Hi All, There has been a request to provide a notification whenever the amount of free space drops below a certain level. This level, preferably, could be adjusted based on the actual space usage, so that appropraite actions can be undertaken for different levels being reached. The idea here is to expose a pollabe sysfs entry through which the threshold can be spcified, in a form of a number of used logical blocks. Then, the process might wait for a notification, through the very same sysfs entry, instead of periodically calling statfs - as the concept introduced, is to resemble the very last with hopefully, minimum overhead. When the process wakes-up it might decide to increase the threshold and once again wait for the notification. BR Beata Michalska ---- Beate Michalska (1): ext4: Add pollable sysfs entry for block threshold events fs/ext4/balloc.c | 17 ++++------------- fs/ext4/ext4.h | 12 ++++++++++++ fs/ext4/ialloc.c | 5 +---- fs/ext4/inode.c | 2 +- fs/ext4/mballoc.c | 14 ++++---------- fs/ext4/resize.c | 3 ++- fs/ext4/super.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++-- 7 files changed, 74 insertions(+), 31 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
