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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/ceph/ioctl.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/ceph/ioctl.h')
-rw-r--r-- | ANDROID_3.4.5/fs/ceph/ioctl.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/ANDROID_3.4.5/fs/ceph/ioctl.h b/ANDROID_3.4.5/fs/ceph/ioctl.h deleted file mode 100644 index be4a6048..00000000 --- a/ANDROID_3.4.5/fs/ceph/ioctl.h +++ /dev/null @@ -1,98 +0,0 @@ -#ifndef FS_CEPH_IOCTL_H -#define FS_CEPH_IOCTL_H - -#include <linux/ioctl.h> -#include <linux/types.h> - -#define CEPH_IOCTL_MAGIC 0x97 - -/* - * CEPH_IOC_GET_LAYOUT - get file layout or dir layout policy - * CEPH_IOC_SET_LAYOUT - set file layout - * CEPH_IOC_SET_LAYOUT_POLICY - set dir layout policy - * - * The file layout specifies how file data is striped over objects in - * the distributed object store, which object pool they belong to (if - * it differs from the default), and an optional 'preferred osd' to - * store them on. - * - * Files get a new layout based on the policy set on the containing - * directory or one of its ancestors. The GET_LAYOUT ioctl will let - * you examine the layout for a file or the policy on a directory. - * - * SET_LAYOUT will let you set a layout on a newly created file. This - * only works immediately after the file is created and before any - * data is written to it. - * - * SET_LAYOUT_POLICY will let you set a layout policy (default layout) - * on a directory that will apply to any new files created in that - * directory (or any child directory that doesn't specify a layout of - * its own). - */ - -/* use u64 to align sanely on all archs */ -struct ceph_ioctl_layout { - __u64 stripe_unit, stripe_count, object_size; - __u64 data_pool; - __s64 preferred_osd; -}; - -#define CEPH_IOC_GET_LAYOUT _IOR(CEPH_IOCTL_MAGIC, 1, \ - struct ceph_ioctl_layout) -#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \ - struct ceph_ioctl_layout) -#define CEPH_IOC_SET_LAYOUT_POLICY _IOW(CEPH_IOCTL_MAGIC, 5, \ - struct ceph_ioctl_layout) - -/* - * CEPH_IOC_GET_DATALOC - get location of file data in the cluster - * - * Extract identity, address of the OSD and object storing a given - * file offset. - */ -struct ceph_ioctl_dataloc { - __u64 file_offset; /* in+out: file offset */ - __u64 object_offset; /* out: offset in object */ - __u64 object_no; /* out: object # */ - __u64 object_size; /* out: object size */ - char object_name[64]; /* out: object name */ - __u64 block_offset; /* out: offset in block */ - __u64 block_size; /* out: block length */ - __s64 osd; /* out: osd # */ - struct sockaddr_storage osd_addr; /* out: osd address */ -}; - -#define CEPH_IOC_GET_DATALOC _IOWR(CEPH_IOCTL_MAGIC, 3, \ - struct ceph_ioctl_dataloc) - -/* - * CEPH_IOC_LAZYIO - relax consistency - * - * Normally Ceph switches to synchronous IO when multiple clients have - * the file open (and or more for write). Reads and writes bypass the - * page cache and go directly to the OSD. Setting this flag on a file - * descriptor will allow buffered IO for this file in cases where the - * application knows it won't interfere with other nodes (or doesn't - * care). - */ -#define CEPH_IOC_LAZYIO _IO(CEPH_IOCTL_MAGIC, 4) - -/* - * CEPH_IOC_SYNCIO - force synchronous IO - * - * This ioctl sets a file flag that forces the synchronous IO that - * bypasses the page cache, even if it is not necessary. This is - * essentially the opposite behavior of IOC_LAZYIO. This forces the - * same read/write path as a file opened by multiple clients when one - * or more of those clients is opened for write. - * - * Note that this type of sync IO takes a different path than a file - * opened with O_SYNC/D_SYNC (writes hit the page cache and are - * immediately flushed on page boundaries). It is very similar to - * O_DIRECT (writes bypass the page cache) excep that O_DIRECT writes - * are not copied (user page must remain stable) and O_DIRECT writes - * have alignment restrictions (on the buffer and file offset). - */ -#define CEPH_IOC_SYNCIO _IO(CEPH_IOCTL_MAGIC, 5) - -#endif |