From 32ffb79f18cbaebcbe6bba51599ca234f44675cc Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Wed, 13 Jun 2012 12:08:38 -0400 Subject: fuse/md-cache: add support for the 'fopen-keep-cache' mount option fopen-keep-cache disables unconditional page-cache invalidations on file open in fuse (via FOPEN_KEEP_CACHE) and replaces that behavior with detection of remote changes and explicit invalidations from mount/fuse. This option improves local caching through the page cache and native client. This change defines a new 'invalidate' translator callback to identify when an inode's cache mapping has been determined to be invalid. md-cache implements the policy to detect and invoke inode invalidations. fuse-bridge and io-cache implement invalidate handlers to invalidate the respective caches (page cache in the case of fuse). BUG: 833564 Change-Id: I99818da5777eaf06276c1c0b194669f5bab92d48 Signed-off-by: Brian Foster Reviewed-on: http://review.gluster.com/3584 Tested-by: Gluster Build System Reviewed-by: Anand Avati --- xlators/performance/io-cache/src/io-cache.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'xlators/performance/io-cache/src/io-cache.c') diff --git a/xlators/performance/io-cache/src/io-cache.c b/xlators/performance/io-cache/src/io-cache.c index 85e876531..bdaf0f1b8 100644 --- a/xlators/performance/io-cache/src/io-cache.c +++ b/xlators/performance/io-cache/src/io-cache.c @@ -313,6 +313,18 @@ ioc_forget (xlator_t *this, inode_t *inode) return 0; } +static int32_t +ioc_invalidate(xlator_t *this, inode_t *inode) +{ + ioc_inode_t *ioc_inode = NULL; + + inode_ctx_get(inode, this, (uint64_t *) &ioc_inode); + + if (ioc_inode) + ioc_inode_flush(ioc_inode); + + return 0; +} /* * ioc_cache_validate_cbk - @@ -1977,7 +1989,8 @@ struct xlator_dumpops dumpops = { struct xlator_cbks cbks = { .forget = ioc_forget, - .release = ioc_release + .release = ioc_release, + .invalidate = ioc_invalidate, }; struct volume_options options[] = { -- cgit