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| author | Dominique Martinet <asmadeus@codewreck.org> | 2022-01-10 12:10:31 +0100 |
|---|---|---|
| committer | Dominique Martinet <asmadeus@codewreck.org> | 2022-01-11 07:21:53 +0100 |
| commit | 19d1c32652bbbf406063025354845fdddbcecd3a (patch) | |
| tree | 57f52600d66502bfc8a649a573768c0fe08d870c /MAINTAINERS | |
| parent | net/9p: show error message if user 'msize' cannot be satisfied (diff) | |
| download | linux-19d1c32652bbbf406063025354845fdddbcecd3a.tar.xz linux-19d1c32652bbbf406063025354845fdddbcecd3a.zip | |
9p: fix enodata when reading growing file
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
Link: https://lkml.kernel.org/r/20220110111444.926753-1-asmadeus@codewreck.org
Cc: stable@vger.kernel.org
Fixes: eb497943fa21 ("9p: Convert to using the netfs helper lib to do reads and caching")
Co-authored-by: David Howells <dhowells@redhat.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions