4b6f5d20b0
This is a conversion to make the various file_operations structs in fs/ const. Basically a regexp job, with a few manual fixups The goal is both to increase correctness (harder to accidentally write to shared datastructures) and reducing the false sharing of cachelines with things that get dirty in .data (while .rodata is nicely read only and thus cache clean) Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
643 lines
16 KiB
C
643 lines
16 KiB
C
/* -*- linux-c -*- */
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/* fs/reiserfs/procfs.c */
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/*
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* Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
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*/
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/* proc info support a la one created by Sizif@Botik.RU for PGC */
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/* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/time.h>
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#include <linux/seq_file.h>
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#include <asm/uaccess.h>
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#include <linux/reiserfs_fs.h>
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#include <linux/reiserfs_fs_sb.h>
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#include <linux/smp_lock.h>
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#if defined( REISERFS_PROC_INFO )
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/*
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* LOCKING:
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*
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* We rely on new Alexander Viro's super-block locking.
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*
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*/
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static int show_version(struct seq_file *m, struct super_block *sb)
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{
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char *format;
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if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) {
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format = "3.6";
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} else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) {
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format = "3.5";
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} else {
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format = "unknown";
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}
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seq_printf(m, "%s format\twith checks %s\n", format,
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#if defined( CONFIG_REISERFS_CHECK )
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"on"
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#else
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"off"
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#endif
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);
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return 0;
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}
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int reiserfs_global_version_in_proc(char *buffer, char **start, off_t offset,
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int count, int *eof, void *data)
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{
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*start = buffer;
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*eof = 1;
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return 0;
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}
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#define SF( x ) ( r -> x )
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#define SFP( x ) SF( s_proc_info_data.x )
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#define SFPL( x ) SFP( x[ level ] )
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#define SFPF( x ) SFP( scan_bitmap.x )
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#define SFPJ( x ) SFP( journal.x )
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#define D2C( x ) le16_to_cpu( x )
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#define D4C( x ) le32_to_cpu( x )
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#define DF( x ) D2C( rs -> s_v1.x )
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#define DFL( x ) D4C( rs -> s_v1.x )
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#define objectid_map( s, rs ) (old_format_only (s) ? \
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(__le32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \
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(__le32 *)(rs + 1))
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#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
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#define DJF( x ) le32_to_cpu( rs -> x )
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#define DJV( x ) le32_to_cpu( s_v1 -> x )
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#define DJP( x ) le32_to_cpu( jp -> x )
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#define JF( x ) ( r -> s_journal -> x )
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static int show_super(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *r = REISERFS_SB(sb);
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seq_printf(m, "state: \t%s\n"
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"mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
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"gen. counter: \t%i\n"
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"s_disk_reads: \t%i\n"
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"s_disk_writes: \t%i\n"
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"s_fix_nodes: \t%i\n"
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"s_do_balance: \t%i\n"
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"s_unneeded_left_neighbor: \t%i\n"
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"s_good_search_by_key_reada: \t%i\n"
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"s_bmaps: \t%i\n"
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"s_bmaps_without_search: \t%i\n"
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"s_direct2indirect: \t%i\n"
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"s_indirect2direct: \t%i\n"
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"\n"
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"max_hash_collisions: \t%i\n"
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"breads: \t%lu\n"
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"bread_misses: \t%lu\n"
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"search_by_key: \t%lu\n"
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"search_by_key_fs_changed: \t%lu\n"
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"search_by_key_restarted: \t%lu\n"
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"insert_item_restarted: \t%lu\n"
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"paste_into_item_restarted: \t%lu\n"
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"cut_from_item_restarted: \t%lu\n"
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"delete_solid_item_restarted: \t%lu\n"
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"delete_item_restarted: \t%lu\n"
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"leaked_oid: \t%lu\n"
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"leaves_removable: \t%lu\n",
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SF(s_mount_state) == REISERFS_VALID_FS ?
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"REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
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reiserfs_r5_hash(sb) ? "FORCE_R5 " : "",
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reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "",
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reiserfs_tea_hash(sb) ? "FORCE_TEA " : "",
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reiserfs_hash_detect(sb) ? "DETECT_HASH " : "",
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reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ",
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reiserfs_no_unhashed_relocation(sb) ?
