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| author | Amir Goldstein <amir73il@gmail.com> | 2019-02-27 13:32:11 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2019-05-06 13:54:51 +0200 |
| commit | 9e46b840c7053b5f7a245e98cd239b60d189a96c (patch) | |
| tree | 802b84ae86ddae6b08875cc7d219995e618214ff /fs/mpage.c | |
| parent | 3428030da004a1128cbdcf93dc03e16f184d845b (diff) | |
| download | linux-9e46b840c7053b5f7a245e98cd239b60d189a96c.tar.bz2 | |
ovl: support stacked SEEK_HOLE/SEEK_DATA
Overlay file f_pos is the master copy that is preserved
through copy up and modified on read/write, but only real
fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose
limitations that are more strict than ->s_maxbytes for specific
files, so we use the real file to perform seeks.
We do not call real fs for SEEK_CUR:0 query and for SEEK_SET:0
requests.
Fixes: d1d04ef8572b ("ovl: stack file ops")
Reported-by: Eddie Horng <eddiehorng.tw@gmail.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/mpage.c')
0 files changed, 0 insertions, 0 deletions