[XFS] Some tweaks to the additional inode flags, suggested by Ethan Benson

SGI Modid: 2.5.x-xfs:slinx:158493a

fs/xfs/linux/xfs_globals.c

@@ -61,6 +61,7 @@ xfs_param_t xfs_params = {
 	.stats_clear	= {	0,	0,	1	},
 	.inherit_sync	= {	0,	1,	1	},
 	.inherit_nodump	= {	0,	1,	1	},
+	.inherit_noatim = {	0,	1,	1	},
 };
 
 /*

fs/xfs/linux/xfs_linux.h

@@ -98,6 +98,7 @@ static inline void set_buffer_unwritten_io(struct buffer_head *bh)
 #define xfs_stats_clear		xfs_params.stats_clear.val
 #define xfs_inherit_sync	xfs_params.inherit_sync.val
 #define xfs_inherit_nodump	xfs_params.inherit_nodump.val
+#define xfs_inherit_noatime	xfs_params.inherit_noatim.val
 
 #define NBPP		PAGE_SIZE
 #define DPPSHFT		(PAGE_SHIFT - 9)

fs/xfs/linux/xfs_stats.c

@@ -80,6 +80,7 @@ xfs_read_xfsstats(
 			xfsstats.xs_xstrat_bytes,
 			xfsstats.xs_write_bytes,
 			xfsstats.xs_read_bytes);
+	len += sprintf(buffer + len, "debug %u\n", defined(XFSDEBUG));
 
 	if (offset >= len) {
 		*start = buffer;

fs/xfs/linux/xfs_sysctl.c

@@ -107,6 +107,11 @@ STATIC ctl_table xfs_table[] = {
 	&sysctl_intvec, NULL,
 	&xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},
 
+	{XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
+	sizeof(ulong), 0644, NULL, &proc_doulongvec_minmax,
+	&sysctl_intvec, NULL,
+	&xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
+
 	/* please keep this the last entry */
 #ifdef CONFIG_PROC_FS
 	{XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,

fs/xfs/linux/xfs_sysctl.h

@@ -57,6 +57,7 @@ typedef struct xfs_param {
 	xfs_sysctl_val_t stats_clear;	/* Reset all XFS statistics to zero. */
 	xfs_sysctl_val_t inherit_sync;	/* Inherit the "sync" inode flag. */
 	xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */
+	xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */
 } xfs_param_t;
 
 /*
@@ -84,6 +85,7 @@ enum {
 	XFS_STATS_CLEAR = 12,
 	XFS_INHERIT_SYNC = 13,
 	XFS_INHERIT_NODUMP = 14,
+	XFS_INHERIT_NOATIME = 15,
 };
 
 extern xfs_param_t	xfs_params;

fs/xfs/xfs_inode.c

@@ -1197,8 +1197,6 @@ xfs_ialloc(
 	ip->i_d.di_dmevmask = 0;
 	ip->i_d.di_dmstate = 0;
 	ip->i_d.di_flags = 0;
-	if ((pip->i_d.di_flags & XFS_DIFLAG_NODUMP) && xfs_inherit_nodump)
-		ip->i_d.di_flags |= XFS_DIFLAG_NODUMP;
 	flags = XFS_ILOG_CORE;
 	switch (mode & IFMT) {
 	case IFIFO:
@@ -1212,8 +1210,18 @@ xfs_ialloc(
 		break;
 	case IFREG:
 	case IFDIR:
-		if ((pip->i_d.di_flags & XFS_DIFLAG_SYNC) && xfs_inherit_sync)
-			ip->i_d.di_flags |= XFS_DIFLAG_SYNC;
+		if (pip->i_d.di_flags &
+		    (XFS_DIFLAG_NOATIME|XFS_DIFLAG_NODUMP|XFS_DIFLAG_SYNC)) {
+			if ((pip->i_d.di_flags & XFS_DIFLAG_NOATIME) &&
+			    xfs_inherit_noatime)
+				ip->i_d.di_flags |= XFS_DIFLAG_NOATIME;
+			if ((pip->i_d.di_flags & XFS_DIFLAG_NODUMP) &&
+			    xfs_inherit_nodump)
+				ip->i_d.di_flags |= XFS_DIFLAG_NODUMP;
+			if ((pip->i_d.di_flags & XFS_DIFLAG_SYNC) &&
+			    xfs_inherit_sync)
+				ip->i_d.di_flags |= XFS_DIFLAG_SYNC;
+		}
 	case IFLNK:
 		ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS;
 		ip->i_df.if_flags = XFS_IFEXTENTS;