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Hugh Dickins
3f31d07571
Now tmpfs supports hole-punching via fallocate(), switch madvise_remove() to use do_fallocate() instead of vmtruncate_range(): which extends madvise(,,MADV_REMOVE) support from tmpfs to ext4, ocfs2 and xfs. There is one more user of vmtruncate_range() in our tree, staging/android's ashmem_shrink(): convert it to use do_fallocate() too (but if its unpinned areas are already unmapped - I don't know - then it would do better to use shmem_truncate_range() directly). Based-on-patch-by: Cong Wang <[email protected]> Signed-off-by: Hugh Dickins <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Al Viro <[email protected]> Cc: Colin Cross <[email protected]> Cc: John Stultz <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Joel Becker <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Ben Myers <[email protected]> Cc: Michael Kerrisk <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>