From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Greg KH <gregkh@linuxfoundation.org>,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, "Theodore Tso" <tytso@mit.edu>
Subject: [ 25/46] ext4: fix long mount times on very big file systems
Date: Sun, 19 Aug 2012 20:59:01 -0700 [thread overview]
Message-ID: <20120820035835.764115184@linuxfoundation.org> (raw)
In-Reply-To: <20120820035832.274275502@linuxfoundation.org>
From: Greg KH <gregkh@linuxfoundation.org>
3.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Theodore Ts'o <tytso@mit.edu>
commit 0548bbb85337e532ca2ed697c3e9b227ff2ed4b4 upstream.
Commit 8aeb00ff85a: "ext4: fix overhead calculation used by
ext4_statfs()" introduced a O(n**2) calculation which makes very large
file systems take forever to mount. Fix this with an optimization for
non-bigalloc file systems. (For bigalloc file systems the overhead
needs to be set in the the superblock.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/super.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3110,6 +3110,10 @@ static int count_overhead(struct super_b
ext4_group_t i, ngroups = ext4_get_groups_count(sb);
int s, j, count = 0;
+ if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+ return (ext4_bg_has_super(sb, grp) + ext4_bg_num_gdb(sb, grp) +
+ sbi->s_itb_per_group + 2);
+
first_block = le32_to_cpu(sbi->s_es->s_first_data_block) +
(grp * EXT4_BLOCKS_PER_GROUP(sb));
last_block = first_block + EXT4_BLOCKS_PER_GROUP(sb) - 1;
next prev parent reply other threads:[~2012-08-20 4:01 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-20 3:58 [ 00/46] 3.5.3-stable review Greg Kroah-Hartman
2012-08-20 3:58 ` [ 01/46] s390/compat: fix compat wrappers for process_vm system calls Greg Kroah-Hartman
2012-08-20 3:58 ` [ 02/46] s390/compat: fix mmap compat " Greg Kroah-Hartman
2012-08-20 3:58 ` [ 03/46] nouveau: fixup scanout enable in nvc0_pm Greg Kroah-Hartman
2012-08-20 3:58 ` [ 04/46] drm/mgag200: fix G200ER pll picking algorithm Greg Kroah-Hartman
2012-08-20 3:58 ` [ 05/46] dma: imx-dma: Fix kernel crash due to missing clock conversion Greg Kroah-Hartman
2012-08-20 3:58 ` [ 06/46] fuse: verify all ioctl retry iov elements Greg Kroah-Hartman
2012-08-20 3:58 ` [ 07/46] xen/p2m: Reserve 8MB of _brk space for P2M leafs when populating back Greg Kroah-Hartman
2012-08-20 3:58 ` [ 08/46] drm/i915: prefer wide & slow to fast & narrow in DP configs Greg Kroah-Hartman
2012-08-20 3:58 ` [ 09/46] drm/nvd0/disp: mask off high 16 bit of negative cursor x-coordinate Greg Kroah-Hartman
2012-08-20 3:58 ` [ 10/46] drm/i915: correctly order the ring init sequence Greg Kroah-Hartman
2012-08-20 3:58 ` [ 11/46] drm/i915: ignore eDP bpc settings from vbt Greg Kroah-Hartman
2012-08-20 3:58 ` [ 12/46] drm/i915: reorder edp disabling to fix ivb MacBook Air Greg Kroah-Hartman
2012-08-20 3:58 ` [ 13/46] drm/radeon: properly handle crtc powergating Greg Kroah-Hartman
2012-08-20 3:58 ` [ 14/46] drm/radeon: do not reenable crtc after moving vram start address Greg Kroah-Hartman
2012-08-20 3:58 ` [ 15/46] drm/i915: make rc6 in sysfs functions conditional Greg Kroah-Hartman
2012-08-20 3:58 ` [ 16/46] drm/radeon: add some new SI pci ids Greg Kroah-Hartman
2012-08-20 3:58 ` [ 17/46] drm/radeon: fix bank tiling parameters on cayman Greg Kroah-Hartman
