mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 14:43:58 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
536 lines
23 KiB
C
536 lines
23 KiB
C
/* Copyright 1996-2000 Hans Reiser, see reiserfs/README for licensing
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* and copyright details */
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#ifndef _LINUX_REISER_FS_SB
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#define _LINUX_REISER_FS_SB
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#ifdef __KERNEL__
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#include <linux/workqueue.h>
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#include <linux/rwsem.h>
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#endif
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typedef enum {
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reiserfs_attrs_cleared = 0x00000001,
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} reiserfs_super_block_flags;
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/* struct reiserfs_super_block accessors/mutators
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* since this is a disk structure, it will always be in
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* little endian format. */
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#define sb_block_count(sbp) (le32_to_cpu((sbp)->s_v1.s_block_count))
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#define set_sb_block_count(sbp,v) ((sbp)->s_v1.s_block_count = cpu_to_le32(v))
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#define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_v1.s_free_blocks))
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#define set_sb_free_blocks(sbp,v) ((sbp)->s_v1.s_free_blocks = cpu_to_le32(v))
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#define sb_root_block(sbp) (le32_to_cpu((sbp)->s_v1.s_root_block))
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#define set_sb_root_block(sbp,v) ((sbp)->s_v1.s_root_block = cpu_to_le32(v))
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#define sb_jp_journal_1st_block(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_1st_block))
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#define set_sb_jp_journal_1st_block(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_1st_block = cpu_to_le32(v))
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#define sb_jp_journal_dev(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_dev))
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#define set_sb_jp_journal_dev(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_dev = cpu_to_le32(v))
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#define sb_jp_journal_size(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_size))
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#define set_sb_jp_journal_size(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_size = cpu_to_le32(v))
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#define sb_jp_journal_trans_max(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_trans_max))
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#define set_sb_jp_journal_trans_max(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_trans_max = cpu_to_le32(v))
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#define sb_jp_journal_magic(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_magic))
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#define set_sb_jp_journal_magic(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_magic = cpu_to_le32(v))
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#define sb_jp_journal_max_batch(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_batch))
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#define set_sb_jp_journal_max_batch(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_max_batch = cpu_to_le32(v))
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#define sb_jp_jourmal_max_commit_age(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_commit_age))
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#define set_sb_jp_journal_max_commit_age(sbp,v) \
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((sbp)->s_v1.s_journal.jp_journal_max_commit_age = cpu_to_le32(v))
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#define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_v1.s_blocksize))
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#define set_sb_blocksize(sbp,v) ((sbp)->s_v1.s_blocksize = cpu_to_le16(v))
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#define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_maxsize))
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#define set_sb_oid_maxsize(sbp,v) ((sbp)->s_v1.s_oid_maxsize = cpu_to_le16(v))
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#define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_cursize))
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#define set_sb_oid_cursize(sbp,v) ((sbp)->s_v1.s_oid_cursize = cpu_to_le16(v))
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#define sb_umount_state(sbp) (le16_to_cpu((sbp)->s_v1.s_umount_state))
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#define set_sb_umount_state(sbp,v) ((sbp)->s_v1.s_umount_state = cpu_to_le16(v))
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#define sb_fs_state(sbp) (le16_to_cpu((sbp)->s_v1.s_fs_state))
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#define set_sb_fs_state(sbp,v) ((sbp)->s_v1.s_fs_state = cpu_to_le16(v))
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#define sb_hash_function_code(sbp) \
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(le32_to_cpu((sbp)->s_v1.s_hash_function_code))
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#define set_sb_hash_function_code(sbp,v) \
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((sbp)->s_v1.s_hash_function_code = cpu_to_le32(v))
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#define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_v1.s_tree_height))
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#define set_sb_tree_height(sbp,v) ((sbp)->s_v1.s_tree_height = cpu_to_le16(v))
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#define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_v1.s_bmap_nr))
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#define set_sb_bmap_nr(sbp,v) ((sbp)->s_v1.s_bmap_nr = cpu_to_le16(v))
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#define sb_version(sbp) (le16_to_cpu((sbp)->s_v1.s_version))
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#define set_sb_version(sbp,v) ((sbp)->s_v1.s_version = cpu_to_le16(v))
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#define sb_reserved_for_journal(sbp) \
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(le16_to_cpu((sbp)->s_v1.s_reserved_for_journal))
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#define set_sb_reserved_for_journal(sbp,v) \
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((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v))
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/* LOGGING -- */
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/* These all interelate for performance.
