[XFS] Add degframentation exclusion support

SGI-PV: 953061
SGI-Modid: xfs-linux-melb:xfs-kern:25986a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

4 files changed, 9 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/linux-2.6/xfs_globals.c
index 6e8085f34635..6c162c3dde7e 100644
--- a/fs/xfs/linux-2.6/xfs_globals.c
+++ b/fs/xfs/linux-2.6/xfs_globals.c
@@ -45,6 +45,7 @@ xfs_param_t xfs_params = {
         .xfs_buf_age    = {     1*100,          15*100,         7200*100},
         .inherit_nosym  = {     0,              0,              1       },
         .rotorstep      = {     1,              1,              255     },
+        .inherit_nodfrg = {     0,              1,              1       },
 };
 
 /*
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index e9fe43d74768..7d15cb910275 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -134,6 +134,7 @@ BUFFER_FNS(PrivateStart, unwritten);
 #define xfs_buf_age_centisecs   xfs_params.xfs_buf_age.val
 #define xfs_inherit_nosymlinks  xfs_params.inherit_nosym.val
 #define xfs_rotorstep           xfs_params.rotorstep.val
+#define xfs_inherit_nodefrag    xfs_params.inherit_nodfrg.val
 
 #ifndef raw_smp_processor_id
 #define raw_smp_processor_id()  smp_processor_id()
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
index 7079cc837210..4af97682bec8 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/linux-2.6/xfs_sysctl.c
@@ -120,6 +120,11 @@ STATIC ctl_table xfs_table[] = {
         &sysctl_intvec, NULL,
         &xfs_params.rotorstep.min, &xfs_params.rotorstep.max},
 
+        {XFS_INHERIT_NODFRG, "inherit_nodefrag", &xfs_params.inherit_nodfrg.val,
+        sizeof(int), 0644, NULL, &proc_dointvec_minmax,
+        &sysctl_intvec, NULL,
+        &xfs_params.inherit_nodfrg.min, &xfs_params.inherit_nodfrg.max},
+
         /* please keep this the last entry */
 #ifdef CONFIG_PROC_FS
         {XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.h b/fs/xfs/linux-2.6/xfs_sysctl.h
index bc8c11f13722..a631fb8cc5ac 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.h
+++ b/fs/xfs/linux-2.6/xfs_sysctl.h
@@ -46,6 +46,7 @@ typedef struct xfs_param {
         xfs_sysctl_val_t xfs_buf_age;   /* Metadata buffer age before flush. */
         xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */
         xfs_sysctl_val_t rotorstep;     /* inode32 AG rotoring control knob */
+        xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
 } xfs_param_t;
 
 /*
@@ -84,6 +85,7 @@ enum {
         /* XFS_IO_BYPASS = 18 */
         XFS_INHERIT_NOSYM = 19,
         XFS_ROTORSTEP = 20,
+        XFS_INHERIT_NODFRG = 21,
 };
 
 extern xfs_param_t      xfs_params;