/*
- * linux/fs/ext3/ialloc.c
+ * linux/fs/ext4/ialloc.c
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
#include <linux/time.h>
#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
+#include <linux/jbd2.h>
+#include <linux/ext4_fs.h>
+#include <linux/ext4_jbd2.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/random.h>
#include <linux/bitops.h>
-
+#include <linux/blkdev.h>
#include <asm/byteorder.h>
#include "xattr.h"
#include "acl.h"
+#include "group.h"
/*
* ialloc.c contains the inodes allocation and deallocation routines
* the free blocks count in the block.
*/
+/*
+ * To avoid calling the atomic setbit hundreds or thousands of times, we only
+ * need to use it within a single byte (to ensure we get endianness right).
+ * We can use memset for the rest of the bitmap as there are no other users.
+ */
+void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
+{
+ int i;
+
+ if (start_bit >= end_bit)
+ return;
+
+ ext4_debug("mark end bits +%d through +%d used\n", start_bit, end_bit);
+ for (i = start_bit; i < ((start_bit + 7) & ~7UL); i++)
+ ext4_set_bit(i, bitmap);
+ if (i < end_bit)
+ memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
+}
+
+/* Initializes an uninitialized inode bitmap */
+unsigned ext4_init_inode_bitmap(struct super_block *sb,
+ struct buffer_head *bh, int block_group,
+ struct ext4_group_desc *gdp)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ J_ASSERT_BH(bh, buffer_locked(bh));
+
+ /* If checksum is bad mark all blocks and inodes use to prevent
+ * allocation, essentially implementing a per-group read-only flag. */
+ if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
+ ext4_error(sb, __FUNCTION__, "Checksum bad for group %u\n",
+ block_group);
+ gdp->bg_free_blocks_count = 0;
+ gdp->bg_free_inodes_count = 0;
+ gdp->bg_itable_unused = 0;
+ memset(bh->b_data, 0xff, sb->s_blocksize);
+ return 0;
+ }
+
+ memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
+ mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), EXT4_BLOCKS_PER_GROUP(sb),
+ bh->b_data);
+
+ return EXT4_INODES_PER_GROUP(sb);
+}
/*
* Read the inode allocation bitmap for a given block_group, reading
static struct buffer_head *
read_inode_bitmap(struct super_block * sb, unsigned long block_group)
{
- struct ext3_group_desc *desc;
+ struct ext4_group_desc *desc;
struct buffer_head *bh = NULL;
- desc = ext3_get_group_desc(sb, block_group, NULL);
+ desc = ext4_get_group_desc(sb, block_group, NULL);
if (!desc)
goto error_out;
-
- bh = sb_bread(sb, le32_to_cpu(desc->bg_inode_bitmap));
+ if (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
+ bh = sb_getblk(sb, ext4_inode_bitmap(sb, desc));
+ if (!buffer_uptodate(bh)) {
+ lock_buffer(bh);
+ if (!buffer_uptodate(bh)) {
+ ext4_init_inode_bitmap(sb, bh, block_group,
+ desc);
+ set_buffer_uptodate(bh);
+ }
+ unlock_buffer(bh);
+ }
+ } else {
+ bh = sb_bread(sb, ext4_inode_bitmap(sb, desc));
+ }
if (!bh)
- ext3_error(sb, "read_inode_bitmap",
+ ext4_error(sb, "read_inode_bitmap",
"Cannot read inode bitmap - "
- "block_group = %lu, inode_bitmap = %u",
- block_group, le32_to_cpu(desc->bg_inode_bitmap));
+ "block_group = %lu, inode_bitmap = %llu",
+ block_group, ext4_inode_bitmap(sb, desc));
error_out:
return bh;
}
* though), and then we'd have two inodes sharing the
* same inode number and space on the harddisk.
