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 --- libglusterfs/src/xlator.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'libglusterfs/src/xlator.h') diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h index 2fce7dc47..5162d20e5 100644 --- a/libglusterfs/src/xlator.h +++ b/libglusterfs/src/xlator.h @@ -730,10 +730,13 @@ typedef int32_t (*cbk_forget_t) (xlator_t *this, typedef int32_t (*cbk_release_t) (xlator_t *this, fd_t *fd); +typedef int32_t (*cbk_invalidate_t)(xlator_t *this, inode_t *inode); + struct xlator_cbks { cbk_forget_t forget; cbk_release_t release; cbk_release_t releasedir; + cbk_invalidate_t invalidate; }; typedef int32_t (*dumpop_priv_t) (xlator_t *this); -- cgit