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| author |   Vivek Goyal <vgoyal@redhat.com> | 2020-08-19 18:19:53 -0400 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2020-09-10 11:39:23 +0200 |
| commit | 9483e7d5809ab41890298a6a1f5d23c4e10a2cfd (patch) | |
| tree | 5e6d598459a117362ed704debbe77ecdd4e1d1f3 /fs/fuse | |
| parent | virtiofs: add DAX mmap support (diff) | |
| download | linux-dev-9483e7d5809ab41890298a6a1f5d23c4e10a2cfd.tar.xz linux-dev-9483e7d5809ab41890298a6a1f5d23c4e10a2cfd.zip | |
virtiofs: define dax address space operations
This is done along the lines of ext4 and xfs. I primarily wanted
->writepages hook at this time so that I could call into
dax_writeback_mapping_range(). This in turn will decide which pfns need to
be written back.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/dax.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c index b8ec7d64aa68..c21305409191 100644 --- a/fs/fuse/dax.c +++ b/fs/fuse/dax.c @@ -575,6 +575,16 @@ out: return ret; } +static int fuse_dax_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + + struct inode *inode = mapping->host; + struct fuse_conn *fc = get_fuse_conn(inode); + + return dax_writeback_mapping_range(mapping, fc->dax->dev, wbc); +} + static vm_fault_t __fuse_dax_fault(struct vm_fault *vmf, enum page_entry_size pe_size, bool write) { @@ -741,6 +751,13 @@ bool fuse_dax_inode_alloc(struct super_block *sb, struct fuse_inode *fi) return true; } +static const struct address_space_operations fuse_dax_file_aops = { + .writepages = fuse_dax_writepages, + .direct_IO = noop_direct_IO, + .set_page_dirty = noop_set_page_dirty, + .invalidatepage = noop_invalidatepage, +}; + void fuse_dax_inode_init(struct inode *inode) { struct fuse_conn *fc = get_fuse_conn(inode); @@ -749,6 +766,7 @@ void fuse_dax_inode_init(struct inode *inode) return; inode->i_flags |= S_DAX; + inode->i_data.a_ops = &fuse_dax_file_aops; } bool fuse_dax_check_alignment(struct fuse_conn *fc, unsigned int map_alignment) |