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authorHugh Dickins <hugh@veritas.com>2008-07-23 21:27:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:16 -0700
commitbcd78e49613c41b5bed96fa288e983876f286a59 (patch)
tree0ad2591ca2e0d46923d8ec489ef7378f1a3c0d8e /fs
parent11fa977ecde652ab324dd79c179deb52e82a8df1 (diff)
tmpfs: support aio
We have a request for tmpfs to support the AIO interface: easily done, no more than replacing the old shmem_file_read by shmem_file_aio_read, cribbed from generic_file_aio_read. (In 2.6.25 its write side was already changed to use generic_file_aio_write.) Incorporate cleanups from Andrew Morton and Harvey Harrison. Tests out fine with LTP's ltp-aiodio.sh, given hacks (not included) to support O_DIRECT. tmpfs cannot honestly support O_DIRECT: its cache-avoiding-IO nature is at odds with direct IO-avoiding-cache. Signed-off-by: Hugh Dickins <hugh@veritas.com> Tested-by: Lawrence Greenfield <leg@google.com> Cc: Christoph Rohland <hans-christoph.rohland@sap.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: Zach Brown <zach.brown@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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