forked from luck/tmp_suning_uos_patched
281627df3e
Do not use unlogged metadata updates and the VFS dirty bit for updating the file size after writeback. In addition to causing various problems with updates getting delayed for far too long this also drags in the unscalable VFS dirty tracking, and is one of the few remaining unlogged metadata updates. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*
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* Copyright (c) 2005-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_AOPS_H__
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#define __XFS_AOPS_H__
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extern mempool_t *xfs_ioend_pool;
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/*
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* Types of I/O for bmap clustering and I/O completion tracking.
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*/
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enum {
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IO_DIRECT = 0, /* special case for direct I/O ioends */
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IO_DELALLOC, /* mapping covers delalloc region */
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IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */
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IO_OVERWRITE, /* mapping covers already allocated extent */
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};
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#define XFS_IO_TYPES \
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{ 0, "" }, \
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{ IO_DELALLOC, "delalloc" }, \
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{ IO_UNWRITTEN, "unwritten" }, \
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{ IO_OVERWRITE, "overwrite" }
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/*
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* xfs_ioend struct manages large extent writes for XFS.
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* It can manage several multi-page bio's at once.
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*/
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typedef struct xfs_ioend {
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struct xfs_ioend *io_list; /* next ioend in chain */
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unsigned int io_type; /* delalloc / unwritten */
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int io_error; /* I/O error code */
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atomic_t io_remaining; /* hold count */
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unsigned int io_isasync : 1; /* needs aio_complete */
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unsigned int io_isdirect : 1;/* direct I/O */
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struct inode *io_inode; /* file being written to */
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struct buffer_head *io_buffer_head;/* buffer linked list head */
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struct buffer_head *io_buffer_tail;/* buffer linked list tail */
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size_t io_size; /* size of the extent */
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xfs_off_t io_offset; /* offset in the file */
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struct work_struct io_work; /* xfsdatad work queue */
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struct xfs_trans *io_append_trans;/* xact. for size update */
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struct kiocb *io_iocb;
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int io_result;
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} xfs_ioend_t;
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extern const struct address_space_operations xfs_address_space_operations;
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extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);
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extern void xfs_count_page_state(struct page *, int *, int *);
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#endif /* __XFS_AOPS_H__ */
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