(ex);
/* The requested region passed into ext4_map_blocks() */
rr_cluster_start = EXT4_B2C(sbi, map->m_lblk);
- rr_cluster_end = EXT4_B2C(sbi, map->m_lblk + map->m_len - 1);
if ((rr_cluster_start == ex_cluster_end) ||
(rr_cluster_start == ex_cluster_start)) {
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;
*/
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;
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;
}
}
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);
*/
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);
*/
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;
* 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;
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++;
* Assorted race fixes, rewrite of ext4_get_block() by Al Viro, 2000
*/
-#include <linux/module.h>
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/jbd2.h>
static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate);
static int __ext4_journalled_writepage(struct page *page, unsigned int len);
static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh);
+ static int ext4_discard_partial_page_buffers_no_lock(handle_t *handle,
+ struct inode *inode, struct page *page, loff_t from,
+ loff_t length, int flags);
/*
* Test whether an inode is a fast symlink.
* a[0] = 'a';
* truncate(f, 4096);
* we have in the page first buffer_head mapped via page_mkwrite call back
- * but other bufer_heads would be unmapped but dirty(dirty done via the
+ * but other buffer_heads would be unmapped but dirty (dirty done via the
* do_wp_page). So writepage should write the first block. If we modify
* the mmap area beyond 1024 we will again get a page_fault and the
* page_mkwrite callback will do the block allocation and mark the
if (!io_end || !size)
goto out;
- ext_debug("ext4_end_io_dio(): io_end 0x%p"
+ ext_debug("ext4_end_io_dio(): io_end 0x%p "
"for inode %lu, iocb 0x%p, offset %llu, size %llu\n",
iocb->private, io_end->inode->i_ino, iocb, offset,
size);
*
* Returns zero on sucess or negative on failure.
*/
- int ext4_discard_partial_page_buffers_no_lock(handle_t *handle,
+ static int ext4_discard_partial_page_buffers_no_lock(handle_t *handle,
struct inode *inode, struct page *page, loff_t from,
loff_t length, int flags)
{
return err;
}
- /*
- * ext4_block_truncate_page() zeroes out a mapping from file offset `from'
- * up to the end of the block which corresponds to `from'.
- * This required during truncate. We need to physically zero the tail end
- * of that block so it doesn't yield old data if the file is later grown.
- */
- int ext4_block_truncate_page(handle_t *handle,
- struct address_space *mapping, loff_t from)
- {
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
- unsigned length;
- unsigned blocksize;
- struct inode *inode = mapping->host;
-
- blocksize = inode->i_sb->s_blocksize;
- length = blocksize - (offset & (blocksize - 1));
-
- return ext4_block_zero_page_range(handle, mapping, from, length);
- }
-
- /*
- * ext4_block_zero_page_range() zeros out a mapping of length 'length'
- * starting from file offset 'from'. The range to be zero'd must
- * be contained with in one block. If the specified range exceeds
- * the end of the block it will be shortened to end of the block
- * that cooresponds to 'from'
- */
- int ext4_block_zero_page_range(handle_t *handle,
- struct address_space *mapping, loff_t from, loff_t length)
- {
- ext4_fsblk_t index = from >> PAGE_CACHE_SHIFT;
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
- unsigned blocksize, max, pos;
- ext4_lblk_t iblock;
- struct inode *inode = mapping->host;
- struct buffer_head *bh;
- struct page *page;
- int err = 0;
-
- page = find_or_create_page(mapping, from >> PAGE_CACHE_SHIFT,
- mapping_gfp_mask(mapping) & ~__GFP_FS);
