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authorChristoph Hellwig <hch@tuxera.com>2010-11-23 14:38:21 +0100
committerChristoph Hellwig <hch@lst.de>2010-11-23 14:38:21 +0100
commit34a2d313c51f47cae50ccb89f4196462665f2c48 (patch)
treec641c7bd24b9e343139a3e1c4d81e51822114cd9 /fs/hfsplus/super.c
parente34947056076ca5467ee8256d2d9cbc594a79b37 (diff)
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hfsplus: flush disk caches in sync and fsync
Flush the disk cache in fsync and sync to make sure data actually is on disk on completion of these system calls. There is a nobarrier mount option to disable this behaviour. It's slightly misnamed now that barrier actually are gone, but it matches the name used by all major filesystems. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Diffstat (limited to 'fs/hfsplus/super.c')
-rw-r--r--fs/hfsplus/super.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 0366501..154478c 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pagemap.h>
+#include <linux/blkdev.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/vfs.h>
@@ -212,6 +213,10 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
out:
mutex_unlock(&sbi->alloc_mutex);
mutex_unlock(&sbi->vh_mutex);
+
+ if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
+ blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
+
return error;
}
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