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GFS2: Add "top dir" flag support

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This patch adds support for the "top dir" flag. Currently this is unused
but a subsequent patch is planned which will add support for the
Orlov allocation policy when allocating subdirectories in a parent
with this flag set.

In order to ensure backward compatible behaviour, mkfs.gfs2 does
not currently tag the root directory with this flag, it must always be
set manually.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2012-05-28 15:26:56 +01:00 • committed by Steven Whitehouse
parent 5407e24229
commit 23d0bb834e
2 changed files with 7 additions and 1 deletions
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4
include/linux/gfs2_ondisk.h
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@ -214,6 +214,7 @@ enum {
gfs2fl_NoAtime = 7,
gfs2fl_Sync = 8,
gfs2fl_System = 9,
gfs2fl_TopLevel = 10,
gfs2fl_TruncInProg = 29,
gfs2fl_InheritDirectio = 30,
gfs2fl_InheritJdata = 31,
@ -230,8 +231,9 @@ enum {
#define GFS2_DIF_NOATIME 0x00000080
#define GFS2_DIF_SYNC 0x00000100
#define GFS2_DIF_SYSTEM 0x00000200 /* New in gfs2 */
#define GFS2_DIF_TOPDIR 0x00000400 /* New in gfs2 */
#define GFS2_DIF_TRUNC_IN_PROG 0x20000000 /* New in gfs2 */
#define GFS2_DIF_INHERIT_DIRECTIO 0x40000000
#define GFS2_DIF_INHERIT_DIRECTIO 0x40000000 /* only in gfs1 */
#define GFS2_DIF_INHERIT_JDATA 0x80000000
struct gfs2_dinode {