*/
-void ext3_free_inode (handle_t *handle, struct inode * inode)
+void ext4_free_inode (handle_t *handle, struct inode * inode)
{
struct super_block * sb = inode->i_sb;
int is_directory;
struct buffer_head *bh2;
unsigned long block_group;
unsigned long bit;
- struct ext3_group_desc * gdp;
- struct ext3_super_block * es;
- struct ext3_sb_info *sbi;
+ struct ext4_group_desc * gdp;
+ struct ext4_super_block * es;
+ struct ext4_sb_info *sbi;
int fatal = 0, err;
if (atomic_read(&inode->i_count) > 1) {
- printk ("ext3_free_inode: inode has count=%d\n",
+ printk ("ext4_free_inode: inode has count=%d\n",
atomic_read(&inode->i_count));
return;
}
if (inode->i_nlink) {
- printk ("ext3_free_inode: inode has nlink=%d\n",
+ printk ("ext4_free_inode: inode has nlink=%d\n",
inode->i_nlink);
return;
}
if (!sb) {
- printk("ext3_free_inode: inode on nonexistent device\n");
+ printk("ext4_free_inode: inode on nonexistent device\n");
return;
}
- sbi = EXT3_SB(sb);
+ sbi = EXT4_SB(sb);
ino = inode->i_ino;
- ext3_debug ("freeing inode %lu\n", ino);
+ ext4_debug ("freeing inode %lu\n", ino);
/*
* Note: we must free any quota before locking the superblock,
* as writing the quota to disk may need the lock as well.
*/
DQUOT_INIT(inode);
- ext3_xattr_delete_inode(handle, inode);
+ ext4_xattr_delete_inode(handle, inode);
DQUOT_FREE_INODE(inode);
DQUOT_DROP(inode);
/* Do this BEFORE marking the inode not in use or returning an error */
clear_inode (inode);
- es = EXT3_SB(sb)->s_es;
- if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
- ext3_error (sb, "ext3_free_inode",
+ es = EXT4_SB(sb)->s_es;
+ if (ino < EXT4_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
+ ext4_error (sb, "ext4_free_inode",
"reserved or nonexistent inode %lu", ino);
goto error_return;
}
- block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
- bit = (ino - 1) % EXT3_INODES_PER_GROUP(sb);
+ block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
+ bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);
bitmap_bh = read_inode_bitmap(sb, block_group);
if (!bitmap_bh)
goto error_return;
BUFFER_TRACE(bitmap_bh, "get_write_access");
- fatal = ext3_journal_get_write_access(handle, bitmap_bh);
+ fatal = ext4_journal_get_write_access(handle, bitmap_bh);
if (fatal)
goto error_return;
/* Ok, now we can actually update the inode bitmaps.. */
- if (!ext3_clear_bit_atomic(sb_bgl_lock(sbi, block_group),
+ if (!ext4_clear_bit_atomic(sb_bgl_lock(sbi, block_group),
bit, bitmap_bh->b_data))
- ext3_error (sb, "ext3_free_inode",
+ ext4_error (sb, "ext4_free_inode",
"bit already cleared for inode %lu", ino);
else {
- gdp = ext3_get_group_desc (sb, block_group, &bh2);
+ gdp = ext4_get_group_desc (sb, block_group, &bh2);
BUFFER_TRACE(bh2, "get_write_access");
- fatal = ext3_journal_get_write_access(handle, bh2);
+ fatal = ext4_journal_get_write_access(handle, bh2);
if (fatal) goto error_return;
if (gdp) {
if (is_directory)
gdp->bg_used_dirs_count = cpu_to_le16(
le16_to_cpu(gdp->bg_used_dirs_count) - 1);
+ gdp->bg_checksum = ext4_group_desc_csum(sbi,
+ block_group, gdp);
