jfs_metapage.h (e5451c8f8330e03ad3cfa16048b4daf961af434f) jfs_metapage.h (09cbfeaf1a5a67bfb3201e0c83c810cecb2efa5a)
1/*
2 * Copyright (C) International Business Machines Corp., 2000-2002
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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101}
102
103static inline void metapage_nohomeok(struct metapage *mp)
104{
105 struct page *page = mp->page;
106 lock_page(page);
107 if (!mp->nohomeok++) {
108 mark_metapage_dirty(mp);
1/*
2 * Copyright (C) International Business Machines Corp., 2000-2002
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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101}
102
103static inline void metapage_nohomeok(struct metapage *mp)
104{
105 struct page *page = mp->page;
106 lock_page(page);
107 if (!mp->nohomeok++) {
108 mark_metapage_dirty(mp);
109 page_cache_get(page);
109 get_page(page);
110 wait_on_page_writeback(page);
111 }
112 unlock_page(page);
113}
114
115/*
116 * This serializes access to mp->lsn when metapages are added to logsynclist
117 * without setting nohomeok. i.e. updating imap & dmap

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123}
124
125/*
126 * This is called when already holding the metapage
127 */
128static inline void _metapage_homeok(struct metapage *mp)
129{
130 if (!--mp->nohomeok)
110 wait_on_page_writeback(page);
111 }
112 unlock_page(page);
113}
114
115/*
116 * This serializes access to mp->lsn when metapages are added to logsynclist
117 * without setting nohomeok. i.e. updating imap & dmap

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123}
124
125/*
126 * This is called when already holding the metapage
127 */
128static inline void _metapage_homeok(struct metapage *mp)
129{
130 if (!--mp->nohomeok)
131 page_cache_release(mp->page);
131 put_page(mp->page);
132}
133
134static inline void metapage_homeok(struct metapage *mp)
135{
136 hold_metapage(mp);
137 _metapage_homeok(mp);
138 put_metapage(mp);
139}

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133
134static inline void metapage_homeok(struct metapage *mp)
135{
136 hold_metapage(mp);
137 _metapage_homeok(mp);
138 put_metapage(mp);
139}

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