diff options
Diffstat (limited to 'fs/exofs/super.c')
| -rw-r--r-- | fs/exofs/super.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 9f1985e857e..5ab10c3bbeb 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -1,8 +1,6 @@ /* * Copyright (C) 2005, 2006 - * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com) - * Copyright (C) 2005, 2006 - * International Business Machines + * Avishay Traeger (avishay@gmail.com) * Copyright (C) 2008, 2009 * Boaz Harrosh <bharrosh@panasas.com> * @@ -33,6 +31,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <linux/smp_lock.h> #include <linux/string.h> #include <linux/parser.h> #include <linux/vfs.h> @@ -200,20 +199,21 @@ static const struct export_operations exofs_export_ops; /* * Write the superblock to the OSD */ -static void exofs_write_super(struct super_block *sb) +int exofs_sync_fs(struct super_block *sb, int wait) { struct exofs_sb_info *sbi; struct exofs_fscb *fscb; struct osd_request *or; struct osd_obj_id obj; - int ret; + int ret = -ENOMEM; fscb = kzalloc(sizeof(struct exofs_fscb), GFP_KERNEL); if (!fscb) { EXOFS_ERR("exofs_write_super: memory allocation failed.\n"); - return; + return -ENOMEM; } + lock_super(sb); lock_kernel(); sbi = sb->s_fs_info; fscb->s_nextid = cpu_to_le64(sbi->s_nextid); @@ -246,7 +246,17 @@ out: if (or) osd_end_request(or); unlock_kernel(); + unlock_super(sb); kfree(fscb); + return ret; +} + +static void exofs_write_super(struct super_block *sb) +{ + if (!(sb->s_flags & MS_RDONLY)) + exofs_sync_fs(sb, 1); + else + sb->s_dirt = 0; } /* @@ -258,6 +268,11 @@ static void exofs_put_super(struct super_block *sb) int num_pend; struct exofs_sb_info *sbi = sb->s_fs_info; + lock_kernel(); + + if (sb->s_dirt) + exofs_write_super(sb); + /* make sure there are no pending commands */ for (num_pend = atomic_read(&sbi->s_curr_pending); num_pend > 0; num_pend = atomic_read(&sbi->s_curr_pending)) { @@ -271,6 +286,8 @@ static void exofs_put_super(struct super_block *sb) osduld_put_device(sbi->s_dev); kfree(sb->s_fs_info); sb->s_fs_info = NULL; + + unlock_kernel(); } /* @@ -484,6 +501,7 @@ static const struct super_operations exofs_sops = { .delete_inode = exofs_delete_inode, .put_super = exofs_put_super, .write_super = exofs_write_super, + .sync_fs = exofs_sync_fs, .statfs = exofs_statfs, }; |