spin_unlock(sb_bgl_lock(sbi, block_group));
percpu_counter_inc(&sbi->s_freeinodes_counter);
if (is_directory)
percpu_counter_dec(&sbi->s_dirs_counter);
}
- BUFFER_TRACE(bh2, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, bh2);
+ BUFFER_TRACE(bh2, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, bh2);
if (!fatal) fatal = err;
}
- BUFFER_TRACE(bitmap_bh, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, bitmap_bh);
+ BUFFER_TRACE(bitmap_bh, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, bitmap_bh);
if (!fatal)
fatal = err;
sb->s_dirt = 1;
error_return:
brelse(bitmap_bh);
- ext3_std_error(sb, fatal);
+ ext4_std_error(sb, fatal);
}
/*
*/
static int find_group_dir(struct super_block *sb, struct inode *parent)
{
- int ngroups = EXT3_SB(sb)->s_groups_count;
+ int ngroups = EXT4_SB(sb)->s_groups_count;
unsigned int freei, avefreei;
- struct ext3_group_desc *desc, *best_desc = NULL;
- struct buffer_head *bh;
+ struct ext4_group_desc *desc, *best_desc = NULL;
int group, best_group = -1;
- freei = percpu_counter_read_positive(&EXT3_SB(sb)->s_freeinodes_counter);
+ freei = percpu_counter_read_positive(&EXT4_SB(sb)->s_freeinodes_counter);
avefreei = freei / ngroups;
for (group = 0; group < ngroups; group++) {
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (!desc || !desc->bg_free_inodes_count)
continue;
if (le16_to_cpu(desc->bg_free_inodes_count) < avefreei)
static int find_group_orlov(struct super_block *sb, struct inode *parent)
{
- int parent_group = EXT3_I(parent)->i_block_group;
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- struct ext3_super_block *es = sbi->s_es;
+ int parent_group = EXT4_I(parent)->i_block_group;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
int ngroups = sbi->s_groups_count;
- int inodes_per_group = EXT3_INODES_PER_GROUP(sb);
+ int inodes_per_group = EXT4_INODES_PER_GROUP(sb);
unsigned int freei, avefreei;
- ext3_fsblk_t freeb, avefreeb;
- ext3_fsblk_t blocks_per_dir;
+ ext4_fsblk_t freeb, avefreeb;
+ ext4_fsblk_t blocks_per_dir;
unsigned int ndirs;
int max_debt, max_dirs, min_inodes;
- ext3_grpblk_t min_blocks;
+ ext4_grpblk_t min_blocks;
int group = -1, i;
- struct ext3_group_desc *desc;
- struct buffer_head *bh;
+ struct ext4_group_desc *desc;
freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter);
avefreei = freei / ngroups;
freeb = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
- avefreeb = freeb / ngroups;
+ avefreeb = freeb;
+ do_div(avefreeb, ngroups);
ndirs = percpu_counter_read_positive(&sbi->s_dirs_counter);
if ((parent == sb->s_root->d_inode) ||
- (EXT3_I(parent)->i_flags & EXT3_TOPDIR_FL)) {
+ (EXT4_I(parent)->i_flags & EXT4_TOPDIR_FL)) {
int best_ndir = inodes_per_group;
int best_group = -1;
parent_group = (unsigned)group % ngroups;
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (!desc || !desc->bg_free_inodes_count)
continue;
if (le16_to_cpu(desc->bg_used_dirs_count) >= best_ndir)
goto fallback;
}
- blocks_per_dir = (le32_to_cpu(es->s_blocks_count) - freeb) / ndirs;
+ blocks_per_dir = ext4_blocks_count(es) - freeb;
+ do_div(blocks_per_dir, ndirs);