2012-08-20 3:58 ` [ 18/46] drm/radeon: fix bank tiling parameters on SI Greg Kroah-Hartman
2012-08-20 3:58 ` [ 19/46] drm/radeon: fix bank tiling parameters on evergreen Greg Kroah-Hartman
2012-08-20 3:58 ` [ 20/46] drm/radeon/kms: allow "invalid" DB formats as a means to disable DB Greg Kroah-Hartman
2012-08-20 3:58 ` [ 21/46] Yama: access task_struct->comm directly Greg Kroah-Hartman
2012-08-20 3:58 ` [ 22/46] ext4: make sure the journal sb is written in ext4_clear_journal_err() Greg Kroah-Hartman
2012-08-20 3:58 ` [ 23/46] ext4: avoid kmemcheck complaint from reading uninitialized memory Greg Kroah-Hartman
2012-08-20 3:59 ` [ 24/46] ext4: dont call ext4_error while block group is locked Greg Kroah-Hartman
2012-08-20 3:59 ` Greg Kroah-Hartman [this message]
2012-08-20 3:59 ` [ 26/46] ext4: fix kernel BUG on large-scale rm -rf commands Greg Kroah-Hartman
2012-08-20 3:59 ` [ 27/46] xhci: Add Etron XHCI_TRUST_TX_LENGTH quirk Greg Kroah-Hartman
2012-08-20 3:59 ` [ 28/46] xhci: Increase reset timeout for Renesas 720201 host Greg Kroah-Hartman
2012-08-20 3:59 ` [ 29/46] xhci: Switch PPT ports to EHCI on shutdown Greg Kroah-Hartman
2012-08-20 3:59 ` [ 30/46] xhci: Fix bug after deq ptr set to link TRB Greg Kroah-Hartman
2012-08-20 3:59 ` [ 31/46] drivers-core: make structured logging play nice with dynamic-debug Greg Kroah-Hartman
2012-08-20 3:59 ` [ 32/46] staging: comedi: Fix reversed test in comedi_device_attach() Greg Kroah-Hartman
2012-08-20 3:59 ` [ 33/46] USB: add USB_VENDOR_AND_INTERFACE_INFO() macro Greg Kroah-Hartman
2012-08-20 3:59 ` [ 34/46] USB: support the new interfaces of Huawei Data Card devices in option driver Greg Kroah-Hartman
2012-08-20 3:59 ` [ 35/46] USB: option: add ZTE K5006-Z Greg Kroah-Hartman
2012-08-20 3:59 ` [ 36/46] USB: ftdi_sio: Add VID/PID for Kondo Serial USB Greg Kroah-Hartman
2012-08-20 3:59 ` [ 37/46] usb: serial: mos7840: Fixup mos7840_chars_in_buffer() Greg Kroah-Hartman
2012-08-20 3:59 ` [ 38/46] usb: gadget: u_ether: fix kworker 100% CPU issue with still used interfaces in eth_stop Greg Kroah-Hartman
2012-08-20 3:59 ` [ 39/46] rt2x00: Add support for BUFFALO WLI-UC-GNM2 to rt2800usb Greg Kroah-Hartman
2012-08-20 3:59 ` [ 40/46] KVM: PIC: call ack notifiers for irqs that are dropped form irr Greg Kroah-Hartman
2012-08-23 0:02 ` Ben Hutchings
2012-08-26 2:30 ` Greg Kroah-Hartman
2012-08-20 3:59 ` [ 41/46] KVM: x86: apply kvmclock offset to guest wall clock time Greg Kroah-Hartman
2012-08-20 3:59 ` [ 42/46] KVM: VMX: Fix ds/es corruption on i386 with preemption Greg Kroah-Hartman
2012-08-20 3:59 ` [ 43/46] KVM: x86 emulator: fix byte-sized MOVZX/MOVSX Greg Kroah-Hartman
2012-08-23 0:04 ` Ben Hutchings
2012-08-20 3:59 ` [ 44/46] KVM: VMX: Fix KVM_SET_SREGS with big real mode segments Greg Kroah-Hartman
2012-08-20 3:59 ` [ 45/46] pmac_zilog,kdb: Fix console poll hook to return instead of loop Greg Kroah-Hartman
2012-08-20 3:59 ` [ 46/46] IB/srp: Fix a race condition Greg Kroah-Hartman
2012-08-20 8:26 ` [ 00/46] 3.5.3-stable review Holger Hoffstaette
2012-08-20 14:46 ` Greg KH
2012-08-20 15:01 ` J. Bruce Fields
2012-08-21 17:08 ` Heinz Diehl
2012-08-25 8:50 ` Heinz Diehl
2012-08-21 19:26 ` Sven Joachim
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