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**
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** If the journal block count is smaller than n transactions, you lose speed.
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** I don't know what n is yet, I'm guessing 8-16.
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**
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** typical transaction size depends on the application, how often fsync is
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** called, and how many metadata blocks you dirty in a 30 second period.
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** The more small files (<16k) you use, the larger your transactions will
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** be.
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**
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** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal
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** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough
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** to prevent wrapping before dirty meta blocks get to disk.
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**
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** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal
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** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping.
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**
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** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
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**
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*/
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/* don't mess with these for a while */
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/* we have a node size define somewhere in reiserfs_fs.h. -Hans */
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#define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */
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#define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */
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#define JOURNAL_HASH_SIZE 8192
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#define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */
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/* One of these for every block in every transaction
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** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a
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** hash of all the in memory transactions.
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** next and prev are used by the current transaction (journal_hash).
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** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash
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** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging
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** to a given transaction.
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*/
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struct reiserfs_journal_cnode {
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struct buffer_head *bh ; /* real buffer head */
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struct super_block *sb ; /* dev of real buffer head */
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__u32 blocknr ; /* block number of real buffer head, == 0 when buffer on disk */
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long state ;
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struct reiserfs_journal_list *jlist ; /* journal list this cnode lives in */
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struct reiserfs_journal_cnode *next ; /* next in transaction list */
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struct reiserfs_journal_cnode *prev ; /* prev in transaction list */
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struct reiserfs_journal_cnode *hprev ; /* prev in hash list */
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struct reiserfs_journal_cnode *hnext ; /* next in hash list */
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};
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struct reiserfs_bitmap_node {
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int id ;
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char *data ;
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struct list_head list ;
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} ;
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struct reiserfs_list_bitmap {
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struct reiserfs_journal_list *journal_list ;
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struct reiserfs_bitmap_node **bitmaps ;
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} ;
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/*
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** one of these for each transaction. The most important part here is the j_realblock.
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** this list of cnodes is used to hash all the blocks in all the commits, to mark all the
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** real buffer heads dirty once all the commits hit the disk,
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** and to make sure every real block in a transaction is on disk before allowing the log area
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** to be overwritten */
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struct reiserfs_journal_list {
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unsigned long j_start ;
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unsigned long j_state;
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unsigned long j_len ;
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atomic_t j_nonzerolen ;
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atomic_t j_commit_left ;
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atomic_t j_older_commits_done ; /* all commits older than this on disk*/
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struct semaphore j_commit_lock;
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unsigned long j_trans_id ;
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time_t j_timestamp ;
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struct reiserfs_list_bitmap *j_list_bitmap ;
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struct buffer_head *j_commit_bh ; /* commit buffer head */
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struct reiserfs_journal_cnode *j_realblock ;
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struct reiserfs_journal_cnode *j_freedlist ; /* list of buffers that were freed during this trans. free each of these on flush */
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/* time ordered list of all active transactions */
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struct list_head j_list;
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/* time ordered list of all transactions we haven't tried to flush yet */
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struct list_head j_working_list;
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/* list of tail conversion targets in need of flush before commit */
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struct list_head j_tail_bh_list;
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/* list of data=ordered buffers in need of flush before commit */
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struct list_head j_bh_list;
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int j_refcount;
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} ;
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struct reiserfs_journal {
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struct buffer_head ** j_ap_blocks ; /* journal blocks on disk */
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struct reiserfs_journal_cnode *j_last ; /* newest journal block */
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struct reiserfs_journal_cnode *j_first ; /* oldest journal block. start here for traverse */
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struct file *j_dev_file;
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struct block_device *j_dev_bd;
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int j_1st_reserved_block; /* first block on s_dev of reserved area journal */
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long j_state ;
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unsigned long j_trans_id ;
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unsigned long j_mount_id ;
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unsigned long j_start ; /* start of current waiting commit (index into j_ap_blocks) */
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unsigned long j_len ; /* lenght of current waiting commit */
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unsigned long j_len_alloc ; /* number of buffers requested by journal_begin() */
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atomic_t j_wcount ; /* count of writers for current commit */
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unsigned long j_bcount ; /* batch count. allows turning X transactions into 1 */
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unsigned long j_first_unflushed_offset ; /* first unflushed transactions offset */
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unsigned long j_last_flush_trans_id ; /* last fully flushed journal timestamp */
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struct buffer_head *j_header_bh ;
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time_t j_trans_start_time ; /* time this transaction started */
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struct semaphore j_lock;
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struct semaphore j_flush_sem;
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wait_queue_head_t j_join_wait ; /* wait for current transaction to finish before starting new one */
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atomic_t j_jlock ; /* lock for j_join_wait */
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int j_list_bitmap_index ; /* number of next list bitmap to use */
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int j_must_wait ; /* no more journal begins allowed. MUST sleep on j_join_wait */
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int j_next_full_flush ; /* next journal_end will flush all journal list */
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int j_next_async_flush ; /* next journal_end will flush all async commits */
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int j_cnode_used ; /* number of cnodes on the used list */
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int j_cnode_free ; /* number of cnodes on the free list */
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unsigned int j_trans_max ; /* max number of blocks in a transaction. */
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unsigned int j_max_batch ; /* max number of blocks to batch into a trans */
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unsigned int j_max_commit_age ; /* in seconds, how old can an async commit be */
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unsigned int j_max_trans_age ; /* in seconds, how old can a transaction be */
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unsigned int j_default_max_commit_age ; /* the default for the max commit age */
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struct reiserfs_journal_cnode *j_cnode_free_list ;
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struct reiserfs_journal_cnode *j_cnode_free_orig ; /* orig pointer returned from vmalloc */
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struct reiserfs_journal_list *j_current_jl;
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int j_free_bitmap_nodes ;
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int j_used_bitmap_nodes ;
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int j_num_lists; /* total number of active transactions */
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int j_num_work_lists; /* number that need attention from kreiserfsd */
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/* debugging to make sure things are flushed in order */
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int j_last_flush_id;
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/* debugging to make sure things are committed in order */
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int j_last_commit_id;
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struct list_head j_bitmap_nodes ;
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struct list_head j_dirty_buffers ;
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spinlock_t j_dirty_buffers_lock ; /* protects j_dirty_buffers */
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/* list of all active transactions */
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struct list_head j_journal_list;
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/* lists that haven't been touched by writeback attempts */
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struct list_head j_working_list;
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struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS] ; /* array of bitmaps to record the deleted blocks */
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struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for real buffer heads in current trans */
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struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for all the real buffer heads in all
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the transactions */
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struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */
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int j_persistent_trans;
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unsigned long j_max_trans_size ;
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unsigned long j_max_batch_size ;
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int j_errno;
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/* when flushing ordered buffers, throttle new ordered writers */
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struct work_struct j_work;
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atomic_t j_async_throttle;
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};
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enum journal_state_bits {
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J_WRITERS_BLOCKED = 1, /* set when new writers not allowed */
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J_WRITERS_QUEUED, /* set when log is full due to too many writers */
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J_ABORTED, /* set when log is aborted */
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};
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#define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */
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typedef __u32 (*hashf_t) (const signed char *, int);
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struct reiserfs_bitmap_info
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{
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// FIXME: Won't work with block sizes > 8K
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__u16 first_zero_hint;
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__u16 free_count;
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struct buffer_head *bh; /* the actual bitmap */
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};
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struct proc_dir_entry;
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#if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
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typedef unsigned long int stat_cnt_t;
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typedef struct reiserfs_proc_info_data
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{
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spinlock_t lock;
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int exiting;
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int max_hash_collisions;
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stat_cnt_t breads;
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stat_cnt_t bread_miss;
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stat_cnt_t search_by_key;
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stat_cnt_t search_by_key_fs_changed;
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stat_cnt_t search_by_key_restarted;
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stat_cnt_t insert_item_restarted;
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stat_cnt_t paste_into_item_restarted;
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stat_cnt_t cut_from_item_restarted;
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stat_cnt_t delete_solid_item_restarted;
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stat_cnt_t delete_item_restarted;
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stat_cnt_t leaked_oid;
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stat_cnt_t leaves_removable;
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/* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
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stat_cnt_t balance_at[ 5 ]; /* XXX */
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/* sbk == search_by_key */
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stat_cnt_t sbk_read_at[ 5 ]; /* XXX */
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stat_cnt_t sbk_fs_changed[ 5 ];
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stat_cnt_t sbk_restarted[ 5 ];
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stat_cnt_t items_at[ 5 ]; /* XXX */
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stat_cnt_t free_at[ 5 ]; /* XXX */
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stat_cnt_t can_node_be_removed[ 5 ]; /* XXX */
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long int lnum[ 5 ]; /* XXX */
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long int rnum[ 5 ]; /* XXX */
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long int lbytes[ 5 ]; /* XXX */
