> On Tue, Feb 17, 2015 at 12:47:48AM +0900, Namjae Jeon wrote: > > From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx> > > > > FALLOC_FL_INSERT_RANGE command is the opposite command of > > FALLOC_FL_COLLAPSE_RANGE that is needed for advertisers or someone who want to > > add some data in the middle of file. FALLOC_FL_INSERT_RANGE will create space > > for writing new data within a file after shifting extents to right as given > > length. and this command also has same limitation as FALLOC_FL_COLLAPSE_RANGE, > > that is block boundary and use ftruncate(2) for crosses EOF. > > > > Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx> > > Signed-off-by: Ashish Sangwan <a.sangwan@xxxxxxxxxxx> > > Cc: Brian Foster<bfoster@xxxxxxxxxx> > > --- > > fs/open.c | 8 +++++++- > > include/uapi/linux/falloc.h | 17 +++++++++++++++++ > > 2 files changed, 24 insertions(+), 1 deletion(-) > > > > diff --git a/fs/open.c b/fs/open.c > > index 813be03..762fb45 100644 > > --- a/fs/open.c > > +++ b/fs/open.c > > @@ -232,7 +232,8 @@ int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len) > > > > /* Return error if mode is not supported */ > > if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | > > - FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) > > + FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | > > + FALLOC_FL_INSERT_RANGE)) > > return -EOPNOTSUPP; > > Can we create a FALLOC_FL_SUPPORTED_MASK define in falloc.h > so that we only need to add new flags to the mask in rather than > change this code every time we add a new flag? Sure, I will do it. and share the patch with the others you gave me review points soon. Thanks for review! > > Cheers, > > Dave. > -- > Dave Chinner > david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
