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authorBrian Foster <bfoster@redhat.com>2012-06-13 12:08:38 -0400
committerAnand Avati <avati@redhat.com>2012-07-13 09:46:09 -0700
commit32ffb79f18cbaebcbe6bba51599ca234f44675cc (patch)
tree3f7589078e618cf0f575e5ad03a67afecb50d006 /xlators/performance/io-cache
parentca4900497142127c31d0dba7a53a921200aaf790 (diff)
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 <bfoster@redhat.com> Reviewed-on: http://review.gluster.com/3584 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/performance/io-cache')
-rw-r--r--xlators/performance/io-cache/src/io-cache.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/xlators/performance/io-cache/src/io-cache.c b/xlators/performance/io-cache/src/io-cache.c
index 85e876531a5..bdaf0f1b81a 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[] = {