summaryrefslogtreecommitdiff
path: root/fs/ext4/migrate.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ext4/migrate.c')
-rw-r--r--fs/ext4/migrate.c111
1 files changed, 41 insertions, 70 deletions
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index b57b98fb44d1..16ac228dbec6 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -15,19 +15,18 @@
#include <linux/module.h>
#include <linux/slab.h>
#include "ext4_jbd2.h"
-#include "ext4_extents.h"
/*
* The contiguous blocks details which can be
* represented by a single extent
*/
-struct list_blocks_struct {
- ext4_lblk_t first_block, last_block;
+struct migrate_struct {
+ ext4_lblk_t first_block, last_block, curr_block;
ext4_fsblk_t first_pblock, last_pblock;
};
static int finish_range(handle_t *handle, struct inode *inode,
- struct list_blocks_struct *lb)
+ struct migrate_struct *lb)
{
int retval = 0, needed;
@@ -87,8 +86,7 @@ err_out:
}
static int update_extent_range(handle_t *handle, struct inode *inode,
- ext4_fsblk_t pblock, ext4_lblk_t blk_num,
- struct list_blocks_struct *lb)
+ ext4_fsblk_t pblock, struct migrate_struct *lb)
{
int retval;
/*
@@ -96,9 +94,10 @@ static int update_extent_range(handle_t *handle, struct inode *inode,
*/
if (lb->first_pblock &&
(lb->last_pblock+1 == pblock) &&
- (lb->last_block+1 == blk_num)) {
+ (lb->last_block+1 == lb->curr_block)) {
lb->last_pblock = pblock;
- lb->last_block = blk_num;
+ lb->last_block = lb->curr_block;
+ lb->curr_block++;
return 0;
}
/*
@@ -106,64 +105,49 @@ static int update_extent_range(handle_t *handle, struct inode *inode,
*/
retval = finish_range(handle, inode, lb);
lb->first_pblock = lb->last_pblock = pblock;
- lb->first_block = lb->last_block = blk_num;
-
+ lb->first_block = lb->last_block = lb->curr_block;
+ lb->curr_block++;
return retval;
}
static int update_ind_extent_range(handle_t *handle, struct inode *inode,
- ext4_fsblk_t pblock, ext4_lblk_t *blk_nump,
- struct list_blocks_struct *lb)
+ ext4_fsblk_t pblock,
+ struct migrate_struct *lb)
{
struct buffer_head *bh;
__le32 *i_data;
int i, retval = 0;
- ext4_lblk_t blk_count = *blk_nump;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- if (!pblock) {
- /* Only update the file block number */
- *blk_nump += max_entries;
- return 0;
- }
-
bh = sb_bread(inode->i_sb, pblock);
if (!bh)
return -EIO;
i_data = (__le32 *)bh->b_data;
- for (i = 0; i < max_entries; i++, blk_count++) {
+ for (i = 0; i < max_entries; i++) {
if (i_data[i]) {
retval = update_extent_range(handle, inode,
- le32_to_cpu(i_data[i]),
- blk_count, lb);
+ le32_to_cpu(i_data[i]), lb);
if (retval)
break;
+ } else {
+ lb->curr_block++;
}
}
-
- /* Update the file block number */
- *blk_nump = blk_count;
put_bh(bh);
return retval;
}
static int update_dind_extent_range(handle_t *handle, struct inode *inode,
- ext4_fsblk_t pblock, ext4_lblk_t *blk_nump,
- struct list_blocks_struct *lb)
+ ext4_fsblk_t pblock,
+ struct migrate_struct *lb)
{
struct buffer_head *bh;
__le32 *i_data;
int i, retval = 0;
- ext4_lblk_t blk_count = *blk_nump;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- if (!pblock) {
- /* Only update the file block number */
- *blk_nump += max_entries * max_entries;
- return 0;
- }
bh = sb_bread(inode->i_sb, pblock);
if (!bh)
return -EIO;
@@ -172,38 +156,28 @@ static int update_dind_extent_range(handle_t *handle, struct inode *inode,
for (i = 0; i < max_entries; i++) {
if (i_data[i]) {
retval = update_ind_extent_range(handle, inode,
- le32_to_cpu(i_data[i]),
- &blk_count, lb);
+ le32_to_cpu(i_data[i]), lb);
if (retval)
break;
} else {
/* Only update the file block number */
- blk_count += max_entries;
+ lb->curr_block += max_entries;
