Commits
Dmitry Monakhov committed 865ffef3797
fs: fix fsync() error reporting There are two convenient ways to report errors to userspace 1) retun error to original syscall for example write(2) 2) mark mapping with error flag and return it on later fsync(2) Second one is broken if (mapping->nrpages == 0) This is real-life situation because after error pages are likey to be truncated or invalidated. We have to return an error regardless to number of pages in the mapping. #Original testcase: git@github.com:dmonakhov/xfstests.git MOUNT_OPTIONS="-b1024" ./check shared/305 Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>