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author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-08-09 15:14:28 -0400 |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-08-09 15:14:28 -0400 |
commit | da77005f0d64486cd760f43d9b7cc2379262a363 (patch) | |
tree | fa64dac28c47940dd730fff68f692fd5bbd73d78 /net/sunrpc/auth_gss | |
parent | 5b7a1b9f9214cb89dd164b43ca3fab7af4058e06 (diff) | |
download | kernel_samsung_tuna-da77005f0d64486cd760f43d9b7cc2379262a363.zip kernel_samsung_tuna-da77005f0d64486cd760f43d9b7cc2379262a363.tar.gz kernel_samsung_tuna-da77005f0d64486cd760f43d9b7cc2379262a363.tar.bz2 |
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/auth_gss')
0 files changed, 0 insertions, 0 deletions