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Date: Thu, 12 Aug 2021 17:39:53 -0400 From: Gabriel Krisman Bertazi <krisman@...labora.com> To: amir73il@...il.com, jack@...e.com Cc: linux-api@...r.kernel.org, linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org, khazhy@...gle.com, dhowells@...hat.com, david@...morbit.com, tytso@....edu, djwong@...nel.org, repnop@...gle.com, Gabriel Krisman Bertazi <krisman@...labora.com>, kernel@...labora.com Subject: [PATCH v6 04/21] fsnotify: Reserve mark flag bits for backends Split out the final bits of struct fsnotify_mark->flags for use by a backend. Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com> Changes since v1: - turn consts into defines (jan) --- include/linux/fsnotify_backend.h | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 1ce66748a2d2..ae1bd9f06808 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -363,6 +363,20 @@ struct fsnotify_mark_connector { struct hlist_head list; }; +enum fsnotify_mark_bits { + FSN_MARK_FL_BIT_IGNORED_SURV_MODIFY, + FSN_MARK_FL_BIT_ALIVE, + FSN_MARK_FL_BIT_ATTACHED, + FSN_MARK_PRIVATE_FLAGS, +}; + +#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY \ + (1 << FSN_MARK_FL_BIT_IGNORED_SURV_MODIFY) +#define FSNOTIFY_MARK_FLAG_ALIVE \ + (1 << FSN_MARK_FL_BIT_ALIVE) +#define FSNOTIFY_MARK_FLAG_ATTACHED \ + (1 << FSN_MARK_FL_BIT_ATTACHED) + /* * A mark is simply an object attached to an in core inode which allows an * fsnotify listener to indicate they are either no longer interested in events @@ -398,9 +412,7 @@ struct fsnotify_mark { struct fsnotify_mark_connector *connector; /* Events types to ignore [mark->lock, group->mark_mutex] */ __u32 ignored_mask; -#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x01 -#define FSNOTIFY_MARK_FLAG_ALIVE 0x02 -#define FSNOTIFY_MARK_FLAG_ATTACHED 0x04 + /* Upper bits [31:PRIVATE_FLAGS] are reserved for backend usage */ unsigned int flags; /* flags [mark->lock] */ }; -- 2.32.0
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