Re: [PATCH 1/1] btrfs: btrfs_calc_avail_data_space cope with no read/write devices V2

2011-11-28 Thread Jonathan Nieder
Hi, Andy Whitcroft wrote: When we mount a btrfs filesystem from read-only media there will be no read/write devices; for example mounting an SD card with its lock enabled. This triggers an immediate BUG during mount: kernel BUG at .../fs/btrfs/super.c:984! [...] BugLink:

Re: [PATCH 1/1] btrfs: btrfs_calc_avail_data_space cope with no read/write devices V2

2011-11-28 Thread Jonathan Nieder
Li Zefan wrote: This patch has the same problem with your previous one, that it will set f_bavail to 0. I've sent out a new patch yesterday. Thanks for the quick feedback. That makes sense. (The new patch is at [1], for reference.) [1]

Re: [PATCH 1/2] fs: add SEEK_HOLE and SEEK_DATA flags

2011-04-22 Thread Jonathan Nieder
Hi, Josef Bacik wrote: This just gets us ready to support the SEEK_HOLE and SEEK_DATA flags. Turns out using fiemap in things like cp cause more problems than it solves, so lets try and give userspace an interface that doesn't suck. So we have That's easy to believe, but could you