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An ioctl is needed to set compress flag (i.e. clear BTRFS_INODE_NOCOMPRESS flag) on per file basis. This patch adds that. Introduces a generic function to be used by subsequent patches. Signed-off-by: Amit Gud <gud@ksu.edu> Index: newformat2/fs/btrfs/ioctl.c =================================================================== --- newformat2.orig/fs/btrfs/ioctl.c +++ newformat2/fs/btrfs/ioctl.c @@ -1240,6 +1240,54 @@ out: return ret; } +/* Ioctl function to set or clear a flag on the file. */ +static long btrfs_ioctl_inode_flag(struc...

Hi, I try to format a USB memory with a Btrfs. I can format it with mkfs.btrfs without problems. But; when I try to mount it, it fails to mount with the below error messages. But the USB memory works fine with other filesystems (ext4, XFS etc.). So, the hardware is not faulty. tarkane@tarkane:~$ sudo mkfs.btrfs -d single -n 4096 /dev/sdb1 WARNING! - Btrfs v0.18-26-g0030f1d IS EXPERIMENTAL

...the new code just for btrfs-progs, and run btrfsck. It will print an error if it finds any of the unsupported disk items. I didn''t want people to accidentally pull the new new format on top of the old new format without reading this email, so I gave the new new format a new branch name (newformat2). For the kernel (still at 2.6.30-rc7, rebased today): git pull git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git newformat2 For the progs (also rebased today): git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs-unstable.git newformat2 I deleted the newformat...

Hi. I got following BUG trace. This is violation of BUG_ON(!buffer_locked(bh)) check on submit_bh() function. In write_dev_supers(), if wait parameter is set and buffer_uptodate() check is negative, submit_bh() is executed and hit above BUG_ON. So I fixed this issue. Thanks. Jun 9 00:41:32 dl580 kernel: ------------[ cut here ]------------ Jun 9 00:41:32 dl580 kernel: kernel BUG at