Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-01 10:42:11 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

fs/9p: remove unnecessary and overrestrictive check

Browse Source 
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: 1543b4c507 ("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>
This commit is contained in:
Eric Van Hensbergen 2023-07-19 16:22:30 +00:00
parent 95f41d8781
commit 75b396821c
No known key found for this signature in database
GPG Key ID: 88FFD5FB4A5FFF98
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/9p/vfs_file.c
View File

@ -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);
}