}
}
-
- /* Update the file block number */
- *blk_nump = blk_count;
put_bh(bh);
return retval;
}
static int update_tind_extent_range(handle_t *handle, struct inode *inode,
- ext4_fsblk_t pblock, ext4_lblk_t *blk_nump,
- struct list_blocks_struct *lb)
+ ext4_fsblk_t pblock,
+ struct migrate_struct *lb)
{
struct buffer_head *bh;
__le32 *i_data;
int i, retval = 0;
- ext4_lblk_t blk_count = *blk_nump;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- if (!pblock) {
- /* Only update the file block number */
- *blk_nump += max_entries * max_entries * max_entries;
- return 0;
- }
bh = sb_bread(inode->i_sb, pblock);
if (!bh)
return -EIO;
@@ -212,16 +186,14 @@ static int update_tind_extent_range(handle_t *handle, struct inode *inode,
for (i = 0; i < max_entries; i++) {
if (i_data[i]) {
retval = update_dind_extent_range(handle, inode,
- le32_to_cpu(i_data[i]),
- &blk_count, lb);
+ le32_to_cpu(i_data[i]), lb);
if (retval)
break;
- } else
+ } else {
/* Only update the file block number */
- blk_count += max_entries * max_entries;
+ lb->curr_block += max_entries * max_entries;
+ }
}
- /* Update the file block number */
- *blk_nump = blk_count;
put_bh(bh);
return retval;
@@ -462,12 +434,12 @@ int ext4_ext_migrate(struct inode *inode)
handle_t *handle;
int retval = 0, i;
__le32 *i_data;
- ext4_lblk_t blk_count = 0;
struct ext4_inode_info *ei;
struct inode *tmp_inode = NULL;
- struct list_blocks_struct lb;
+ struct migrate_struct lb;
unsigned long max_entries;
__u32 goal;
+ uid_t owner[2];
/*
* If the filesystem does not support extents, or the inode
@@ -495,10 +467,12 @@ int ext4_ext_migrate(struct inode *inode)
}
goal = (((inode->i_ino - 1) / EXT4_INODES_PER_GROUP(inode->i_sb)) *
EXT4_INODES_PER_GROUP(inode->i_sb)) + 1;
+ owner[0] = inode->i_uid;
+ owner[1] = inode->i_gid;
tmp_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,
- S_IFREG, NULL, goal);
+ S_IFREG, NULL, goal, owner);
if (IS_ERR(tmp_inode)) {
- retval = -ENOMEM;
+ retval = PTR_ERR(inode);
ext4_journal_stop(handle);
return retval;
}
@@ -507,7 +481,7 @@ int ext4_ext_migrate(struct inode *inode)
* Set the i_nlink to zero so it will be deleted later
* when we drop inode reference.
*/
- tmp_inode->i_nlink = 0;
+ clear_nlink(tmp_inode);
ext4_ext_tree_init(handle, tmp_inode);
ext4_orphan_add(handle, tmp_inode);
@@ -551,35 +525,32 @@ int ext4_ext_migrate(struct inode *inode)
/* 32 bit block address 4 bytes */
max_entries = inode->i_sb->s_blocksize >> 2;
- for (i = 0; i < EXT4_NDIR_BLOCKS; i++, blk_count++) {
+ for (i = 0; i < EXT4_NDIR_BLOCKS; i++) {
if (i_data[i]) {
retval = update_extent_range(handle, tmp_inode,
- le32_to_cpu(i_data[i]),
- blk_count, &lb);
+ le32_to_cpu(i_data[i]), &lb);
if (retval)
goto err_out;
- }
+ } else
+ lb.curr_block++;
}
if (i_data[EXT4_IND_BLOCK]) {
retval = update_ind_extent_range(handle, tmp_inode,
- le32_to_cpu(i_data[EXT4_IND_BLOCK]),
- &blk_count, &lb);
+ le32_to_cpu(i_data[EXT4_IND_BLOCK]), &lb);
if (retval)
goto err_out;
} else
- blk_count += max_entries;
+ lb.curr_block += max_entries;
if (i_data[EXT4_DIND_BLOCK]) {
retval = update_dind_extent_range(handle, tmp_inode,
- le32_to_cpu(i_data[EXT4_DIND_BLOCK]),
- &blk_count, &lb);
+ le32_to_cpu(i_data[EXT4_DIND_BLOCK]), &lb);
if (retval)
goto err_out;
} else
- blk_count += max_entries * max_entries;
+ lb.curr_block += max_entries * max_entries;
if (i_data[EXT4_TIND_BLOCK]) {
retval = update_tind_extent_range(handle, tmp_inode,
- le32_to_cpu(i_data[EXT4_TIND_BLOCK]),
- &blk_count, &lb);
+ le32_to_cpu(i_data[EXT4_TIND_BLOCK]), &lb);
if (retval)
goto err_out;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-30 19:34:42 +0000