- if (!page)
- return -ENOMEM;
-
- blocksize = inode->i_sb->s_blocksize;
- max = blocksize - (offset & (blocksize - 1));
-
- /*
- * correct length if it does not fall between
- * 'from' and the end of the block
- */
- if (length > max || length < 0)
- length = max;
-
- iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
-
- if (!page_has_buffers(page))
- create_empty_buffers(page, blocksize, 0);
-
- /* Find the buffer that contains "offset" */
- bh = page_buffers(page);
- pos = blocksize;
- while (offset >= pos) {
- bh = bh->b_this_page;
- iblock++;
- pos += blocksize;
- }
-
- err = 0;
- if (buffer_freed(bh)) {
- BUFFER_TRACE(bh, "freed: skip");
- goto unlock;
- }
-
- if (!buffer_mapped(bh)) {
- BUFFER_TRACE(bh, "unmapped");
- ext4_get_block(inode, iblock, bh, 0);
- /* unmapped? It's a hole - nothing to do */
- if (!buffer_mapped(bh)) {
- BUFFER_TRACE(bh, "still unmapped");
- goto unlock;
- }
- }
-
- /* Ok, it's mapped. Make sure it's up-to-date */
- if (PageUptodate(page))
- set_buffer_uptodate(bh);
-
- if (!buffer_uptodate(bh)) {
- err = -EIO;
- ll_rw_block(READ, 1, &bh);
- wait_on_buffer(bh);
- /* Uhhuh. Read error. Complain and punt. */
- if (!buffer_uptodate(bh))
- goto unlock;
- }
-
- if (ext4_should_journal_data(inode)) {
- BUFFER_TRACE(bh, "get write access");
- err = ext4_journal_get_write_access(handle, bh);
- if (err)
- goto unlock;
- }
-
- zero_user(page, offset, length);
-
- BUFFER_TRACE(bh, "zeroed end of block");
-
- err = 0;
- if (ext4_should_journal_data(inode)) {
- err = ext4_handle_dirty_metadata(handle, inode, bh);
- } else
- mark_buffer_dirty(bh);
-
- unlock:
- unlock_page(page);
- page_cache_release(page);
- return err;
- }
-
int ext4_can_truncate(struct inode *inode)
{
if (S_ISREG(inode->i_mode))
* transaction, and VFS/VM ensures that ext4_truncate() cannot run
* simultaneously on behalf of the same inode.
*
- * As we work through the truncate and commmit bits of it to the journal there
+ * As we work through the truncate and commit bits of it to the journal there
* is one core, guiding principle: the file's tree must always be consistent on
* disk. We must be able to restart the truncate after a crash.
*
return 0;
if (is_journal_aborted(journal))
return -EROFS;
+ /* We have to allocate physical blocks for delalloc blocks
+ * before flushing journal. otherwise delalloc blocks can not
+ * be allocated any more. even more truncate on delalloc blocks
+ * could trigger BUG by flushing delalloc blocks in journal.
+ * There is no delalloc block in non-journal data mode.
+ */
+ if (val && test_opt(inode->i_sb, DELALLOC)) {
+ err = ext4_alloc_da_blocks(inode);
+ if (err < 0)
+ return err;
+ }
jbd2_journal_lock_updates(journal);
- jbd2_journal_flush(journal);
/*
* OK, there are no updates running now, and all cached data is
if (val)
ext4_set_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
- else
+ else {
+ jbd2_journal_flush(journal);
ext4_clear_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
+ }
ext4_set_aops(inode);
jbd2_journal_unlock_updates(journal);
#include "ext4_jbd2.h"
#include "ext4.h"
+ #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
+
long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = filp->f_dentry->d_inode;
if (get_user(flags, (int __user *) arg))
return -EFAULT;
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
return err;
err = ext4_ext_migrate(inode);
flags_out:
mutex_unlock(&inode->i_mutex);
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return err;
}
case EXT4_IOC_GETVERSION:
if (!inode_owner_or_capable(inode))
return -EPERM;
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
return err;
if (get_user(generation, (int __user *) arg)) {
goto setversion_out;
}
+ mutex_lock(&inode->i_mutex);
