diff options
Diffstat (limited to 'xlators/features/upcall/src/upcall-cache-invalidation.h')
| -rw-r--r-- | xlators/features/upcall/src/upcall-cache-invalidation.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/xlators/features/upcall/src/upcall-cache-invalidation.h b/xlators/features/upcall/src/upcall-cache-invalidation.h new file mode 100644 index 00000000000..758ddf1dae8 --- /dev/null +++ b/xlators/features/upcall/src/upcall-cache-invalidation.h @@ -0,0 +1,79 @@ +/* + Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef __UPCALL_CACHE_INVALIDATION_H__ +#define __UPCALL_CACHE_INVALIDATION_H__ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +/* TODO: Below macros have to be replaced with + * xlator options - Bug1200271 */ +#define ON_CACHE_INVALIDATION 0 /* disable by default */ + +/* The time period for which a client will be notified of cache_invalidation + * events post its last access */ +#define CACHE_INVALIDATION_PERIOD 60 + +/* Flags sent for cache_invalidation */ +#define UP_NLINK 0x00000001 /* update nlink */ +#define UP_MODE 0x00000002 /* update mode and ctime */ +#define UP_OWN 0x00000004 /* update mode,uid,gid and ctime */ +#define UP_SIZE 0x00000008 /* update fsize */ +#define UP_TIMES 0x00000010 /* update all times */ +#define UP_ATIME 0x00000020 /* update atime only */ +#define UP_PERM 0x00000040 /* update fields needed for + permission checking */ +#define UP_RENAME 0x00000080 /* this is a rename op - + delete the cache entry */ +#define UP_FORGET 0x00000100 /* inode_forget on server side - + invalidate the cache entry */ + +/* for fops - open, read, lk, */ +#define UP_IDEMPOTENT_FLAGS (UP_ATIME) + +/* for fop - write, truncate */ +#define UP_WRITE_FLAGS (UP_SIZE | UP_TIMES) + +/* for fop - setattr */ +#define UP_ATTR_FLAGS (UP_SIZE | UP_TIMES | UP_OWN | \ + UP_MODE | UP_PERM) +/* for fop - rename */ +#define UP_RENAME_FLAGS (UP_RENAME) + +/* to invalidate parent directory entries for fops -rename, unlink, + * rmdir, mkdir, create */ +#define UP_PARENT_DENTRY_FLAGS (UP_TIMES) + +/* for fop - unlink, link, rmdir, mkdir */ +#define UP_NLINK_FLAGS (UP_NLINK | UP_TIMES) + +#define CACHE_INVALIDATE(frame, this, client, inode, p_flags) do { \ + if (ON_CACHE_INVALIDATION) { \ + (void)upcall_cache_invalidate (frame, this, client, inode, p_flags); \ + } \ +} while (0) + +#define CACHE_INVALIDATE_DIR(frame, this, client, inode_p, p_flags) do { \ + if (ON_CACHE_INVALIDATION) { \ + dentry_t *dentry; \ + dentry_t *dentry_tmp; \ + list_for_each_entry_safe (dentry, dentry_tmp, \ + &inode_p->dentry_list, \ + inode_list) { \ + (void)upcall_cache_invalidate (frame, this, client, \ + dentry->inode, p_flags); \ + } \ + } \ +} while (0) + +#endif /* __UPCALL_CACHE_INVALIDATION_H__ */ |