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author | Dave Airlie <airlied@redhat.com> | 2020-07-24 01:28:09 +0300 |
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committer | Dave Airlie <airlied@redhat.com> | 2020-07-24 01:48:05 +0300 |
commit | 41206a073ceebc517245677a19f52ba6379b33a9 (patch) | |
tree | 2fc35aac6abe32b99058ad55b0fc6e4d449d1056 /fs/gfs2/file.c | |
parent | 206739119508d5ab4b42ab480ff61a7e6cd72d7c (diff) | |
parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
download | linux-41206a073ceebc517245677a19f52ba6379b33a9.tar.xz |
Merge v5.8-rc6 into drm-next
I've got a silent conflict + two trees based on fixes to merge.
Fixes a silent merge with amdgpu
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'fs/gfs2/file.c')
-rw-r--r-- | fs/gfs2/file.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index fe305e4bfd37..bebde537ac8c 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -558,8 +558,29 @@ out_uninit: return block_page_mkwrite_return(ret); } +static vm_fault_t gfs2_fault(struct vm_fault *vmf) +{ + struct inode *inode = file_inode(vmf->vma->vm_file); + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_holder gh; + vm_fault_t ret; + int err; + + gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); + err = gfs2_glock_nq(&gh); + if (err) { + ret = block_page_mkwrite_return(err); + goto out_uninit; + } + ret = filemap_fault(vmf); + gfs2_glock_dq(&gh); +out_uninit: + gfs2_holder_uninit(&gh); + return ret; +} + static const struct vm_operations_struct gfs2_vm_ops = { - .fault = filemap_fault, + .fault = gfs2_fault, .map_pages = filemap_map_pages, .page_mkwrite = gfs2_page_mkwrite, }; @@ -824,6 +845,9 @@ out_uninit: static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to) { + struct gfs2_inode *ip; + struct gfs2_holder gh; + size_t written = 0; ssize_t ret; if (iocb->ki_flags & IOCB_DIRECT) { @@ -832,7 +856,31 @@ static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to) return ret; iocb->ki_flags &= ~IOCB_DIRECT; } - return generic_file_read_iter(iocb, to); + iocb->ki_flags |= IOCB_NOIO; + ret = generic_file_read_iter(iocb, to); + iocb->ki_flags &= ~IOCB_NOIO; + if (ret >= 0) { + if (!iov_iter_count(to)) + return ret; + written = ret; + } else { + if (ret != -EAGAIN) + return ret; + if (iocb->ki_flags & IOCB_NOWAIT) + return ret; + } + ip = GFS2_I(iocb->ki_filp->f_mapping->host); + gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); + ret = gfs2_glock_nq(&gh); + if (ret) + goto out_uninit; + ret = generic_file_read_iter(iocb, to); + if (ret > 0) + written += ret; + gfs2_glock_dq(&gh); +out_uninit: + gfs2_holder_uninit(&gh); + return written ? written : ret; } /** |