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| author | Olof Johansson <olof@lixom.net> | 2013-04-18 09:19:26 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2013-04-18 09:21:20 -0700 |
| commit | da0851fe3a8ebc416ab61ce50ef2fb3c3d7375c9 (patch) | |
| tree | 833778d45f2327702f8abc89d236e71ab3b0e291 /fs/cifs/cifsfs.c | |
| parent | 7fa7ed8e1c93dda575021f177a3f6957dc98b28f (diff) | |
| parent | 4b23185ff5e1c2ada2845002a034e8840ab98b63 (diff) | |
| download | op-kernel-dev-da0851fe3a8ebc416ab61ce50ef2fb3c3d7375c9.zip op-kernel-dev-da0851fe3a8ebc416ab61ce50ef2fb3c3d7375c9.tar.gz | |
Merge tag 'imx-dt-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt
From Shawn Guo:
The imx device tree changes for 3.10:
* The huge diff stat is introduced by the pinctrl changes. With DTC
macro support ready, we're moving those huge mount of data about pins
out of pinctrl driver.
* Device tree source updates for GPI, LDB, SRC, cpufreq-cpu0.
* Initial imx6dl device tree support
* Board level DTS changes for some imx27 and imx51 platforms.
* tag 'imx-dt-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6: (605 commits)
ARM: dts: imx6dl-wandboard: Add USB Host support
ARM: dts: imx51 cpu node
ARM: dts: Add missing imx27-phytec-phycore dtb target
ARM: dts: Add NFC support for i.MX27 Phytec PCM038 module
ARM: i.MX51: Add PATA support
ARM: dts: Add initial support for Wandboard Dual-Lite
ARM: dts: imx: add initial imx6dl-sabreauto support
ARM: dts: imx: add initial imx6dl-sabresd support
ARM: dts: imx: make sabreauto and sabresd common
pinctrl: add pinctrl driver for imx6sl
pinctrl: add pinctrl driver for imx6dl
ARM: dts: imx53: fix SD2_DATA1 pad AUDMUX_AUD4 configuration
ARM: dts: MicroSys sbc6x support (i.MX6)
ARM i.MX5: Add System Reset Controller (SRC) support for i.MX51 and i.MX53
ARM i.MX5: Add system reset controller (SRC) to i.MX51 and i.MX53 device tree
ARM i.MX6q: Link system reset controller (SRC) to IPU in DT
ARM i.MX6q: Add LDB device to device tree
ARM: imx5 DT init cpufreq-cpu0 device
ARM: imx27 DT init cpufreq-cpu0 device
ARM i.MX53: Add LDB device to device tree
...
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'fs/cifs/cifsfs.c')
| -rw-r--r-- | fs/cifs/cifsfs.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 3cf8a15..345fc89 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -91,6 +91,30 @@ struct workqueue_struct *cifsiod_wq; __u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE]; #endif +/* + * Bumps refcount for cifs super block. + * Note that it should be only called if a referece to VFS super block is + * already held, e.g. in open-type syscalls context. Otherwise it can race with + * atomic_dec_and_test in deactivate_locked_super. + */ +void +cifs_sb_active(struct super_block *sb) +{ + struct cifs_sb_info *server = CIFS_SB(sb); + + if (atomic_inc_return(&server->active) == 1) + atomic_inc(&sb->s_active); +} + +void +cifs_sb_deactive(struct super_block *sb) +{ + struct cifs_sb_info *server = CIFS_SB(sb); + + if (atomic_dec_and_test(&server->active)) + deactivate_super(sb); +} + static int cifs_read_super(struct super_block *sb) { |