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long int rbytes[ 5 ]; /* XXX */
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stat_cnt_t get_neighbors[ 5 ];
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stat_cnt_t get_neighbors_restart[ 5 ];
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stat_cnt_t need_l_neighbor[ 5 ];
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stat_cnt_t need_r_neighbor[ 5 ];
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stat_cnt_t free_block;
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struct __scan_bitmap_stats {
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stat_cnt_t call;
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stat_cnt_t wait;
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stat_cnt_t bmap;
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stat_cnt_t retry;
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stat_cnt_t in_journal_hint;
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stat_cnt_t in_journal_nohint;
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stat_cnt_t stolen;
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} scan_bitmap;
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struct __journal_stats {
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stat_cnt_t in_journal;
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stat_cnt_t in_journal_bitmap;
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stat_cnt_t in_journal_reusable;
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stat_cnt_t lock_journal;
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stat_cnt_t lock_journal_wait;
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stat_cnt_t journal_being;
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stat_cnt_t journal_relock_writers;
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stat_cnt_t journal_relock_wcount;
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stat_cnt_t mark_dirty;
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stat_cnt_t mark_dirty_already;
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stat_cnt_t mark_dirty_notjournal;
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stat_cnt_t restore_prepared;
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stat_cnt_t prepare;
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stat_cnt_t prepare_retry;
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} journal;
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} reiserfs_proc_info_data_t;
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#else
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typedef struct reiserfs_proc_info_data
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{} reiserfs_proc_info_data_t;
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#endif
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/* reiserfs union of in-core super block data */
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struct reiserfs_sb_info
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{
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struct buffer_head * s_sbh; /* Buffer containing the super block */
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/* both the comment and the choice of
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name are unclear for s_rs -Hans */
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struct reiserfs_super_block * s_rs; /* Pointer to the super block in the buffer */
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struct reiserfs_bitmap_info * s_ap_bitmap;
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struct reiserfs_journal *s_journal ; /* pointer to journal information */
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unsigned short s_mount_state; /* reiserfs state (valid, invalid) */
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/* Comment? -Hans */
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void (*end_io_handler)(struct buffer_head *, int);
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hashf_t s_hash_function; /* pointer to function which is used
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to sort names in directory. Set on
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mount */
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unsigned long s_mount_opt; /* reiserfs's mount options are set
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here (currently - NOTAIL, NOLOG,
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REPLAYONLY) */
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struct { /* This is a structure that describes block allocator options */
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unsigned long bits; /* Bitfield for enable/disable kind of options */
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unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */
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int border; /* percentage of disk, border takes */
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int preallocmin; /* Minimal file size (in blocks) starting from which we do preallocations */
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int preallocsize; /* Number of blocks we try to prealloc when file
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reaches preallocmin size (in blocks) or
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prealloc_list is empty. */
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} s_alloc_options;
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/* Comment? -Hans */
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wait_queue_head_t s_wait;
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/* To be obsoleted soon by per buffer seals.. -Hans */
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atomic_t s_generation_counter; // increased by one every time the
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// tree gets re-balanced
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unsigned long s_properties; /* File system properties. Currently holds
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on-disk FS format */
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/* session statistics */
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int s_kmallocs;
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int s_disk_reads;
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int s_disk_writes;
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int s_fix_nodes;
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|
int s_do_balance;
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int s_unneeded_left_neighbor;
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|
int s_good_search_by_key_reada;
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|
int s_bmaps;
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|
int s_bmaps_without_search;
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|
int s_direct2indirect;
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int s_indirect2direct;
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/* set up when it's ok for reiserfs_read_inode2() to read from
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disk inode with nlink==0. Currently this is only used during
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|
finish_unfinished() processing at mount time */
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int s_is_unlinked_ok;
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|
reiserfs_proc_info_data_t s_proc_info_data;
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struct proc_dir_entry *procdir;
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|
int reserved_blocks; /* amount of blocks reserved for further allocations */
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spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
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struct dentry *priv_root; /* root of /.reiserfs_priv */
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struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
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struct rw_semaphore xattr_dir_sem;
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|
|
|
int j_errno;
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|
#ifdef CONFIG_QUOTA
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char *s_qf_names[MAXQUOTAS];
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|
int s_jquota_fmt;
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|
#endif
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|
};
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|
|
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/* Definitions of reiserfs on-disk properties: */
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|
#define REISERFS_3_5 0
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#define REISERFS_3_6 1
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|
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enum reiserfs_mount_options {
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/* Mount options */
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REISERFS_LARGETAIL, /* large tails will be created in a session */
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REISERFS_SMALLTAIL, /* small (for files less than block size) tails will be created in a session */
