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authorKotresh HR <khiremat@redhat.com>2021-11-10 21:00:21 +0300
committerIlya Dryomov <idryomov@gmail.com>2022-01-13 15:40:06 +0300
commit8e55ba8caae5cd380b1c9c81a426602a667e110e (patch)
tree34504e35db1145d0a16e17f87e1babd53c1f2608 /fs/ceph/super.h
parentadbed05ed62d1f3b6f6c5cb88ec52c1ffafc0fd9 (diff)
downloadlinux-8e55ba8caae5cd380b1c9c81a426602a667e110e.tar.xz
ceph: Fix incorrect statfs report for small quota
Problem: The statfs reports incorrect free/available space for quota less then CEPH_BLOCK size (4M). Solution: For quota less than CEPH_BLOCK size, smaller block size of 4K is used. But if quota is less than 4K, it is decided to go with binary use/free of 4K block. For quota size less than 4K size, report the total=used=4K,free=0 when quota is full and total=free=4K,used=0 otherwise. Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/super.h')
-rw-r--r--fs/ceph/super.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index ec6b221e5b62..533189b537b2 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -32,6 +32,7 @@
* large volume sizes on 32-bit machines. */
#define CEPH_BLOCK_SHIFT 22 /* 4 MB */
#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
+#define CEPH_4K_BLOCK_SHIFT 12 /* 4 KB */
#define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blocklisted */
#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */