From: Eric Van Hensbergen Date: Wed, 26 Apr 2023 16:18:49 +0000 (+0000) Subject: fs/9p: Fix bit operation logic error X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=21e26d5e54ab7cfe6b488fd27d4d70956d07e03b;p=linux.git fs/9p: Fix bit operation logic error This re-introduces a fix that somehow got dropped during rebase of the current series in for-next. When writeback is enabled, opens are forced to support both read and write operations but with the logic error other flags may be dropped unintentionaly. Reported-by: Christophe Jaillet Signed-off-by: Eric Van Hensbergen --- diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 54dfe4f10f438..3791f642c5023 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -823,7 +823,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, p9_omode = v9fs_uflags2omode(flags, v9fs_proto_dotu(v9ses)); if ((v9ses->cache & CACHE_WRITEBACK) && (p9_omode & P9_OWRITE)) { - p9_omode = (p9_omode & !P9_OWRITE) | P9_ORDWR; + p9_omode = (p9_omode & ~P9_OWRITE) | P9_ORDWR; p9_debug(P9_DEBUG_CACHE, "write-only file with writeback enabled, creating w/ O_RDWR\n"); } diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index f9371b5b70ea6..3acf2bcb69cc0 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -288,7 +288,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, } if ((v9ses->cache & CACHE_WRITEBACK) && (p9_omode & P9_OWRITE)) { - p9_omode = (p9_omode & !P9_OWRITE) | P9_ORDWR; + p9_omode = (p9_omode & ~P9_OWRITE) | P9_ORDWR; p9_debug(P9_DEBUG_CACHE, "write-only file with writeback enabled, creating w/ O_RDWR\n"); }