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|
REPLAYONLY, /* replay journal and return 0. Use by fsck */
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|
REISERFS_CONVERT, /* -o conv: causes conversion of old
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|
format super block to the new
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|
format. If not specified - old
|
|
partition will be dealt with in a
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|
manner of 3.5.x */
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|
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|
/* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
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|
** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option
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|
** is not required. If the normal autodection code can't determine which
|
|
** hash to use (because both hases had the same value for a file)
|
|
** use this option to force a specific hash. It won't allow you to override
|
|
** the existing hash on the FS, so if you have a tea hash disk, and mount
|
|
** with -o hash=rupasov, the mount will fail.
|
|
*/
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|
FORCE_TEA_HASH, /* try to force tea hash on mount */
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|
FORCE_RUPASOV_HASH, /* try to force rupasov hash on mount */
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|
FORCE_R5_HASH, /* try to force rupasov hash on mount */
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|
FORCE_HASH_DETECT, /* try to detect hash function on mount */
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|
|
|
REISERFS_DATA_LOG,
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|
REISERFS_DATA_ORDERED,
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|
REISERFS_DATA_WRITEBACK,
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|
|
|
/* used for testing experimental features, makes benchmarking new
|
|
features with and without more convenient, should never be used by
|
|
users in any code shipped to users (ideally) */
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|
|
|
REISERFS_NO_BORDER,
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|
REISERFS_NO_UNHASHED_RELOCATION,
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|
REISERFS_HASHED_RELOCATION,
|
|
REISERFS_ATTRS,
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|
REISERFS_XATTRS,
|
|
REISERFS_XATTRS_USER,
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|
REISERFS_POSIXACL,
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|
REISERFS_BARRIER_NONE,
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|
REISERFS_BARRIER_FLUSH,
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|
|
|
/* Actions on error */
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|
REISERFS_ERROR_PANIC,
|
|
REISERFS_ERROR_RO,
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|
REISERFS_ERROR_CONTINUE,
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|
|
|
REISERFS_TEST1,
|
|
REISERFS_TEST2,
|
|
REISERFS_TEST3,
|
|
REISERFS_TEST4,
|
|
REISERFS_UNSUPPORTED_OPT,
|
|
};
|
|
|
|
#define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
|
|
#define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
|
|
#define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
|
|
#define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
|
|
#define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
|
|
#define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
|
|
#define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
|
|
#define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
|
|
|
|
#define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
|
|
#define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
|
|
#define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
|
|
#define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
|
|
#define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
|
|
#define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
|
|
#define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
|
|
#define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
|
|
#define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
|
|
#define reiserfs_xattrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS))
|
|
#define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
|
|
#define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
|
|
#define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
|
|
#define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
|
|
#define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
|
|
|
|
#define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC))
|
|
#define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO))
|
|
|
|
void reiserfs_file_buffer (struct buffer_head * bh, int list);
|
|
extern struct file_system_type reiserfs_fs_type;
|
|
int reiserfs_resize(struct super_block *, unsigned long) ;
|
|
|
|
#define CARRY_ON 0
|
|
#define SCHEDULE_OCCURRED 1
|
|
|
|
|
|
#define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
|
|
#define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
|
|
#define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
|
|
#define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
|
|
#define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
|
|
|
|
#define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
|
|
|
|
/* A safe version of the "bdevname", which returns the "s_id" field of
|
|
* a superblock or else "Null superblock" if the super block is NULL.
|
|
*/
|
|
static inline char *reiserfs_bdevname(struct super_block *s)
|
|
{
|
|
return (s == NULL) ? "Null superblock" : s -> s_id;
|
|
}
|
|
|
|
#define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal)))
|
|
static inline int __reiserfs_is_journal_aborted (struct reiserfs_journal *journal)
|
|
{
|
|
return test_bit (J_ABORTED, &journal->j_state);
|
|
}
|
|
|
|
#endif /* _LINUX_REISER_FS_SB */
|