max_dirs = ndirs / ngroups + inodes_per_group / 16;
min_inodes = avefreei - inodes_per_group / 4;
- min_blocks = avefreeb - EXT3_BLOCKS_PER_GROUP(sb) / 4;
+ min_blocks = avefreeb - EXT4_BLOCKS_PER_GROUP(sb) / 4;
- max_debt = EXT3_BLOCKS_PER_GROUP(sb) / max(blocks_per_dir, (ext3_fsblk_t)BLOCK_COST);
+ max_debt = EXT4_BLOCKS_PER_GROUP(sb);
+ max_debt /= max_t(int, blocks_per_dir, BLOCK_COST);
if (max_debt * INODE_COST > inodes_per_group)
max_debt = inodes_per_group / INODE_COST;
if (max_debt > 255)
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (!desc || !desc->bg_free_inodes_count)
continue;
if (le16_to_cpu(desc->bg_used_dirs_count) >= max_dirs)
fallback:
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (!desc || !desc->bg_free_inodes_count)
continue;
if (le16_to_cpu(desc->bg_free_inodes_count) >= avefreei)
static int find_group_other(struct super_block *sb, struct inode *parent)
{
- int parent_group = EXT3_I(parent)->i_block_group;
- int ngroups = EXT3_SB(sb)->s_groups_count;
- struct ext3_group_desc *desc;
- struct buffer_head *bh;
+ int parent_group = EXT4_I(parent)->i_block_group;
+ int ngroups = EXT4_SB(sb)->s_groups_count;
+ struct ext4_group_desc *desc;
int group, i;
/*
* Try to place the inode in its parent directory
*/
group = parent_group;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (desc && le16_to_cpu(desc->bg_free_inodes_count) &&
le16_to_cpu(desc->bg_free_blocks_count))
return group;
group += i;
if (group >= ngroups)
group -= ngroups;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (desc && le16_to_cpu(desc->bg_free_inodes_count) &&
le16_to_cpu(desc->bg_free_blocks_count))
return group;
for (i = 0; i < ngroups; i++) {
if (++group >= ngroups)
group = 0;
- desc = ext3_get_group_desc (sb, group, &bh);
+ desc = ext4_get_group_desc (sb, group, NULL);
if (desc && le16_to_cpu(desc->bg_free_inodes_count))
return group;
}
* For other inodes, search forward from the parent directory's block
* group to find a free inode.
*/
-struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode)
+struct inode *ext4_new_inode(handle_t *handle, struct inode * dir, int mode)
{
struct super_block *sb;
struct buffer_head *bitmap_bh = NULL;
int group;
unsigned long ino = 0;
struct inode * inode;
- struct ext3_group_desc * gdp = NULL;
- struct ext3_super_block * es;
- struct ext3_inode_info *ei;
- struct ext3_sb_info *sbi;
+ struct ext4_group_desc * gdp = NULL;
+ struct ext4_super_block * es;
+ struct ext4_inode_info *ei;
+ struct ext4_sb_info *sbi;
int err = 0;
struct inode *ret;
- int i;
+ int i, free = 0;
/* Cannot create files in a deleted directory */
if (!dir || !dir->i_nlink)
inode = new_inode(sb);
if (!inode)
return ERR_PTR(-ENOMEM);
- ei = EXT3_I(inode);
+ ei = EXT4_I(inode);
- sbi = EXT3_SB(sb);
+ sbi = EXT4_SB(sb);
es = sbi->s_es;
if (S_ISDIR(mode)) {
if (test_opt (sb, OLDALLOC))
for (i = 0; i < sbi->s_groups_count; i++) {
err = -EIO;
- gdp = ext3_get_group_desc(sb, group, &bh2);
+ gdp = ext4_get_group_desc(sb, group, &bh2);
if (!gdp)
goto fail;
ino = 0;
repeat_in_this_group:
- ino = ext3_find_next_zero_bit((unsigned long *)
- bitmap_bh->b_data, EXT3_INODES_PER_GROUP(sb), ino);
- if (ino < EXT3_INODES_PER_GROUP(sb)) {
+ ino = ext4_find_next_zero_bit((unsigned long *)
+ bitmap_bh->b_data, EXT4_INODES_PER_GROUP(sb), ino);
+ if (ino < EXT4_INODES_PER_GROUP(sb)) {
BUFFER_TRACE(bitmap_bh, "get_write_access");
- err = ext3_journal_get_write_access(handle, bitmap_bh);
+ err = ext4_journal_get_write_access(handle, bitmap_bh);
if (err)
goto fail;
- if (!ext3_set_bit_atomic(sb_bgl_lock(sbi, group),
+ if (!ext4_set_bit_atomic(sb_bgl_lock(sbi, group),
ino, bitmap_bh->b_data)) {
/* we won it */
BUFFER_TRACE(bitmap_bh,
- "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle,
+ "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle,
bitmap_bh);
if (err)
goto fail;
goto got;
}
/* we lost it */
- journal_release_buffer(handle, bitmap_bh);
+ jbd2_journal_release_buffer(handle, bitmap_bh);
- if (++ino < EXT3_INODES_PER_GROUP(sb))
+ if (++ino < EXT4_INODES_PER_GROUP(sb))
goto repeat_in_this_group;
}
goto out;
got:
- ino += group * EXT3_INODES_PER_GROUP(sb) + 1;
- if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
- ext3_error (sb, "ext3_new_inode",
- "reserved inode or inode > inodes count - "
- "block_group = %d, inode=%lu", group, ino);
+ ino++;
+ if ((group == 0 && ino < EXT4_FIRST_INO(sb)) ||
+ ino > EXT4_INODES_PER_GROUP(sb)) {
+ ext4_error(sb, __FUNCTION__,
+ "reserved inode or inode > inodes count - "
+ "block_group = %d, inode=%lu", group,
+ ino + group * EXT4_INODES_PER_GROUP(sb));
err = -EIO;
goto fail;
}
BUFFER_TRACE(bh2, "get_write_access");
- err = ext3_journal_get_write_access(handle, bh2);
+ err = ext4_journal_get_write_access(handle, bh2);
if (err) goto fail;
+
+ /* We may have to initialize the block bitmap if it isn't already */
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ struct buffer_head *block_bh = read_block_bitmap(sb, group);
+
+ BUFFER_TRACE(block_bh, "get block bitmap access");
+ err = ext4_journal_get_write_access(handle, block_bh);
+ if (err) {
+ brelse(block_bh);
+ goto fail;
+ }
+
+ free = 0;
+ spin_lock(sb_bgl_lock(sbi, group));
+ /* recheck and clear flag under lock if we still need to */
+ if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
+ free = ext4_free_blocks_after_init(sb, group, gdp);
+ gdp->bg_free_blocks_count = cpu_to_le16(free);
+ }
+ spin_unlock(sb_bgl_lock(sbi, group));
+
+ /* Don't need to dirty bitmap block if we didn't change it */
+ if (free) {
+ BUFFER_TRACE(block_bh, "dirty block bitmap");
+ err = ext4_journal_dirty_metadata(handle, block_bh);
+ }
+
+ brelse(block_bh);
+ if (err)
+ goto fail;
+ }
+
spin_lock(sb_bgl_lock(sbi, group));
+ /* If we didn't allocate from within the initialized part of the inode
+ * table then we need to initialize up to this inode. */
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
+ gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT);
+
+ /* When marking the block group with
+ * ~EXT4_BG_INODE_UNINIT we don't want to depend
+ * on the value of bg_itable_unsed even though
+ * mke2fs could have initialized the same for us.
