On Wed, Apr 16, 2014 at 04:04:59PM +1000, Dave Chinner wrote: > On Wed, Apr 16, 2014 at 02:03:36PM +1000, NeilBrown wrote: > > xfs_file_*_read holds an inode lock while calling a generic 'read' > > function. These functions perform read-ahead and are quite likely to > > allocate memory. > > Yes, that's what reading data from disk requires. > > > So set PF_FSTRANS to ensure they avoid __GFP_FS and so don't recurse > > into a filesystem to free memory. > > We already have that protection via the Oops, stray paste. Ignore that comment. -Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>