diff options
| author | Sjoerd Simons <[email protected]> | 2021-11-05 09:10:51 +0100 |
|---|---|---|
| committer | Richard Weinberger <[email protected]> | 2021-12-21 21:44:27 +0100 |
| commit | ce72750f04d68a45ef971c3547fe2d6f9cd4756e (patch) | |
| tree | 3ba3c76130e5f64d6280a394682a1ff69099e4ba | |
| parent | 9b0da3f22307af693be80f5d3a89dc4c7f360a85 (diff) | |
hostfs: Fix writeback of dirty pages
Hostfs was not setting up the backing device information, which means it
uses the noop bdi. The noop bdi does not have the writeback capability
enabled, which in turns means dirty pages never got written back to
storage.
In other words programs using mmap to write to files on hostfs never
actually got their data written out...
Fix this by simply setting up the bdi with default settings as all the
required code for writeback is already in place.
Signed-off-by: Sjoerd Simons <[email protected]>
Reviewed-by: Christopher Obbard <[email protected]>
Tested-by: Ritesh Raj Sarraf <[email protected]>
Acked-By: Anton Ivanov <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index d5c9d886cd9f..ef481c3d9019 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -924,6 +924,9 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent) sb->s_op = &hostfs_sbops; sb->s_d_op = &simple_dentry_operations; sb->s_maxbytes = MAX_LFS_FILESIZE; + err = super_setup_bdi(sb); + if (err) + goto out; /* NULL is printed as '(null)' by printf(): avoid that. */ if (req_root == NULL) |