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"NO_UNHASHED_RELOCATION " : "",
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reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "",
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reiserfs_test4(sb) ? "TEST4 " : "",
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have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ?
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"SMALL_TAILS " : "NO_TAILS ",
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replay_only(sb) ? "REPLAY_ONLY " : "",
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convert_reiserfs(sb) ? "CONV " : "",
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atomic_read(&r->s_generation_counter),
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SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
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SF(s_do_balance), SF(s_unneeded_left_neighbor),
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SF(s_good_search_by_key_reada), SF(s_bmaps),
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SF(s_bmaps_without_search), SF(s_direct2indirect),
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SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads),
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SFP(bread_miss), SFP(search_by_key),
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SFP(search_by_key_fs_changed), SFP(search_by_key_restarted),
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SFP(insert_item_restarted), SFP(paste_into_item_restarted),
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SFP(cut_from_item_restarted),
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SFP(delete_solid_item_restarted), SFP(delete_item_restarted),
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SFP(leaked_oid), SFP(leaves_removable));
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return 0;
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}
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static int show_per_level(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *r = REISERFS_SB(sb);
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int level;
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seq_printf(m, "level\t"
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" balances"
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" [sbk: reads"
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" fs_changed"
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" restarted]"
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" free space"
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" items"
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" can_remove"
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" lnum"
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" rnum"
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" lbytes"
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" rbytes"
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" get_neig"
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" get_neig_res" " need_l_neig" " need_r_neig" "\n");
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for (level = 0; level < MAX_HEIGHT; ++level) {
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seq_printf(m, "%i\t"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12li"
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" %12li"
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" %12li"
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" %12li"
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" %12lu"
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" %12lu"
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" %12lu"
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" %12lu"
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"\n",
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level,
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SFPL(balance_at),
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SFPL(sbk_read_at),
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SFPL(sbk_fs_changed),
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SFPL(sbk_restarted),
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SFPL(free_at),
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SFPL(items_at),
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SFPL(can_node_be_removed),
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SFPL(lnum),
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SFPL(rnum),
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SFPL(lbytes),
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SFPL(rbytes),
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SFPL(get_neighbors),
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SFPL(get_neighbors_restart),
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SFPL(need_l_neighbor), SFPL(need_r_neighbor)
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);
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}
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return 0;
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}
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static int show_bitmap(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *r = REISERFS_SB(sb);
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seq_printf(m, "free_block: %lu\n"
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" scan_bitmap:"
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" wait"
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" bmap"
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" retry"
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" stolen"
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" journal_hint"
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"journal_nohint"
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"\n"
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" %14lu"
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" %14lu"
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" %14lu"
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" %14lu"
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" %14lu"
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" %14lu"
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" %14lu"
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"\n",
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SFP(free_block),
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SFPF(call),
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SFPF(wait),
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SFPF(bmap),
