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| author | Eric Van Hensbergen <ericvh@kernel.org> | 2023-07-19 19:22:30 +0300 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@kernel.org> | 2023-07-20 19:15:14 +0300 |
| commit | 75b396821cb71164dac3a1ad51dda4781ea8dbad (patch) | |
| tree | 66a78e0f68a09b830fc768607a0d2baf9305728b /fs | |
| parent | 95f41d87810083d8b3dedcce46a4e356cf4a9673 (diff) | |
| download | linux-75b396821cb71164dac3a1ad51dda4781ea8dbad.tar.xz | |
fs/9p: remove unnecessary and overrestrictive check
This eliminates a check for shared that was overrestrictive and
prevented read-only mmaps when writeback caches weren't enabled.
Cc: stable@vger.kernel.org
Fixes: 1543b4c5071c ("fs/9p: remove writeback fid and fix per-file modes")
Reported-by: Robert Schwebel <r.schwebel@pengutronix.de>
Closes: https://lore.kernel.org/v9fs/ZK25XZ%2BGpR3KHIB%2F@pengutronix.de
Reviewed-by: Dominique Martinet <asmadeus@codewreck.org>
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/9p/vfs_file.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 2996fb00387f..9b61b480a9b0 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -505,9 +505,7 @@ v9fs_file_mmap(struct file *filp, struct vm_area_struct *vma) p9_debug(P9_DEBUG_MMAP, "filp :%p\n", filp); if (!(v9ses->cache & CACHE_WRITEBACK)) { - p9_debug(P9_DEBUG_CACHE, "(no mmap mode)"); - if (vma->vm_flags & VM_MAYSHARE) - return -ENODEV; + p9_debug(P9_DEBUG_CACHE, "(read-only mmap mode)"); invalidate_inode_pages2(filp->f_mapping); return generic_file_readonly_mmap(filp, vma); } |