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Diffstat (limited to 'include/linux/ext3_jbd.h')
| -rw-r--r-- | include/linux/ext3_jbd.h | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/include/linux/ext3_jbd.h b/include/linux/ext3_jbd.h deleted file mode 100644 index d7b5ddca99c2..000000000000 --- a/include/linux/ext3_jbd.h +++ /dev/null @@ -1,229 +0,0 @@ -/* - * linux/include/linux/ext3_jbd.h - * - * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 - * - * Copyright 1998--1999 Red Hat corp --- All Rights Reserved - * - * This file is part of the Linux kernel and is made available under - * the terms of the GNU General Public License, version 2, or at your - * option, any later version, incorporated herein by reference. - * - * Ext3-specific journaling extensions. - */ - -#ifndef _LINUX_EXT3_JBD_H -#define _LINUX_EXT3_JBD_H - -#include <linux/fs.h> -#include <linux/jbd.h> -#include <linux/ext3_fs.h> - -#define EXT3_JOURNAL(inode) (EXT3_SB((inode)->i_sb)->s_journal) - -/* Define the number of blocks we need to account to a transaction to - * modify one block of data. - * - * We may have to touch one inode, one bitmap buffer, up to three - * indirection blocks, the group and superblock summaries, and the data - * block to complete the transaction. */ - -#define EXT3_SINGLEDATA_TRANS_BLOCKS 8U - -/* Extended attribute operations touch at most two data buffers, - * two bitmap buffers, and two group summaries, in addition to the inode - * and the superblock, which are already accounted for. */ - -#define EXT3_XATTR_TRANS_BLOCKS 6U - -/* Define the minimum size for a transaction which modifies data. This - * needs to take into account the fact that we may end up modifying two - * quota files too (one for the group, one for the user quota). The - * superblock only gets updated once, of course, so don't bother - * counting that again for the quota updates. */ - -#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \ - EXT3_XATTR_TRANS_BLOCKS - 2 + \ - EXT3_MAXQUOTAS_TRANS_BLOCKS(sb)) - -/* Delete operations potentially hit one directory's namespace plus an - * entire inode, plus arbitrary amounts of bitmap/indirection data. Be - * generous. We can grow the delete transaction later if necessary. */ - -#define EXT3_DELETE_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) + 64) - -/* Define an arbitrary limit for the amount of data we will anticipate - * writing to any given transaction. For unbounded transactions such as - * write(2) and truncate(2) we can write more than this, but we always - * start off at the maximum transaction size and grow the transaction - * optimistically as we go. */ - -#define EXT3_MAX_TRANS_DATA 64U - -/* We break up a large truncate or write transaction once the handle's - * buffer credits gets this low, we need either to extend the - * transaction or to start a new one. Reserve enough space here for - * inode, bitmap, superblock, group and indirection updates for at least - * one block, plus two quota updates. Quota allocations are not - * needed. */ - -#define EXT3_RESERVE_TRANS_BLOCKS 12U - -#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8 - -#ifdef CONFIG_QUOTA -/* Amount of blocks needed for quota update - we know that the structure was - * allocated so we need to update only inode+data */ -#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0) -/* Amount of blocks needed for quota insert/delete - we do some block writes - * but inode, sb and group updates are done only once */ -#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\ - (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0) -#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\ - (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0) -#else -#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0 -#define EXT3_QUOTA_INIT_BLOCKS(sb) 0 -#define EXT3_QUOTA_DEL_BLOCKS(sb) 0 -#endif -#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb)) -#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb)) -#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb)) - -int -ext3_mark_iloc_dirty(handle_t *handle, - struct inode *inode, - struct ext3_iloc *iloc); - -/* - * On success, We end up with an outstanding reference count against - * iloc->bh. This _must_ be cleaned up later. - */ - -int ext3_reserve_inode_write(handle_t *handle, struct inode *inode, - struct ext3_iloc *iloc); - -int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode); - -/* - * Wrapper functions with which ext3 calls into JBD. The intent here is - * to allow these to be turned into appropriate stubs so ext3 can control - * ext2 filesystems, so ext2+ext3 systems only nee one fs. This work hasn't - * been done yet. - */ - -static inline void ext3_journal_release_buffer(handle_t *handle, - struct buffer_head *bh) -{ - journal_release_buffer(handle, bh); -} - -void ext3_journal_abort_handle(const char *caller, const char *err_fn, - struct buffer_head *bh, handle_t *handle, int err); - -int __ext3_journal_get_undo_access(const char *where, handle_t *handle, - struct buffer_head *bh); - -int __ext3_journal_get_write_access(const char *where, handle_t *handle, - struct buffer_head *bh); - -int __ext3_journal_forget(const char *where, handle_t *handle, - struct buffer_head *bh); - -int __ext3_journal_revoke(const char *where, handle_t *handle, - unsigned long blocknr, struct buffer_head *bh); - -int __ext3_journal_get_create_access(const char *where, - handle_t *handle, struct buffer_head *bh); - -int __ext3_journal_dirty_metadata(const char *where, - handle_t *handle, struct buffer_head *bh); - -#define ext3_journal_get_undo_access(handle, bh) \ - __ext3_journal_get_undo_access(__func__, (handle), (bh)) -#define ext3_journal_get_write_access(handle, bh) \ - __ext3_journal_get_write_access(__func__, (handle), (bh)) -#define ext3_journal_revoke(handle, blocknr, bh) \ - __ext3_journal_revoke(__func__, (handle), (blocknr), (bh)) -#define ext3_journal_get_create_access(handle, bh) \ - __ext3_journal_get_create_access(__func__, (handle), (bh)) -#define ext3_journal_dirty_metadata(handle, bh) \ - __ext3_journal_dirty_metadata(__func__, (handle), (bh)) -#define ext3_journal_forget(handle, bh) \ - __ext3_journal_forget(__func__, (handle), (bh)) - -int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh); - -handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks); -int __ext3_journal_stop(const char *where, handle_t *handle); - -static inline handle_t *ext3_journal_start(struct inode *inode, int nblocks) -{ - return ext3_journal_start_sb(inode->i_sb, nblocks); -} - -#define ext3_journal_stop(handle) \ - __ext3_journal_stop(__func__, (handle)) - -static inline handle_t *ext3_journal_current_handle(void) -{ - return journal_current_handle(); -} - -static inline int ext3_journal_extend(handle_t *handle, int nblocks) -{ - return journal_extend(handle, nblocks); -} - -static inline int ext3_journal_restart(handle_t *handle, int nblocks) -{ - return journal_restart(handle, nblocks); -} - -static inline int ext3_journal_blocks_per_page(struct inode *inode) -{ - return journal_blocks_per_page(inode); -} - -static inline int ext3_journal_force_commit(journal_t *journal) -{ - return journal_force_commit(journal); -} - -/* super.c */ -int ext3_force_commit(struct super_block *sb); - -static inline int ext3_should_journal_data(struct inode *inode) -{ - if (!S_ISREG(inode->i_mode)) - return 1; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA) - return 1; - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) - return 1; - return 0; -} - -static inline int ext3_should_order_data(struct inode *inode) -{ - if (!S_ISREG(inode->i_mode)) - return 0; - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) - return 0; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA) - return 1; - return 0; -} - -static inline int ext3_should_writeback_data(struct inode *inode) -{ - if (!S_ISREG(inode->i_mode)) - return 0; - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) - return 0; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA) - return 1; - return 0; -} - -#endif /* _LINUX_EXT3_JBD_H */ |