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SFPF(retry),
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SFPF(stolen),
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SFPF(in_journal_hint), SFPF(in_journal_nohint));
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return 0;
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}
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static int show_on_disk_super(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
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struct reiserfs_super_block *rs = sb_info->s_rs;
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int hash_code = DFL(s_hash_function_code);
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__u32 flags = DJF(s_flags);
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seq_printf(m, "block_count: \t%i\n"
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"free_blocks: \t%i\n"
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"root_block: \t%i\n"
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"blocksize: \t%i\n"
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"oid_maxsize: \t%i\n"
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"oid_cursize: \t%i\n"
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"umount_state: \t%i\n"
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"magic: \t%10.10s\n"
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"fs_state: \t%i\n"
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"hash: \t%s\n"
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"tree_height: \t%i\n"
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"bmap_nr: \t%i\n"
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"version: \t%i\n"
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"flags: \t%x[%s]\n"
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"reserved_for_journal: \t%i\n",
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DFL(s_block_count),
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DFL(s_free_blocks),
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DFL(s_root_block),
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DF(s_blocksize),
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DF(s_oid_maxsize),
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DF(s_oid_cursize),
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DF(s_umount_state),
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rs->s_v1.s_magic,
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DF(s_fs_state),
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hash_code == TEA_HASH ? "tea" :
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(hash_code == YURA_HASH) ? "rupasov" :
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(hash_code == R5_HASH) ? "r5" :
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(hash_code == UNSET_HASH) ? "unset" : "unknown",
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DF(s_tree_height),
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DF(s_bmap_nr),
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DF(s_version), flags, (flags & reiserfs_attrs_cleared)
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? "attrs_cleared" : "", DF(s_reserved_for_journal));
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return 0;
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}
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static int show_oidmap(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
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struct reiserfs_super_block *rs = sb_info->s_rs;
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unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize);
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unsigned long total_used = 0;
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int i;
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for (i = 0; i < mapsize; ++i) {
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__u32 right;
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right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1);
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seq_printf(m, "%s: [ %x .. %x )\n",
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(i & 1) ? "free" : "used", MAP(i), right);
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if (!(i & 1)) {
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total_used += right - MAP(i);
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}
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}
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#if defined( REISERFS_USE_OIDMAPF )
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if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) {
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loff_t size = sb_info->oidmap.mapf->f_dentry->d_inode->i_size;
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total_used += size / sizeof(reiserfs_oidinterval_d_t);
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}
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#endif
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seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
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mapsize,
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mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used);
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return 0;
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}
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static int show_journal(struct seq_file *m, struct super_block *sb)
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{
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struct reiserfs_sb_info *r = REISERFS_SB(sb);
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struct reiserfs_super_block *rs = r->s_rs;
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struct journal_params *jp = &rs->s_v1.s_journal;
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char b[BDEVNAME_SIZE];
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seq_printf(m, /* on-disk fields */
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"jp_journal_1st_block: \t%i\n"
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"jp_journal_dev: \t%s[%x]\n"
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"jp_journal_size: \t%i\n"
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"jp_journal_trans_max: \t%i\n"
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"jp_journal_magic: \t%i\n"
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"jp_journal_max_batch: \t%i\n"
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"jp_journal_max_commit_age: \t%i\n"
