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authorJens Axboe <jens.axboe@oracle.com>2010-04-22 12:26:04 +0200
committerJens Axboe <jens.axboe@oracle.com>2010-04-22 12:26:04 +0200
commitb3d0ab7e60d1865bb6f6a79a77aaba22f2543236 (patch)
treebd770d63b01998b8ad1ee0f9fc463465b3586e8a
parent9df9c8b930156a2f9ce2b2ae66acb14bee2663f5 (diff)
exofs: add bdi backing to mount session
This ensures that dirty data gets flushed properly. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
-rw-r--r--fs/exofs/exofs.h2
-rw-r--r--fs/exofs/super.c8
2 files changed, 10 insertions, 0 deletions
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 8442e353309f..54373278a353 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -35,6 +35,7 @@
#include <linux/fs.h>
#include <linux/time.h>
+#include <linux/backing-dev.h>
#include "common.h"
/* FIXME: Remove once pnfs hits mainline
@@ -92,6 +93,7 @@ struct exofs_sb_info {
struct exofs_layout layout; /* Default files layout,
* contains the variable osd_dev
* array. Keep last */
+ struct backing_dev_info bdi;
struct osd_dev *_min_one_dev[1]; /* Place holder for one dev */
};
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 18e57ea1e5b4..03149b9a5178 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -302,6 +302,7 @@ static void exofs_put_super(struct super_block *sb)
_exofs_print_device("Unmounting", NULL, sbi->layout.s_ods[0],
sbi->layout.s_pid);
+ bdi_destroy(&sbi->bdi);
exofs_free_sbi(sbi);
sb->s_fs_info = NULL;
}
@@ -546,6 +547,10 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi)
return -ENOMEM;
+ ret = bdi_setup_and_register(&sbi->bdi, "exofs", BDI_CAP_MAP_COPY);
+ if (ret)
+ goto free_bdi;
+
/* use mount options to fill superblock */
od = osduld_path_lookup(opts->dev_name);
if (IS_ERR(od)) {
@@ -612,6 +617,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
}
/* set up operation vectors */
+ sb->s_bdi = &sbi->bdi;
sb->s_fs_info = sbi;
sb->s_op = &exofs_sops;
sb->s_export_op = &exofs_export_ops;
@@ -643,6 +649,8 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
return 0;
free_sbi:
+ bdi_destroy(&sbi->bdi);
+free_bdi:
EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
opts->dev_name, sbi->layout.s_pid, ret);
exofs_free_sbi(sbi);