[PATCH] xfs: add hot tracking support.
From: Dave Chinner <david@fromorbit.com>
Date: 2012-10-16 00:04:05
Also in:
linux-btrfs, linux-fsdevel, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
From: Dave Chinner <redacted> Connect up the VFS hot tracking support so XFS filesystems can make use of it. Signed-off-by: Dave Chinner <redacted> --- fs/xfs/xfs_mount.h | 1 + fs/xfs/xfs_super.c | 9 +++++++++ 2 files changed, 10 insertions(+)
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index a631ca3..d5e7277 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h@@ -215,6 +215,7 @@ typedef struct xfs_mount { #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops must be synchronous except for space allocations */ +#define XFS_MOUNT_HOTTRACK (1ULL << 1) /* hot inode tracking */ #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem operations, typically for
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 56c2537..17786ff 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c@@ -61,6 +61,7 @@ #include <linux/kthread.h> #include <linux/freezer.h> #include <linux/parser.h> +#include <linux/hot_tracking.h> static const struct super_operations xfs_super_operations; static kmem_zone_t *xfs_ioend_zone;
@@ -114,6 +115,7 @@ mempool_t *xfs_ioend_pool; #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ +#define MNTOPT_HOTTRACK "hot_track" /* hot inode tracking */ /* * Table driven mount option parser.
@@ -371,6 +373,8 @@ xfs_parseargs( mp->m_flags |= XFS_MOUNT_DISCARD; } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { mp->m_flags &= ~XFS_MOUNT_DISCARD; + } else if (!strcmp(this_char, MNTOPT_HOTTRACK)) { + mp->m_flags |= XFS_MOUNT_HOTTRACK; } else if (!strcmp(this_char, "ihashsize")) { xfs_warn(mp, "ihashsize no longer used, option is deprecated.");
@@ -1040,6 +1044,9 @@ xfs_fs_put_super( { struct xfs_mount *mp = XFS_M(sb); + if (mp->m_flags & XFS_MOUNT_HOTTRACK) + hot_track_exit(sb); + xfs_filestream_unmount(mp); xfs_unmountfs(mp);
@@ -1470,6 +1477,8 @@ xfs_fs_fill_super( error = ENOMEM; goto out_unmount; } + if (mp->m_flags & XFS_MOUNT_HOTTRACK) + hot_track_init(sb); return 0;