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With the old aops, writing to a tmpfs file had to use its own special method: the generic method would pass in a fresh page to prepare_write when the right page was there in swapcache - which was inefficient to handle, even once we'd concocted the code to handle it. With the new aops, the generic method uses shmem_write_end, which lets shmem_getpage find the right page: so now abandon shmem_file_write in favour of the generic method. Yes, that does do several things that tmpfs hasn't really needed (notably balance_dirty_pages_ratelimited, which ramfs also calls); but more use of common code is preferable. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hugh Dickins
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Linus Torvalds
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Feb 5, 2008
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