Dominique Martinet asmadeus@codewreck.org wrote:
Reading from a file that was just extended by a write, but the write had not yet reached the server would return ENODATA as illustrated by this command: $ xfs_io -c 'open -ft test' -c 'w 4096 1000' -c 'r 0 1000' wrote 1000/1000 bytes at offset 4096 1000.000000 bytes, 1 ops; 0.0001 sec (5.610 MiB/sec and 5882.3529 ops/sec) pread: No data available
Fix this case by having netfs assume zeroes when reads from server come short like AFS and CEPH do
Signed-off-by: Dominique Martinet asmadeus@codewreck.org Co-authored-by: David Howells dhowells@redhat.com Cc: stable@vger.kernel.org
I think you want this also:
Fixes: eb497943fa21 ("9p: Convert to using the netfs helper lib to do reads and caching")
Reviewed-by: David Howells dhowells@redhat.com