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With the traditional page-based writes, blocks are allocated separately for each page written to. With iomap writes, we can allocate a lot more blocks at once, with a fraction of the allocation overhead for each page. Split calculating the number of blocks that can be allocated at a given position (gfs2_alloc_size) off from gfs2_iomap_alloc: that size determines the number of blocks to allocate and reserve in the journal. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: Bob Peterson <rpeterso@redhat.com>
19 lines
587 B
C
19 lines
587 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 Red Hat, Inc. All rights reserved.
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*/
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#ifndef __AOPS_DOT_H__
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#define __AOPS_DOT_H__
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#include "incore.h"
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extern int stuffed_readpage(struct gfs2_inode *ip, struct page *page);
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extern int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
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loff_t pos, unsigned copied,
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struct page *page);
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extern void adjust_fs_space(struct inode *inode);
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extern void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,
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unsigned int from, unsigned int len);
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#endif /* __AOPS_DOT_H__ */
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