From 9bf729c0af67897ea8498ce17c29b0683f7f2028 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Thu, 29 Apr 2010 09:55:50 +1000 Subject: xfs: add a shrinker to background inode reclaim On low memory boxes or those with highmem, kernel can OOM before the background reclaims inodes via xfssyncd. Add a shrinker to run inode reclaim so that it inode reclaim is expedited when memory is low. This is more complex than it needs to be because the VM folk don't want a context added to the shrinker infrastructure. Hence we need to add a global list of XFS mount structures so the shrinker can traverse them. Signed-off-by: Dave Chinner Reviewed-by: Christoph Hellwig --- fs/xfs/linux-2.6/xfs_super.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/xfs/linux-2.6/xfs_super.c') diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 52e06b487ced..29f1edca76de 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -1209,6 +1209,7 @@ xfs_fs_put_super( xfs_unmountfs(mp); xfs_freesb(mp); + xfs_inode_shrinker_unregister(mp); xfs_icsb_destroy_counters(mp); xfs_close_devices(mp); xfs_dmops_put(mp); @@ -1622,6 +1623,8 @@ xfs_fs_fill_super( if (error) goto fail_vnrele; + xfs_inode_shrinker_register(mp); + kfree(mtpt); return 0; @@ -1867,6 +1870,7 @@ init_xfs_fs(void) goto out_cleanup_procfs; vfs_initquota(); + xfs_inode_shrinker_init(); error = register_filesystem(&xfs_fs_type); if (error) @@ -1894,6 +1898,7 @@ exit_xfs_fs(void) { vfs_exitquota(); unregister_filesystem(&xfs_fs_type); + xfs_inode_shrinker_destroy(); xfs_sysctl_unregister(); xfs_cleanup_procfs(); xfs_buf_terminate(); -- cgit v1.2.3 From e2a07812e93d4a51b1b1a6f15145a1634948db47 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Tue, 23 Mar 2010 09:52:55 +1100 Subject: xfs: add blockdev name to kthreads This allows to see in `ps` and similar tools which kthreads are allotted to which block device/filesystem, similar to what jbd2 does. As the process name is a fixed 16-char array, no extra space is needed in tasks. PID TTY STAT TIME COMMAND 2 ? S 0:00 [kthreadd] 197 ? S 0:00 \_ [jbd2/sda2-8] 198 ? S 0:00 \_ [ext4-dio-unwrit] 204 ? S 0:00 \_ [flush-8:0] 2647 ? S 0:00 \_ [xfs_mru_cache] 2648 ? S 0:00 \_ [xfslogd/0] 2649 ? S 0:00 \_ [xfsdatad/0] 2650 ? S 0:00 \_ [xfsconvertd/0] 2651 ? S 0:00 \_ [xfsbufd/ram0] 2652 ? S 0:00 \_ [xfsaild/ram0] 2653 ? S 0:00 \_ [xfssyncd/ram0] Signed-off-by: Jan Engelhardt Reviewed-by: Dave Chinner --- fs/xfs/linux-2.6/xfs_super.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_super.c') diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 29f1edca76de..e8ad6dd2c10c 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -789,18 +789,18 @@ xfs_open_devices( * Setup xfs_mount buffer target pointers */ error = ENOMEM; - mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); + mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0, mp->m_fsname); if (!mp->m_ddev_targp) goto out_close_rtdev; if (rtdev) { - mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); + mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1, mp->m_fsname); if (!mp->m_rtdev_targp) goto out_free_ddev_targ; } if (logdev && logdev != ddev) { - mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1); + mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1, mp->m_fsname); if (!mp->m_logdev_targp) goto out_free_rtdev_targ; } else { @@ -902,7 +902,8 @@ xfsaild_start( struct xfs_ail *ailp) { ailp->xa_target = 0; - ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild"); + ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s", + ailp->xa_mount->m_fsname); if (IS_ERR(ailp->xa_task)) return -PTR_ERR(ailp->xa_task); return 0; -- cgit v1.2.3 From 37bc5743fdc29f60fb104cd9031babbabddff25a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 20 Apr 2010 17:00:59 +1000 Subject: xfs: wait for direct I/O to complete in fsync and write_inode We need to wait for all pending direct I/O requests before taking care of metadata in fsync and write_inode. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner --- fs/xfs/linux-2.6/xfs_super.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/xfs/linux-2.6/xfs_super.c') diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index e8ad6dd2c10c..e9002513e08f 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -1093,6 +1093,7 @@ xfs_fs_write_inode( * the code will only flush the inode if it isn't already * being flushed. */ + xfs_ioend_wait(ip); xfs_ilock(ip, XFS_ILOCK_SHARED); if (ip->i_update_core) { error = xfs_log_inode(ip); -- cgit v1.2.3