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Date: Thu, 4 Aug 2022 12:56:17 +0300
From: Alexey Lyashkov <alexey.lyashkov@...il.com>
To: linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
Andreas Dilger <adilger@...ger.ca>,
Artem Blagodarenko <artem.blagodarenko@...il.com>
Cc: Alexey Lyashkov <alexey.lyashkov@...il.com>
Subject: [PATCH 4/5] remove an e2fsck context from bh emulation code.
In order to generalize a journal handing, remove a e2fsck context
from generic structures like buffer_head, and device.
But fast commit code want a e2fsck context as well, so move it pointer
to journal struct.
---
e2fsck/journal.c | 46 ++++++++++++++++++++---------------------
lib/ext2fs/jfs_compat.h | 2 ++
lib/support/jfs_user.h | 12 -----------
3 files changed, 25 insertions(+), 35 deletions(-)
diff --git a/e2fsck/journal.c b/e2fsck/journal.c
index 682d82a4..728f5a24 100644
--- a/e2fsck/journal.c
+++ b/e2fsck/journal.c
@@ -58,7 +58,7 @@ int jbd2_journal_bmap(journal_t *journal, unsigned long block,
return 0;
}
- retval= ext2fs_bmap2(inode->i_ctx->fs, inode->i_ino,
+ retval= ext2fs_bmap2(inode->i_fs, inode->i_ino,
&inode->i_ext2, NULL, 0, (blk64_t) block,
0, &pblk);
*phys = pblk;
@@ -70,11 +70,12 @@ struct buffer_head *getblk(kdev_t kdev, unsigned long long blocknr,
int blocksize)
{
struct buffer_head *bh;
- int bufsize = sizeof(*bh) + kdev->k_ctx->fs->blocksize -
+ int bufsize = sizeof(*bh) + kdev->k_fs->blocksize -
sizeof(bh->b_data);
+ errcode_t retval;
- bh = e2fsck_allocate_memory(kdev->k_ctx, bufsize, "block buffer");
- if (!bh)
+ retval = ext2fs_get_memzero(bufsize, &bh);
+ if (retval)
return NULL;
if (journal_enable_debug >= 3)
@@ -82,11 +83,11 @@ struct buffer_head *getblk(kdev_t kdev, unsigned long long blocknr,
jfs_debug(4, "getblk for block %llu (%d bytes)(total %d)\n",
blocknr, blocksize, bh_count);
- bh->b_ctx = kdev->k_ctx;
+ bh->b_fs = kdev->k_fs;
if (kdev->k_dev == K_DEV_FS)
- bh->b_io = kdev->k_ctx->fs->io;
+ bh->b_io = kdev->k_fs->io;
else
- bh->b_io = kdev->k_ctx->fs->journal_io;
+ bh->b_io = kdev->k_fs->journal_io;
bh->b_size = blocksize;
bh->b_blocknr = blocknr;
@@ -98,9 +99,9 @@ int sync_blockdev(kdev_t kdev)
io_channel io;
if (kdev->k_dev == K_DEV_FS)
- io = kdev->k_ctx->fs->io;
+ io = kdev->k_fs->io;
else
- io = kdev->k_ctx->fs->journal_io;
+ io = kdev->k_fs->journal_io;
return io_channel_flush(io) ? -EIO : 0;
}
@@ -120,7 +121,7 @@ void ll_rw_block(int rw, int op_flags EXT2FS_ATTR((unused)), int nr,
bh->b_blocknr,
1, bh->b_data);
if (retval) {
- com_err(bh->b_ctx->device_name, retval,
+ com_err(bh->b_fs->device_name, retval,
"while reading block %llu\n",
bh->b_blocknr);
bh->b_err = (int) retval;
@@ -135,7 +136,7 @@ void ll_rw_block(int rw, int op_flags EXT2FS_ATTR((unused)), int nr,
bh->b_blocknr,
1, bh->b_data);
if (retval) {
- com_err(bh->b_ctx->device_name, retval,
+ com_err(bh->b_fs->device_name, retval,
"while writing block %llu\n",
bh->b_blocknr);
bh->b_err = (int) retval;
@@ -223,7 +224,7 @@ static int process_journal_block(ext2_filsys fs,
static int ext4_fc_replay_scan(journal_t *j, struct buffer_head *bh,
int off, tid_t expected_tid)
{
- e2fsck_t ctx = j->j_fs_dev->k_ctx;
+ e2fsck_t ctx = j->j_ctx;
struct e2fsck_fc_replay_state *state;
int ret = JBD2_FC_REPLAY_CONTINUE;
struct ext4_fc_add_range ext;
@@ -796,7 +797,7 @@ static int ext4_fc_handle_del_range(e2fsck_t ctx, __u8 *val)
static int ext4_fc_replay(journal_t *journal, struct buffer_head *bh,
enum passtype pass, int off, tid_t expected_tid)
{
- e2fsck_t ctx = journal->j_fs_dev->k_ctx;
+ e2fsck_t ctx = journal->j_ctx;
struct e2fsck_fc_replay_state *state = &ctx->fc_replay_state;
