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exofs: add bdi backing to mount session

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This ensures that dirty data gets flushed properly.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2010-04-22 12:26:04 +02:00
parent 9df9c8b930
commit b3d0ab7e60
2 changed files with 10 additions and 0 deletions
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2
fs/exofs/exofs.h
View file

@ -35,6 +35,7 @@
#include <linux/fs.h> #include <linux/fs.h>
#include <linux/time.h> #include <linux/time.h>
#include <linux/backing-dev.h>
#include "common.h" #include "common.h"
/* FIXME: Remove once pnfs hits mainline /* FIXME: Remove once pnfs hits mainline
@ -92,6 +93,7 @@ struct exofs_sb_info {
struct exofs_layout layout; /* Default files layout, struct exofs_layout layout; /* Default files layout,
* contains the variable osd_dev * contains the variable osd_dev
* array. Keep last */ * array. Keep last */
struct backing_dev_info bdi;
struct osd_dev *_min_one_dev[1]; /* Place holder for one dev */ struct osd_dev *_min_one_dev[1]; /* Place holder for one dev */
}; };

8
fs/exofs/super.c
View file

@ -302,6 +302,7 @@ static void exofs_put_super(struct super_block *sb)
_exofs_print_device("Unmounting", NULL, sbi->layout.s_ods[0], _exofs_print_device("Unmounting", NULL, sbi->layout.s_ods[0],
sbi->layout.s_pid); sbi->layout.s_pid);
bdi_destroy(&sbi->bdi);
exofs_free_sbi(sbi); exofs_free_sbi(sbi);
sb->s_fs_info = NULL; sb->s_fs_info = NULL;
} }
@ -546,6 +547,10 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi) if (!sbi)
return -ENOMEM; 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 */ /* use mount options to fill superblock */
od = osduld_path_lookup(opts->dev_name); od = osduld_path_lookup(opts->dev_name);
if (IS_ERR(od)) { 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 */ /* set up operation vectors */
sb->s_bdi = &sbi->bdi;
sb->s_fs_info = sbi; sb->s_fs_info = sbi;
sb->s_op = &exofs_sops; sb->s_op = &exofs_sops;
sb->s_export_op = &exofs_export_ops; 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; return 0;
free_sbi: free_sbi:
bdi_destroy(&sbi->bdi);
free_bdi:
EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n", EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
opts->dev_name, sbi->layout.s_pid, ret); opts->dev_name, sbi->layout.s_pid, ret);
exofs_free_sbi(sbi); exofs_free_sbi(sbi);