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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2022-04-15 06:28:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-01 17:22:32 +0200 |
| commit | d3b744791bf06bc9720bfa36bc1757f25802d68b (patch) | |
| tree | b846e8441effcf001e903c0281f6b9e79b093f3b /fs/gfs2 | |
| parent | ea7a57858875256e233d29b9c01b9f558f3bd12a (diff) | |
| download | linux-stable-d3b744791bf06bc9720bfa36bc1757f25802d68b.tar.gz linux-stable-d3b744791bf06bc9720bfa36bc1757f25802d68b.tar.bz2 linux-stable-d3b744791bf06bc9720bfa36bc1757f25802d68b.zip | |
iomap: Add done_before argument to iomap_dio_rw
commit 4fdccaa0d184c202f98d73b24e3ec8eeee88ab8d upstream
Add a done_before argument to iomap_dio_rw that indicates how much of
the request has already been transferred. When the request succeeds, we
report that done_before additional bytes were tranferred. This is
useful for finishing a request asynchronously when part of the request
has already been completed synchronously.
We'll use that to allow iomap_dio_rw to be used with page faults
disabled: when a page fault occurs while submitting a request, we
synchronously complete the part of the request that has already been
submitted. The caller can then take care of the page fault and call
iomap_dio_rw again for the rest of the request, passing in the number of
bytes already tranferred.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/file.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 2d0aa55205ed..81835d34d6f6 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -823,7 +823,7 @@ static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to, if (ret) goto out_uninit; - ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL, 0); + ret = iomap_dio_rw(iocb, to, &gfs2_iomap_ops, NULL, 0, 0); gfs2_glock_dq(gh); out_uninit: gfs2_holder_uninit(gh); @@ -857,7 +857,7 @@ static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from, if (offset + len > i_size_read(&ip->i_inode)) goto out; - ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL, 0); + ret = iomap_dio_rw(iocb, from, &gfs2_iomap_ops, NULL, 0, 0); if (ret == -ENOTBLK) ret = 0; out: |