handle = ext4_journal_start(inode, 1);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
- goto setversion_out;
+ goto unlock_out;
}
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err == 0) {
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
}
ext4_journal_stop(handle);
+
+unlock_out:
+ mutex_unlock(&inode->i_mutex);
setversion_out:
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return err;
}
case EXT4_IOC_GROUP_EXTEND: {
if (err)
return err;
- if (get_user(n_blocks_count, (__u32 __user *)arg))
- return -EFAULT;
+ if (get_user(n_blocks_count, (__u32 __user *)arg)) {
+ err = -EFAULT;
+ goto group_extend_out;
+ }
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
ext4_msg(sb, KERN_ERR,
"Online resizing not supported with bigalloc");
- return -EOPNOTSUPP;
+ err = -EOPNOTSUPP;
+ goto group_extend_out;
}
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
- return err;
+ goto group_extend_out;
err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
if (EXT4_SB(sb)->s_journal) {
}
if (err == 0)
err = err2;
-
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
+ group_extend_out:
ext4_resize_end(sb);
-
return err;
}
return -EOPNOTSUPP;
}
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
goto mext_out;
err = ext4_move_extents(filp, donor_filp, me.orig_start,
me.donor_start, me.len, &me.moved_len);
- if (me.moved_len > 0)
- file_remove_suid(donor_filp);
+ mnt_drop_write_file(filp);
+ mnt_drop_write(filp->f_path.mnt);
if (copy_to_user((struct move_extent __user *)arg,
&me, sizeof(me)))
return err;
if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
- sizeof(input)))
- return -EFAULT;
+ sizeof(input))) {
+ err = -EFAULT;
+ goto group_add_out;
+ }
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
ext4_msg(sb, KERN_ERR,
"Online resizing not supported with bigalloc");
- return -EOPNOTSUPP;
+ err = -EOPNOTSUPP;
+ goto group_add_out;
}
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
- return err;
+ goto group_add_out;
err = ext4_group_add(sb, &input);
if (EXT4_SB(sb)->s_journal) {
}
if (err == 0)
err = err2;
-
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
+ group_add_out:
ext4_resize_end(sb);
-
return err;
}
if (!inode_owner_or_capable(inode))
return -EACCES;
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
return err;
/*
mutex_lock(&(inode->i_mutex));
err = ext4_ext_migrate(inode);
mutex_unlock(&(inode->i_mutex));
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return err;
}
if (!inode_owner_or_capable(inode))
return -EACCES;
- err = mnt_want_write(filp->f_path.mnt);
+ err = mnt_want_write_file(filp);
if (err)
return err;
err = ext4_alloc_da_blocks(inode);
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return err;
}
+ case EXT4_IOC_RESIZE_FS: {
+ ext4_fsblk_t n_blocks_count;
+ struct super_block *sb = inode->i_sb;
+ int err = 0, err2 = 0;
+
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ ext4_msg(sb, KERN_ERR,
+ "Online resizing not (yet) supported with bigalloc");
+ return -EOPNOTSUPP;
+ }
+
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb,
+ EXT4_FEATURE_INCOMPAT_META_BG)) {
+ ext4_msg(sb, KERN_ERR,
+ "Online resizing not (yet) supported with meta_bg");
+ return -EOPNOTSUPP;
+ }
+
+ if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
+ sizeof(__u64))) {
+ return -EFAULT;
+ }
+
+ if (n_blocks_count > MAX_32_NUM &&
+ !EXT4_HAS_INCOMPAT_FEATURE(sb,
+ EXT4_FEATURE_INCOMPAT_64BIT)) {
+ ext4_msg(sb, KERN_ERR,
+ "File system only supports 32-bit block numbers");
+ return -EOPNOTSUPP;
+ }
+
+ err = ext4_resize_begin(sb);
+ if (err)
+ return err;
+
+ err = mnt_want_write(filp->f_path.mnt);
+ if (err)
+ goto resizefs_out;
+
+ err = ext4_resize_fs(sb, n_blocks_count);
+ if (EXT4_SB(sb)->s_journal) {
+ jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