+ * Instead we calculated the value below
+ */
+
+ free = 0;
+ } else {
+ free = EXT4_INODES_PER_GROUP(sb) -
+ le16_to_cpu(gdp->bg_itable_unused);
+ }
+
+ /*
+ * Check the relative inode number against the last used
+ * relative inode number in this group. if it is greater
+ * we need to update the bg_itable_unused count
+ *
+ */
+ if (ino > free)
+ gdp->bg_itable_unused =
+ cpu_to_le16(EXT4_INODES_PER_GROUP(sb) - ino);
+ }
+
gdp->bg_free_inodes_count =
cpu_to_le16(le16_to_cpu(gdp->bg_free_inodes_count) - 1);
if (S_ISDIR(mode)) {
gdp->bg_used_dirs_count =
cpu_to_le16(le16_to_cpu(gdp->bg_used_dirs_count) + 1);
}
+ gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp);
spin_unlock(sb_bgl_lock(sbi, group));
- BUFFER_TRACE(bh2, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, bh2);
+ BUFFER_TRACE(bh2, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, bh2);
if (err) goto fail;
percpu_counter_dec(&sbi->s_freeinodes_counter);
inode->i_gid = current->fsgid;
inode->i_mode = mode;
- inode->i_ino = ino;
+ inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb);
/* This is the optimal IO size (for stat), not the fs block size */
inode->i_blocks = 0;
- inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime =
+ ext4_current_time(inode);
memset(ei->i_data, 0, sizeof(ei->i_data));
ei->i_dir_start_lookup = 0;
ei->i_disksize = 0;
- ei->i_flags = EXT3_I(dir)->i_flags & ~EXT3_INDEX_FL;
+ ei->i_flags = EXT4_I(dir)->i_flags & ~EXT4_INDEX_FL;
if (S_ISLNK(mode))
- ei->i_flags &= ~(EXT3_IMMUTABLE_FL|EXT3_APPEND_FL);
+ ei->i_flags &= ~(EXT4_IMMUTABLE_FL|EXT4_APPEND_FL);
/* dirsync only applies to directories */
if (!S_ISDIR(mode))
- ei->i_flags &= ~EXT3_DIRSYNC_FL;
-#ifdef EXT3_FRAGMENTS
- ei->i_faddr = 0;
- ei->i_frag_no = 0;
- ei->i_frag_size = 0;
-#endif
+ ei->i_flags &= ~EXT4_DIRSYNC_FL;
ei->i_file_acl = 0;
ei->i_dir_acl = 0;
ei->i_dtime = 0;
ei->i_block_alloc_info = NULL;
ei->i_block_group = group;
- ext3_set_inode_flags(inode);
+ ext4_set_inode_flags(inode);
if (IS_DIRSYNC(inode))
handle->h_sync = 1;
insert_inode_hash(inode);
inode->i_generation = sbi->s_next_generation++;
spin_unlock(&sbi->s_next_gen_lock);
- ei->i_state = EXT3_STATE_NEW;
- ei->i_extra_isize =
- (EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE) ?
- sizeof(struct ext3_inode) - EXT3_GOOD_OLD_INODE_SIZE : 0;
+ ei->i_state = EXT4_STATE_NEW;
+
+ ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
ret = inode;
if(DQUOT_ALLOC_INODE(inode)) {
goto fail_drop;
}
- err = ext3_init_acl(handle, inode, dir);
+ err = ext4_init_acl(handle, inode, dir);
if (err)
goto fail_free_drop;
- err = ext3_init_security(handle,inode, dir);
+ err = ext4_init_security(handle,inode, dir);
if (err)
goto fail_free_drop;
- err = ext3_mark_inode_dirty(handle, inode);
+ err = ext4_mark_inode_dirty(handle, inode);
if (err) {
- ext3_std_error(sb, err);
+ ext4_std_error(sb, err);
goto fail_free_drop;
}
+ if (test_opt(sb, EXTENTS)) {
+ EXT4_I(inode)->i_flags |= EXT4_EXTENTS_FL;
+ ext4_ext_tree_init(handle, inode);
+ if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
+ if (err) goto fail;
+ EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS);
+ BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh);
+ }
+ }
- ext3_debug("allocating inode %lu\n", inode->i_ino);
+ ext4_debug("allocating inode %lu\n", inode->i_ino);
goto really_out;
fail:
- ext3_std_error(sb, err);
+ ext4_std_error(sb, err);
out:
iput(inode);
ret = ERR_PTR(err);
}
/* Verify that we are loading a valid orphan from disk */
-struct inode *ext3_orphan_get(struct super_block *sb, unsigned long ino)
+struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
{
- unsigned long max_ino = le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count);
+ unsigned long max_ino = le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count);
unsigned long block_group;
int bit;
struct buffer_head *bitmap_bh = NULL;
/* Error cases - e2fsck has already cleaned up for us */
if (ino > max_ino) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"bad orphan ino %lu! e2fsck was run?", ino);
goto out;
}
- block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
- bit = (ino - 1) % EXT3_INODES_PER_GROUP(sb);
+ block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
+ bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);
bitmap_bh = read_inode_bitmap(sb, block_group);
if (!bitmap_bh) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"inode bitmap error for orphan %lu", ino);
goto out;
}
* is a valid orphan (no e2fsck run on fs). Orphans also include
* inodes that were being truncated, so we can't check i_nlink==0.
