diff options
| author | Yan, Zheng <zyan@redhat.com> | 2016-10-25 04:51:55 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-12-12 23:54:27 +0100 |
| commit | 2b1ac852eb67a6e95595e576371d23519105559f (patch) | |
| tree | 076e01b89275932db841f55fb604744b5c84bc5a /fs/ceph/super.h | |
| parent | ceph: fix scheduler warning due to nested blocking (diff) | |
| download | linux-2b1ac852eb67a6e95595e576371d23519105559f.tar.xz linux-2b1ac852eb67a6e95595e576371d23519105559f.zip | |
ceph: try getting buffer capability for readahead/fadvise
For readahead/fadvise cases, caller of ceph_readpages does not
hold buffer capability. Pages can be added to page cache while
there is no buffer capability. This can cause data integrity
issue.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/super.h')
| -rw-r--r-- | fs/ceph/super.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 3e3fa9163059..622d5dd9f616 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -905,6 +905,8 @@ extern int ceph_encode_dentry_release(void **p, struct dentry *dn, extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, loff_t endoff, int *got, struct page **pinned_page); +extern int ceph_try_get_caps(struct ceph_inode_info *ci, + int need, int want, int *got); /* for counting open files by mode */ extern void __ceph_get_fmode(struct ceph_inode_info *ci, int mode); |