btrfs/file.c: remove an unsed varialbe first_index
The commit b37392ea86
("Btrfs: cleanup unnecessary parameter
and variant of prepare_pages()") makes it redundant.
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Shan Hai <haishan.bai@hotmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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@ -1469,7 +1469,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
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u64 release_bytes = 0;
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u64 lockstart;
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u64 lockend;
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unsigned long first_index;
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size_t num_written = 0;
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int nrptrs;
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int ret = 0;
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@ -1485,8 +1484,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
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if (!pages)
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return -ENOMEM;
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first_index = pos >> PAGE_CACHE_SHIFT;
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while (iov_iter_count(i) > 0) {
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size_t offset = pos & (PAGE_CACHE_SIZE - 1);
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size_t write_bytes = min(iov_iter_count(i),
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