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[1/6] fs: add hole punching to fallocate

Message ID 1289248327-16308-1-git-send-email-josef@redhat.com
State Not Applicable, archived
Headers show

Commit Message

Josef Bacik Nov. 8, 2010, 8:32 p.m. UTC
None
diff mbox

Patch

diff --git a/fs/open.c b/fs/open.c
index 4197b9e..ab8dedf 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -223,7 +223,7 @@  int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 		return -EINVAL;
 
 	/* Return error if mode is not supported */
-	if (mode && !(mode & FALLOC_FL_KEEP_SIZE))
+	if (mode && (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)))
 		return -EOPNOTSUPP;
 
 	if (!(file->f_mode & FMODE_WRITE))
diff --git a/include/linux/falloc.h b/include/linux/falloc.h
index 3c15510..851cba2 100644
--- a/include/linux/falloc.h
+++ b/include/linux/falloc.h
@@ -2,6 +2,7 @@ 
 #define _FALLOC_H_
 
 #define FALLOC_FL_KEEP_SIZE	0x01 /* default is extend size */
+#define FALLOC_FL_PUNCH_HOLE	0X02 /* de-allocates range */
 
 #ifdef __KERNEL__