logfs: rename functions starting with mtd_
We are going to re-work the MTD interface and change 'mtd->write()' to 'mtd_write()', 'mtd->read()' to 'mtd_read()' and so forth for all functions in the 'struct mtd_info' structure. However, logfs has its own 'mtd_read()', 'mtd_write()', etc functions which collide with our changes. This patch renames these logfs functions to 'logfs_mtd_read()', 'logfs_mtd_write()', etc. Additionally, to make the 'fs/logfs/dev_mtd.c' file look consistent, rename similarly all the other functions starting with 'mtd_'. Cc: Jörn Engel <joern@logfs.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Artem Bityutskiy
David Woodhouse
Родитель
cdfe5ed0f2
Коммит
48d3610268
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@ -13,7 +13,8 @@
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#define PAGE_OFS(ofs) ((ofs) & (PAGE_SIZE-1))
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static int mtd_read(struct super_block *sb, loff_t ofs, size_t len, void *buf)
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static int logfs_mtd_read(struct super_block *sb, loff_t ofs, size_t len,
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void *buf)
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{
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struct mtd_info *mtd = logfs_super(sb)->s_mtd;
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size_t retlen;
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@ -31,7 +32,8 @@ static int mtd_read(struct super_block *sb, loff_t ofs, size_t len, void *buf)
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return 0;
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}
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static int mtd_write(struct super_block *sb, loff_t ofs, size_t len, void *buf)
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static int loffs_mtd_write(struct super_block *sb, loff_t ofs, size_t len,
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void *buf)
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{
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struct logfs_super *super = logfs_super(sb);
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struct mtd_info *mtd = super->s_mtd;
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@ -60,14 +62,15 @@ static int mtd_write(struct super_block *sb, loff_t ofs, size_t len, void *buf)
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* asynchronous properties. So just to prevent the first implementor of such
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* a thing from breaking logfs in 2350, we do the usual pointless dance to
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* declare a completion variable and wait for completion before returning
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* from mtd_erase(). What an exercise in futility!
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* from logfs_mtd_erase(). What an exercise in futility!
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*/
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static void logfs_erase_callback(struct erase_info *ei)
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{
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complete((struct completion *)ei->priv);
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}
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static int mtd_erase_mapping(struct super_block *sb, loff_t ofs, size_t len)
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static int logfs_mtd_erase_mapping(struct super_block *sb, loff_t ofs,
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size_t len)
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{
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struct logfs_super *super = logfs_super(sb);
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struct address_space *mapping = super->s_mapping_inode->i_mapping;
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@ -84,7 +87,7 @@ static int mtd_erase_mapping(struct super_block *sb, loff_t ofs, size_t len)
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return 0;
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}
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static int mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
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static int logfs_mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
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int ensure_write)
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{
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struct mtd_info *mtd = logfs_super(sb)->s_mtd;
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@ -109,10 +112,10 @@ static int mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
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wait_for_completion(&complete);
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if (ei.state != MTD_ERASE_DONE)
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return -EIO;
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return mtd_erase_mapping(sb, ofs, len);
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return logfs_mtd_erase_mapping(sb, ofs, len);
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}
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static void mtd_sync(struct super_block *sb)
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static void logfs_mtd_sync(struct super_block *sb)
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{
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struct mtd_info *mtd = logfs_super(sb)->s_mtd;
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@ -120,12 +123,12 @@ static void mtd_sync(struct super_block *sb)
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mtd->sync(mtd);
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}
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static int mtd_readpage(void *_sb, struct page *page)
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static int logfs_mtd_readpage(void *_sb, struct page *page)
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{
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struct super_block *sb = _sb;
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int err;
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err = mtd_read(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
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err = logfs_mtd_read(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
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page_address(page));
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if (err == -EUCLEAN || err == -EBADMSG) {
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/* -EBADMSG happens regularly on power failures */
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@ -143,11 +146,11 @@ static int mtd_readpage(void *_sb, struct page *page)
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return err;
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}
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static struct page *mtd_find_first_sb(struct super_block *sb, u64 *ofs)
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static struct page *logfs_mtd_find_first_sb(struct super_block *sb, u64 *ofs)
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{
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struct logfs_super *super = logfs_super(sb);
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struct address_space *mapping = super->s_mapping_inode->i_mapping;
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filler_t *filler = mtd_readpage;
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filler_t *filler = logfs_mtd_readpage;
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struct mtd_info *mtd = super->s_mtd;
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if (!mtd->block_isbad)
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@ -163,11 +166,11 @@ static struct page *mtd_find_first_sb(struct super_block *sb, u64 *ofs)
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return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);
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}
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static struct page *mtd_find_last_sb(struct super_block *sb, u64 *ofs)
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static struct page *logfs_mtd_find_last_sb(struct super_block *sb, u64 *ofs)
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{
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struct logfs_super *super = logfs_super(sb);
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struct address_space *mapping = super->s_mapping_inode->i_mapping;
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filler_t *filler = mtd_readpage;
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filler_t *filler = logfs_mtd_readpage;
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struct mtd_info *mtd = super->s_mtd;
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if (!mtd->block_isbad)
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@ -184,7 +187,7 @@ static struct page *mtd_find_last_sb(struct super_block *sb, u64 *ofs)
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return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);
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}
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static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
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static int __logfs_mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
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size_t nr_pages)
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{
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struct logfs_super *super = logfs_super(sb);
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@ -196,8 +199,8 @@ static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
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page = find_lock_page(mapping, index + i);
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BUG_ON(!page);
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err = mtd_write(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
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page_address(page));
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err = loffs_mtd_write(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
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page_address(page));
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unlock_page(page);
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page_cache_release(page);
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if (err)
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@ -206,7 +209,7 @@ static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
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return 0;
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}
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static void mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
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static void logfs_mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
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{
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struct logfs_super *super = logfs_super(sb);
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int head;
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@ -227,15 +230,15 @@ static void mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
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len += head;
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}
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len = PAGE_ALIGN(len);
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__mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
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__logfs_mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
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}
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static void mtd_put_device(struct logfs_super *s)
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static void logfs_mtd_put_device(struct logfs_super *s)
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{
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put_mtd_device(s->s_mtd);
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}
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static int mtd_can_write_buf(struct super_block *sb, u64 ofs)
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static int logfs_mtd_can_write_buf(struct super_block *sb, u64 ofs)
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{
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struct logfs_super *super = logfs_super(sb);
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void *buf;
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@ -244,7 +247,7 @@ static int mtd_can_write_buf(struct super_block *sb, u64 ofs)
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buf = kmalloc(super->s_writesize, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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err = mtd_read(sb, ofs, super->s_writesize, buf);
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err = logfs_mtd_read(sb, ofs, super->s_writesize, buf);
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if (err)
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goto out;
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if (memchr_inv(buf, 0xff, super->s_writesize))
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@ -255,14 +258,14 @@ out:
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}
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static const struct logfs_device_ops mtd_devops = {
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.find_first_sb = mtd_find_first_sb,
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.find_last_sb = mtd_find_last_sb,
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.readpage = mtd_readpage,
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.writeseg = mtd_writeseg,
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.erase = mtd_erase,
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.can_write_buf = mtd_can_write_buf,
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.sync = mtd_sync,
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.put_device = mtd_put_device,
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.find_first_sb = logfs_mtd_find_first_sb,
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.find_last_sb = logfs_mtd_find_last_sb,
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.readpage = logfs_mtd_readpage,
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.writeseg = logfs_mtd_writeseg,
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.erase = logfs_mtd_erase,
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.can_write_buf = logfs_mtd_can_write_buf,
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.sync = logfs_mtd_sync,
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.put_device = logfs_mtd_put_device,
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};
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int logfs_get_sb_mtd(struct logfs_super *s, int mtdnr)
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