+ err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
+ jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+ }
+ if (err == 0)
+ err = err2;
+ mnt_drop_write(filp->f_path.mnt);
+ resizefs_out:
+ ext4_resize_end(sb);
+ return err;
+ }
+
case FITRIM:
{
struct request_queue *q = bdev_get_queue(sb->s_bdev);
}
case EXT4_IOC_MOVE_EXT:
case FITRIM:
+ case EXT4_IOC_RESIZE_FS:
break;
default:
return -ENOIOCTLCMD;
static void ext4_i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
- INIT_LIST_HEAD(&inode->i_dentry);
kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
}
* - it's set to a non-default value OR
* - if the per-sb default is different from the global default
*/
-static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
+static int ext4_show_options(struct seq_file *seq, struct dentry *root)
{
int def_errors;
unsigned long def_mount_opts;
- struct super_block *sb = vfs->mnt_sb;
+ struct super_block *sb = root->d_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
}
if (sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) {
seq_printf(seq, ",max_batch_time=%u",
- (unsigned) sbi->s_min_batch_time);
+ (unsigned) sbi->s_max_batch_time);
}
/*
struct ext4_group_desc *gdp = NULL;
ext4_group_t flex_group_count;
ext4_group_t flex_group;
- int groups_per_flex = 0;
+ unsigned int groups_per_flex = 0;
size_t size;
int i;
sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
- groups_per_flex = 1 << sbi->s_log_groups_per_flex;
-
- if (groups_per_flex < 2) {
+ if (sbi->s_log_groups_per_flex < 1 || sbi->s_log_groups_per_flex > 31) {
sbi->s_log_groups_per_flex = 0;
return 1;
}
+ groups_per_flex = 1 << sbi->s_log_groups_per_flex;
/* We allocate both existing and potentially added groups */
flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
}
mutex_unlock(&eli->li_list_mtx);
- if (freezing(current))
- refrigerator();
+ try_to_freeze();
cur = jiffies;
if ((time_after_eq(cur, next_wakeup)) ||
* of the filesystem.
*/
if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) {
- ext4_msg(sb, KERN_WARNING, "bad geometry: first data"
+ ext4_msg(sb, KERN_WARNING, "bad geometry: first data "
"block %u is beyond end of filesystem (%llu)",
le32_to_cpu(es->s_first_data_block),
ext4_blocks_count(es));
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
ext4_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck");
+ iput(root);
goto failed_mount4;
}
sb->s_root = d_alloc_root(root);
if (!sb->s_root) {
+ iput(root);
ext4_msg(sb, KERN_ERR, "get root dentry failed");
ret = -ENOMEM;
goto failed_mount4;
if (err) {
ext4_msg(sb, KERN_ERR, "failed to initialize system "
"zone (%d)", err);
- goto failed_mount4;
+ goto failed_mount4a;
}
ext4_ext_init(sb);
failed_mount7:
ext4_unregister_li_request(sb);
failed_mount6:
- ext4_ext_release(sb);
-failed_mount5:
ext4_mb_release(sb);
+failed_mount5:
+ ext4_ext_release(sb);
ext4_release_system_zone(sb);
-failed_mount4:
- iput(root);
+failed_mount4a:
+ dput(sb->s_root);
sb->s_root = NULL;
+failed_mount4:
ext4_msg(sb, KERN_ERR, "mount failed");
destroy_workqueue(EXT4_SB(sb)->dio_unwritten_wq);
failed_mount_wq:
return -EINVAL;
/* Quotafile not on the same filesystem? */
- if (path->mnt->mnt_sb != sb)
+ if (path->dentry->d_sb != sb)
return -EXDEV;
/* Journaling quota? */
if (EXT4_SB(sb)->s_qf_names[type]) {
* Handler for storing security labels as extended attributes.
*/
-#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/security.h>
name, value, size, flags);
}
- int ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
- void *fs_info)
+ static int
+ ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+ void *fs_info)
{
const struct xattr *xattr;
handle_t *handle = fs_info;
projects / profile / ivi / kernel-adaptation-intel-automotive.git / commitdiff