2150edc6c5
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (57 commits) jbd2: Fix oops in jbd2_journal_init_inode() on corrupted fs ext4: Remove "extents" mount option block: Add Kconfig help which notes that ext4 needs CONFIG_LBD ext4: Make printk's consistently prefixed with "EXT4-fs: " ext4: Add sanity checks for the superblock before mounting the filesystem ext4: Add mount option to set kjournald's I/O priority jbd2: Submit writes to the journal using WRITE_SYNC jbd2: Add pid and journal device name to the "kjournald2 starting" message ext4: Add markers for better debuggability ext4: Remove code to create the journal inode ext4: provide function to release metadata pages under memory pressure ext3: provide function to release metadata pages under memory pressure add releasepage hooks to block devices which can be used by file systems ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc ext4: Init the complete page while building buddy cache ext4: Don't allow new groups to be added during block allocation ext4: mark the blocks/inode bitmap beyond end of group as used ext4: Use new buffer_head flag to check uninit group bitmaps initialization ext4: Fix the race between read_inode_bitmap() and ext4_new_inode() ext4: code cleanup ...
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*
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* linux/include/linux/ext3_fs_sb.h
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* from
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*
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* linux/include/linux/minix_fs_sb.h
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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#ifndef _LINUX_EXT3_FS_SB
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#define _LINUX_EXT3_FS_SB
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#ifdef __KERNEL__
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/blockgroup_lock.h>
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#include <linux/percpu_counter.h>
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#endif
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#include <linux/rbtree.h>
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/*
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* third extended-fs super-block data in memory
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*/
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struct ext3_sb_info {
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unsigned long s_frag_size; /* Size of a fragment in bytes */
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unsigned long s_frags_per_block;/* Number of fragments per block */
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unsigned long s_inodes_per_block;/* Number of inodes per block */
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unsigned long s_frags_per_group;/* Number of fragments in a group */
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unsigned long s_blocks_per_group;/* Number of blocks in a group */
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unsigned long s_inodes_per_group;/* Number of inodes in a group */
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unsigned long s_itb_per_group; /* Number of inode table blocks per group */
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unsigned long s_gdb_count; /* Number of group descriptor blocks */
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unsigned long s_desc_per_block; /* Number of group descriptors per block */
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unsigned long s_groups_count; /* Number of groups in the fs */
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unsigned long s_overhead_last; /* Last calculated overhead */
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unsigned long s_blocks_last; /* Last seen block count */
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struct buffer_head * s_sbh; /* Buffer containing the super block */
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struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */
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struct buffer_head ** s_group_desc;
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unsigned long s_mount_opt;
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ext3_fsblk_t s_sb_block;
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uid_t s_resuid;
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gid_t s_resgid;
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unsigned short s_mount_state;
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unsigned short s_pad;
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int s_addr_per_block_bits;
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int s_desc_per_block_bits;
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int s_inode_size;
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int s_first_ino;
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spinlock_t s_next_gen_lock;
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u32 s_next_generation;
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u32 s_hash_seed[4];
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int s_def_hash_version;
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int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */
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struct percpu_counter s_freeblocks_counter;
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struct percpu_counter s_freeinodes_counter;
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struct percpu_counter s_dirs_counter;
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struct blockgroup_lock *s_blockgroup_lock;
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/* root of the per fs reservation window tree */
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spinlock_t s_rsv_window_lock;
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struct rb_root s_rsv_window_root;
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struct ext3_reserve_window_node s_rsv_window_head;
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/* Journaling */
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struct inode * s_journal_inode;
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struct journal_s * s_journal;
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struct list_head s_orphan;
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unsigned long s_commit_interval;
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struct block_device *journal_bdev;
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#ifdef CONFIG_JBD_DEBUG
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struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */
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wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */
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#endif
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#ifdef CONFIG_QUOTA
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char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */
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int s_jquota_fmt; /* Format of quota to use */
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#endif
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};
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static inline spinlock_t *
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sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group)
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{
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return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
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}
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#endif /* _LINUX_EXT3_FS_SB */
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