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0e4f6a791b
a) count file openers correctly; i_count use was completely wrong b) use new mutex for exclusion between final close/open/truncate, to protect tailpacking logics. i_mutex use was wrong and resulted in deadlocks. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
#ifndef _REISER_FS_I
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#define _REISER_FS_I
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#include <linux/list.h>
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struct reiserfs_journal_list;
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/** bitmasks for i_flags field in reiserfs-specific part of inode */
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typedef enum {
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/** this says what format of key do all items (but stat data) of
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an object have. If this is set, that format is 3.6 otherwise
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- 3.5 */
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i_item_key_version_mask = 0x0001,
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/** If this is unset, object has 3.5 stat data, otherwise, it has
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3.6 stat data with 64bit size, 32bit nlink etc. */
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i_stat_data_version_mask = 0x0002,
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/** file might need tail packing on close */
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i_pack_on_close_mask = 0x0004,
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/** don't pack tail of file */
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i_nopack_mask = 0x0008,
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/** If those is set, "safe link" was created for this file during
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truncate or unlink. Safe link is used to avoid leakage of disk
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space on crash with some files open, but unlinked. */
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i_link_saved_unlink_mask = 0x0010,
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i_link_saved_truncate_mask = 0x0020,
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i_has_xattr_dir = 0x0040,
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i_data_log = 0x0080,
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} reiserfs_inode_flags;
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struct reiserfs_inode_info {
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__u32 i_key[4]; /* key is still 4 32 bit integers */
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/** transient inode flags that are never stored on disk. Bitmasks
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for this field are defined above. */
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__u32 i_flags;
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__u32 i_first_direct_byte; // offset of first byte stored in direct item.
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/* copy of persistent inode flags read from sd_attrs. */
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__u32 i_attrs;
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int i_prealloc_block; /* first unused block of a sequence of unused blocks */
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int i_prealloc_count; /* length of that sequence */
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struct list_head i_prealloc_list; /* per-transaction list of inodes which
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* have preallocated blocks */
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unsigned new_packing_locality:1; /* new_packig_locality is created; new blocks
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* for the contents of this directory should be
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* displaced */
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/* we use these for fsync or O_SYNC to decide which transaction
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** needs to be committed in order for this inode to be properly
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** flushed */
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unsigned int i_trans_id;
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struct reiserfs_journal_list *i_jl;
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atomic_t openers;
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struct mutex tailpack;
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#ifdef CONFIG_REISERFS_FS_XATTR
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struct rw_semaphore i_xattr_sem;
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#endif
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struct inode vfs_inode;
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};
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#endif
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