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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2006-10-30 22:07:04 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-31 08:06:59 -0800
commit2a9d32f682b2b4928dcd4680bc99e98a3d096816 (patch)
treee9f15ccbb96a77734a6d14ba4d920b8647430abe /arch/um
parent97d88ac83540f9ba9536326c30db4815c5b9169b (diff)
[PATCH] uml ubd driver: document some struct fields
Add documentation about some fields in struct ubd, whose meaning is non-obvious due to struct names (should change names altogether, I agree). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/drivers/ubd_kern.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 54d24738280..e104f59ec51 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -150,8 +150,9 @@ static struct gendisk *fake_gendisk[MAX_DEV];
static struct openflags global_openflags = OPEN_FLAGS;
struct cow {
- /* This is the backing file, actually */
+ /* backing file name */
char *file;
+ /* backing file fd */
int fd;
unsigned long *bitmap;
unsigned long bitmap_len;
@@ -160,6 +161,8 @@ struct cow {
};
struct ubd {
+ /* name (and fd, below) of the file opened for writing, either the
+ * backing or the cow file. */
char *file;
int count;
int fd;