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"jp_journal_max_trans_age: \t%i\n"
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/* incore fields */
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"j_1st_reserved_block: \t%i\n"
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"j_state: \t%li\n"
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"j_trans_id: \t%lu\n"
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"j_mount_id: \t%lu\n"
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"j_start: \t%lu\n"
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"j_len: \t%lu\n"
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"j_len_alloc: \t%lu\n"
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"j_wcount: \t%i\n"
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"j_bcount: \t%lu\n"
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"j_first_unflushed_offset: \t%lu\n"
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"j_last_flush_trans_id: \t%lu\n"
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"j_trans_start_time: \t%li\n"
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"j_list_bitmap_index: \t%i\n"
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"j_must_wait: \t%i\n"
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"j_next_full_flush: \t%i\n"
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"j_next_async_flush: \t%i\n"
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"j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n"
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/* reiserfs_proc_info_data_t.journal fields */
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"in_journal: \t%12lu\n"
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"in_journal_bitmap: \t%12lu\n"
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"in_journal_reusable: \t%12lu\n"
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"lock_journal: \t%12lu\n"
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"lock_journal_wait: \t%12lu\n"
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"journal_begin: \t%12lu\n"
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"journal_relock_writers: \t%12lu\n"
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"journal_relock_wcount: \t%12lu\n"
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"mark_dirty: \t%12lu\n"
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"mark_dirty_already: \t%12lu\n"
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"mark_dirty_notjournal: \t%12lu\n"
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"restore_prepared: \t%12lu\n"
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"prepare: \t%12lu\n"
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"prepare_retry: \t%12lu\n",
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DJP(jp_journal_1st_block),
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bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
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DJP(jp_journal_dev),
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DJP(jp_journal_size),
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DJP(jp_journal_trans_max),
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DJP(jp_journal_magic),
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DJP(jp_journal_max_batch),
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SB_JOURNAL(sb)->j_max_commit_age,
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DJP(jp_journal_max_trans_age),
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JF(j_1st_reserved_block),
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JF(j_state),
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JF(j_trans_id),
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JF(j_mount_id),
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JF(j_start),
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JF(j_len),
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JF(j_len_alloc),
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atomic_read(&r->s_journal->j_wcount),
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JF(j_bcount),
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JF(j_first_unflushed_offset),
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JF(j_last_flush_trans_id),
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JF(j_trans_start_time),
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JF(j_list_bitmap_index),
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JF(j_must_wait),
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JF(j_next_full_flush),
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JF(j_next_async_flush),
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JF(j_cnode_used),
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JF(j_cnode_free),
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SFPJ(in_journal),
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SFPJ(in_journal_bitmap),
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SFPJ(in_journal_reusable),
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SFPJ(lock_journal),
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SFPJ(lock_journal_wait),
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SFPJ(journal_being),
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SFPJ(journal_relock_writers),
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SFPJ(journal_relock_wcount),
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SFPJ(mark_dirty),
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SFPJ(mark_dirty_already),
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SFPJ(mark_dirty_notjournal),
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SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry)
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);
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return 0;
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}
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/* iterator */
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static int test_sb(struct super_block *sb, void *data)
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{
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return data == sb;
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}
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static int set_sb(struct super_block *sb, void *data)
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{
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return -ENOENT;
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}
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static void *r_start(struct seq_file *m, loff_t * pos)
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{
