add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/hpfs/file.c
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@@ -9,6 +9,7 @@
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 #include "hpfs_fn.h"
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 #include <linux/mpage.h>
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+#include <linux/fiemap.h>
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 #define BLOCKS(size) (((size) + 511) >> 9)
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@@ -125,10 +126,9 @@
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 	return block_write_full_page(page, hpfs_get_block, wbc);
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 }
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-static int hpfs_readpages(struct file *file, struct address_space *mapping,
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-			  struct list_head *pages, unsigned nr_pages)
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+static void hpfs_readahead(struct readahead_control *rac)
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 {
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-	return mpage_readpages(mapping, pages, nr_pages, hpfs_get_block);
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+	mpage_readahead(rac, hpfs_get_block);
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 }
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 static int hpfs_writepages(struct address_space *mapping,
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@@ -198,7 +198,7 @@
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 const struct address_space_operations hpfs_aops = {
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 	.readpage = hpfs_readpage,
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 	.writepage = hpfs_writepage,
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-	.readpages = hpfs_readpages,
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+	.readahead = hpfs_readahead,
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 	.writepages = hpfs_writepages,
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 	.write_begin = hpfs_write_begin,
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 	.write_end = hpfs_write_end,
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@@ -215,6 +215,7 @@
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 	.fsync		= hpfs_file_fsync,
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 	.splice_read	= generic_file_splice_read,
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 	.unlocked_ioctl	= hpfs_ioctl,
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+	.compat_ioctl	= compat_ptr_ioctl,
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 };
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 const struct inode_operations hpfs_file_iops =