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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-09 15:14:28 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-09 15:14:28 -0400
commitda77005f0d64486cd760f43d9b7cc2379262a363 (patch)
treefa64dac28c47940dd730fff68f692fd5bbd73d78 /net/sunrpc/svcauth_unix.c
parent5b7a1b9f9214cb89dd164b43ca3fab7af4058e06 (diff)
SUNRPC: Remove the global temporary write buffer in net/sunrpc/cache.c
While we do want to protect against multiple concurrent readers and writers on each upcall/downcall pipe, we don't want to limit concurrent reading and writing to separate caches. This patch therefore replaces the static buffer 'write_buf', which can only be used by one writer at a time, with use of the page cache as the temporary buffer for downcalls. We still fall back to using the the old global buffer if the downcall is larger than PAGE_CACHE_SIZE, since this is apparently needed by the SPKM security context initialisation. It then replaces the use of the global 'queue_io_mutex' with the inode->i_mutex in cache_read() and cache_write(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/svcauth_unix.c')
0 files changed, 0 insertions, 0 deletions