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struct proc_dir_entry *de = m->private;
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struct super_block *s = de->parent->data;
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loff_t l = *pos;
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if (l)
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return NULL;
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if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s)))
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return NULL;
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up_write(&s->s_umount);
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if (de->deleted) {
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deactivate_super(s);
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return NULL;
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}
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return s;
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}
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static void *r_next(struct seq_file *m, void *v, loff_t * pos)
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{
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++*pos;
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if (v)
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deactivate_super(v);
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return NULL;
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}
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static void r_stop(struct seq_file *m, void *v)
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|
{
|
|
if (v)
|
|
deactivate_super(v);
|
|
}
|
|
|
|
static int r_show(struct seq_file *m, void *v)
|
|
{
|
|
struct proc_dir_entry *de = m->private;
|
|
int (*show) (struct seq_file *, struct super_block *) = de->data;
|
|
return show(m, v);
|
|
}
|
|
|
|
static struct seq_operations r_ops = {
|
|
.start = r_start,
|
|
.next = r_next,
|
|
.stop = r_stop,
|
|
.show = r_show,
|
|
};
|
|
|
|
static int r_open(struct inode *inode, struct file *file)
|
|
{
|
|
int ret = seq_open(file, &r_ops);
|
|
|
|
if (!ret) {
|
|
struct seq_file *m = file->private_data;
|
|
m->private = PDE(inode);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations r_file_operations = {
|
|
.open = r_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
static struct proc_dir_entry *proc_info_root = NULL;
|
|
static const char proc_info_root_name[] = "fs/reiserfs";
|
|
|
|
static void add_file(struct super_block *sb, char *name,
|
|
int (*func) (struct seq_file *, struct super_block *))
|
|
{
|
|
struct proc_dir_entry *de;
|
|
de = create_proc_entry(name, 0, REISERFS_SB(sb)->procdir);
|
|
if (de) {
|
|
de->data = func;
|
|
de->proc_fops = &r_file_operations;
|
|
}
|
|
}
|
|
|
|
int reiserfs_proc_info_init(struct super_block *sb)
|
|
{
|
|
spin_lock_init(&__PINFO(sb).lock);
|
|
REISERFS_SB(sb)->procdir =
|
|
proc_mkdir(reiserfs_bdevname(sb), proc_info_root);
|
|
if (REISERFS_SB(sb)->procdir) {
|
|
REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
|
|
REISERFS_SB(sb)->procdir->data = sb;
|
|
add_file(sb, "version", show_version);
|
|
add_file(sb, "super", show_super);
|
|
add_file(sb, "per-level", show_per_level);
|
|
add_file(sb, "bitmap", show_bitmap);
|
|
add_file(sb, "on-disk-super", show_on_disk_super);
|
|
add_file(sb, "oidmap", show_oidmap);
|
|
add_file(sb, "journal", show_journal);
|
|
return 0;
|
|
}
|
|
reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s",
|
|
proc_info_root_name, reiserfs_bdevname(sb));
|
|
return 1;
|
|
}
|
|
|
|
int reiserfs_proc_info_done(struct super_block *sb)
|
|
{
|
|
struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
|
|
if (de) {
|
|
remove_proc_entry("journal", de);
|
|
remove_proc_entry("oidmap", de);
|
|
remove_proc_entry("on-disk-super", de);
|
|
remove_proc_entry("bitmap", de);
|
|
remove_proc_entry("per-level", de);
|
|
remove_proc_entry("super", de);
|
|
remove_proc_entry("version", de);
|
|
}
|
|
spin_lock(&__PINFO(sb).lock);
|
|
__PINFO(sb).exiting = 1;
|
|
spin_unlock(&__PINFO(sb).lock);
|
|
if (proc_info_root) {
|
|
remove_proc_entry(reiserfs_bdevname(sb), proc_info_root);
|
|
REISERFS_SB(sb)->procdir = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct proc_dir_entry *reiserfs_proc_register_global(char *name,
|
|
read_proc_t * func)
|
|
{
|
|
return (proc_info_root) ? create_proc_read_entry(name, 0,
|
|
proc_info_root,
|
|
func, NULL) : NULL;
|
|
}
|
|
|
|
void reiserfs_proc_unregister_global(const char *name)
|
|
{
|
|
remove_proc_entry(name, proc_info_root);
|
|
}
|
|
|
|
int reiserfs_proc_info_global_init(void)
|
|
{
|
|
if (proc_info_root == NULL) {
|
|
proc_info_root = proc_mkdir(proc_info_root_name, NULL);
|
|
if (proc_info_root) {
|
|
proc_info_root->owner = THIS_MODULE;
|
|
} else {
|
|
reiserfs_warning(NULL,
|
|
"reiserfs: cannot create /proc/%s",
|
|
proc_info_root_name);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int reiserfs_proc_info_global_done(void)
|
|
{
|
|
if (proc_info_root != NULL) {
|
|
proc_info_root = NULL;
|
|
remove_proc_entry(proc_info_root_name, NULL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* REISERFS_PROC_INFO */
|
|
#else
|
|
|
|
int reiserfs_proc_info_init(struct super_block *sb)
|
|
{
|
|
return 0;
|
|
}
|
|
int reiserfs_proc_info_done(struct super_block *sb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
struct proc_dir_entry *reiserfs_proc_register_global(char *name,
|
|
read_proc_t * func)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
void reiserfs_proc_unregister_global(const char *name)
|
|
{;
|
|
}
|
|
|
|
int reiserfs_proc_info_global_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
int reiserfs_proc_info_global_done(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int reiserfs_global_version_in_proc(char *buffer, char **start,
|
|
off_t offset,
|
|
int count, int *eof, void *data)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* REISERFS_PROC_INFO */
|
|
#endif
|
|
|
|
/*
|
|
* $Log: procfs.c,v $
|
|
* Revision 1.1.8.2 2001/07/15 17:08:42 god
|
|
* . use get_super() in procfs.c
|
|
* . remove remove_save_link() from reiserfs_do_truncate()
|
|
*
|
|
* I accept terms and conditions stated in the Legal Agreement
|
|
* (available at http://www.namesys.com/legalese.html)
|
|
*
|
|
* Revision 1.1.8.1 2001/07/11 16:48:50 god
|
|
* proc info support
|
|
*
|
|
* I accept terms and conditions stated in the Legal Agreement
|
|
* (available at http://www.namesys.com/legalese.html)
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Make Linus happy.
|
|
* Local variables:
|
|
* c-indentation-style: "K&R"
|
|
* mode-name: "LC"
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* End:
|
|
*/
|