*/
- if (!ext3_test_bit(bit, bitmap_bh->b_data) ||
+ if (!ext4_test_bit(bit, bitmap_bh->b_data) ||
!(inode = iget(sb, ino)) || is_bad_inode(inode) ||
NEXT_ORPHAN(inode) > max_ino) {
- ext3_warning(sb, __FUNCTION__,
+ ext4_warning(sb, __FUNCTION__,
"bad orphan inode %lu! e2fsck was run?", ino);
- printk(KERN_NOTICE "ext3_test_bit(bit=%d, block=%llu) = %d\n",
+ printk(KERN_NOTICE "ext4_test_bit(bit=%d, block=%llu) = %d\n",
bit, (unsigned long long)bitmap_bh->b_blocknr,
- ext3_test_bit(bit, bitmap_bh->b_data));
+ ext4_test_bit(bit, bitmap_bh->b_data));
printk(KERN_NOTICE "inode=%p\n", inode);
if (inode) {
printk(KERN_NOTICE "is_bad_inode(inode)=%d\n",
return inode;
}
-unsigned long ext3_count_free_inodes (struct super_block * sb)
+unsigned long ext4_count_free_inodes (struct super_block * sb)
{
unsigned long desc_count;
- struct ext3_group_desc *gdp;
+ struct ext4_group_desc *gdp;
int i;
-#ifdef EXT3FS_DEBUG
- struct ext3_super_block *es;
+#ifdef EXT4FS_DEBUG
+ struct ext4_super_block *es;
unsigned long bitmap_count, x;
struct buffer_head *bitmap_bh = NULL;
- es = EXT3_SB(sb)->s_es;
+ es = EXT4_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
gdp = NULL;
- for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
- gdp = ext3_get_group_desc (sb, i, NULL);
+ for (i = 0; i < EXT4_SB(sb)->s_groups_count; i++) {
+ gdp = ext4_get_group_desc (sb, i, NULL);
if (!gdp)
continue;
desc_count += le16_to_cpu(gdp->bg_free_inodes_count);
if (!bitmap_bh)
continue;
- x = ext3_count_free(bitmap_bh, EXT3_INODES_PER_GROUP(sb) / 8);
+ x = ext4_count_free(bitmap_bh, EXT4_INODES_PER_GROUP(sb) / 8);
printk("group %d: stored = %d, counted = %lu\n",
i, le16_to_cpu(gdp->bg_free_inodes_count), x);
bitmap_count += x;
}
brelse(bitmap_bh);
- printk("ext3_count_free_inodes: stored = %u, computed = %lu, %lu\n",
+ printk("ext4_count_free_inodes: stored = %u, computed = %lu, %lu\n",
le32_to_cpu(es->s_free_inodes_count), desc_count, bitmap_count);
return desc_count;
#else
desc_count = 0;
- for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
- gdp = ext3_get_group_desc (sb, i, NULL);
+ for (i = 0; i < EXT4_SB(sb)->s_groups_count; i++) {
+ gdp = ext4_get_group_desc (sb, i, NULL);
if (!gdp)
continue;
desc_count += le16_to_cpu(gdp->bg_free_inodes_count);
}
/* Called at mount-time, super-block is locked */
-unsigned long ext3_count_dirs (struct super_block * sb)
+unsigned long ext4_count_dirs (struct super_block * sb)
{
unsigned long count = 0;
int i;
- for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
- struct ext3_group_desc *gdp = ext3_get_group_desc (sb, i, NULL);
+ for (i = 0; i < EXT4_SB(sb)->s_groups_count; i++) {
+ struct ext4_group_desc *gdp = ext4_get_group_desc (sb, i, NULL);
if (!gdp)
continue;
count += le16_to_cpu(gdp->bg_used_dirs_count);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff