diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-05-22 11:38:11 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2022-06-10 16:10:23 -0400 |
| commit | 164f4064ca81eefcea29f7f5dcf394f92be1d0c0 (patch) | |
| tree | 5275b76d52a540bb1e9c91118e6c9510f71d3b2e /include/linux/fs.h | |
| parent | 91b94c5d6ae55d1161633047ffeea644b110b35f (diff) | |
keep iocb_flags() result cached in struct file
* calculate at the time we set FMODE_OPENED (do_dentry_open() for normal
opens, alloc_file() for pipe()/socket()/etc.)
* update when handling F_SETFL
* keep in a new field - file->f_iocb_flags; since that thing is needed only
before the refcount reaches zero, we can put it into the same anon union
where ->f_rcuhead and ->f_llist live - those are used only after refcount
reaches zero.
Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 380a1292f4f9..c82b9d442f56 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -926,6 +926,7 @@ struct file { union { struct llist_node f_llist; struct rcu_head f_rcuhead; + unsigned int f_iocb_flags; }; struct path f_path; struct inode *f_inode; /* cached value */ @@ -2199,13 +2200,11 @@ static inline bool HAS_UNMAPPED_ID(struct user_namespace *mnt_userns, !gid_valid(i_gid_into_mnt(mnt_userns, inode)); } -static inline int iocb_flags(struct file *file); - static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) { *kiocb = (struct kiocb) { .ki_filp = filp, - .ki_flags = iocb_flags(filp), + .ki_flags = filp->f_iocb_flags, .ki_ioprio = get_current_ioprio(), }; } |