int ret = JBD2_FC_REPLAY_CONTINUE;
struct ext4_fc_tl tl;
@@ -924,10 +925,11 @@ static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
}
dev_journal = dev_fs+1;
- dev_fs->k_ctx = dev_journal->k_ctx = ctx;
+ dev_fs->k_fs = dev_journal->k_fs = ctx->fs;
dev_fs->k_dev = K_DEV_FS;
dev_journal->k_dev = K_DEV_JOURNAL;
+ journal->j_ctx = ctx;
journal->j_dev = dev_journal;
journal->j_fs_dev = dev_fs;
journal->j_inode = NULL;
@@ -945,7 +947,7 @@ static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
goto errout;
}
- j_inode->i_ctx = ctx;
+ j_inode->i_fs = ctx->fs;
j_inode->i_ino = sb->s_journal_inum;
if ((retval = ext2fs_read_inode(ctx->fs,
@@ -1186,9 +1188,8 @@ static errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
}
#define V1_SB_SIZE 0x0024
-static void clear_v2_journal_fields(journal_t *journal)
+static void clear_v2_journal_fields(e2fsck_t ctx, journal_t *journal)
{
- e2fsck_t ctx = journal->j_dev->k_ctx;
struct problem_context pctx;
clear_problem_context(&pctx);
@@ -1203,9 +1204,8 @@ static void clear_v2_journal_fields(journal_t *journal)
}
-static errcode_t e2fsck_journal_load(journal_t *journal)
+static errcode_t e2fsck_journal_load(e2fsck_t ctx, journal_t *journal)
{
- e2fsck_t ctx = journal->j_dev->k_ctx;
journal_superblock_t *jsb;
struct buffer_head *jbh = journal->j_sb_buffer;
struct problem_context pctx;
@@ -1231,14 +1231,14 @@ static errcode_t e2fsck_journal_load(journal_t *journal)
jsb->s_feature_incompat ||
jsb->s_feature_ro_compat ||
jsb->s_nr_users)
- clear_v2_journal_fields(journal);
+ clear_v2_journal_fields(ctx, journal);
break;
case JBD2_SUPERBLOCK_V2:
journal->j_format_version = 2;
if (ntohl(jsb->s_nr_users) > 1 &&
uuid_is_null(ctx->fs->super->s_journal_uuid))
- clear_v2_journal_fields(journal);
+ clear_v2_journal_fields(ctx, journal);
if (ntohl(jsb->s_nr_users) > 1) {
fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
return EXT2_ET_JOURNAL_UNSUPP_VERSION;
@@ -1425,7 +1425,7 @@ errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx)
return retval;
}
- retval = e2fsck_journal_load(journal);
+ retval = e2fsck_journal_load(ctx, journal);
if (retval) {
if ((retval == EXT2_ET_CORRUPT_JOURNAL_SB) ||
((retval == EXT2_ET_UNSUPP_FEATURE) &&
@@ -1543,7 +1543,7 @@ static errcode_t recover_ext3_journal(e2fsck_t ctx)
if (retval)
return retval;
- retval = e2fsck_journal_load(journal);
+ retval = e2fsck_journal_load(ctx, journal);
if (retval)
goto errout;
diff --git a/lib/ext2fs/jfs_compat.h b/lib/ext2fs/jfs_compat.h
index e11cf494..bfafae12 100644
--- a/lib/ext2fs/jfs_compat.h
+++ b/lib/ext2fs/jfs_compat.h
@@ -41,6 +41,7 @@ typedef struct kdev_s *kdev_t;
struct buffer_head;
struct inode;
+struct e2fsck_struct;
typedef unsigned int gfp_t;
#define GFP_KERNEL 0
@@ -98,6 +99,7 @@ struct journal_s
struct jbd2_revoke_table_s *j_revoke_table[2];
tid_t j_failed_commit;
__u32 j_csum_seed;
+ struct e2fsck_struct * j_ctx;
int (*j_fc_replay_callback)(struct journal_s *journal,
struct buffer_head *bh,
enum passtype pass, int off,
diff --git a/lib/support/jfs_user.h b/lib/support/jfs_user.h
index b9c2fa54..bb392811 100644
--- a/lib/support/jfs_user.h
+++ b/lib/support/jfs_user.h
@@ -40,11 +40,7 @@
#endif
struct buffer_head {
-#ifdef DEBUGFS
ext2_filsys b_fs;
-#else
- e2fsck_t b_ctx;
-#endif
io_channel b_io;
int b_size;
int b_err;
@@ -55,21 +51,13 @@ struct buffer_head {
};
struct inode {
-#ifdef DEBUGFS
ext2_filsys i_fs;
-#else
- e2fsck_t i_ctx;
-#endif
ext2_ino_t i_ino;
struct ext2_inode i_ext2;
};
struct kdev_s {
-#ifdef DEBUGFS
ext2_filsys k_fs;
-#else
- e2fsck_t k_ctx;
-#endif
int k_dev;
};
--
2.31.1
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