Jan Kara cbd7584e6e ext4: fix block reservation for bigalloc filesystems ... For bigalloc filesystems we have to check whether newly requested inode block isn't already part of a cluster for which we already have delayed allocation reservation. This check happens in ext4_ext_map_blocks() and that function sets EXT4_MAP_FROM_CLUSTER if that's the case. However if ext4_da_map_blocks() finds in extent cache information about the block, we don't call into ext4_ext_map_blocks() and thus we always end up getting new reservation even if the space for cluster is already reserved. This results in overreservation and premature ENOSPC reports. Fix the problem by checking for existing cluster reservation already in ext4_da_map_blocks(). That simplifies the logic and actually allows us to get rid of the EXT4_MAP_FROM_CLUSTER flag completely. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>		2014-11-25 11:41:49 -05:00
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events	ext4: fix block reservation for bigalloc filesystems	2014-11-25 11:41:49 -05:00
define_trace.h	tracing: Add DEFINE_EVENT_FN() macro	2013-06-20 22:24:32 -07:00
ftrace.h	tracing: Add __field_struct macro for TRACE_EVENT()	2014-06-21 00:18:42 -04:00
syscall.h	tracing: Fix syscall_*regfunc() vs copy_process() race	2014-06-21 00:15:12 -04:00