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shann@25629
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1 SPDX-License-Identifier: GPL-2.0
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shann@25629
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2 aufs4.19 base patch
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3
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4 diff --git a/MAINTAINERS b/MAINTAINERS
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5 index b2f710eee67a7..8449c695ba0b1 100644
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shann@25629
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6 --- a/MAINTAINERS
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7 +++ b/MAINTAINERS
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shann@25629
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8 @@ -2605,6 +2605,19 @@ F: include/linux/audit.h
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9 F: include/uapi/linux/audit.h
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10 F: kernel/audit*
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11
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12 +AUFS (advanced multi layered unification filesystem) FILESYSTEM
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13 +M: "J. R. Okajima" <hooanon05g@gmail.com>
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14 +L: aufs-users@lists.sourceforge.net (members only)
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15 +L: linux-unionfs@vger.kernel.org
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16 +W: http://aufs.sourceforge.net
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17 +T: git://github.com/sfjro/aufs4-linux.git
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18 +S: Supported
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19 +F: Documentation/filesystems/aufs/
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20 +F: Documentation/ABI/testing/debugfs-aufs
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21 +F: Documentation/ABI/testing/sysfs-aufs
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22 +F: fs/aufs/
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23 +F: include/uapi/linux/aufs_type.h
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24 +
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25 AUXILIARY DISPLAY DRIVERS
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26 M: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
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27 S: Maintained
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28 diff --git a/drivers/block/loop.c b/drivers/block/loop.c
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29 index ea9debf59b225..9e534a36c5941 100644
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30 --- a/drivers/block/loop.c
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31 +++ b/drivers/block/loop.c
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32 @@ -739,6 +739,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
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33 return error;
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34 }
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35
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shann@25629
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36 +/*
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37 + * for AUFS
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38 + * no get/put for file.
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39 + */
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40 +struct file *loop_backing_file(struct super_block *sb)
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41 +{
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42 + struct file *ret;
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43 + struct loop_device *l;
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44 +
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45 + ret = NULL;
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46 + if (MAJOR(sb->s_dev) == LOOP_MAJOR) {
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47 + l = sb->s_bdev->bd_disk->private_data;
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48 + ret = l->lo_backing_file;
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49 + }
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50 + return ret;
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51 +}
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52 +EXPORT_SYMBOL_GPL(loop_backing_file);
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53 +
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shann@25629
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54 /* loop sysfs attributes */
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55
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56 static ssize_t loop_attr_show(struct device *dev, char *page,
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57 diff --git a/fs/dcache.c b/fs/dcache.c
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58 index 2e7e8d85e9b40..9f57bd87bce5a 100644
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59 --- a/fs/dcache.c
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60 +++ b/fs/dcache.c
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61 @@ -1238,7 +1238,7 @@ enum d_walk_ret {
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62 *
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63 * The @enter() callbacks are called with d_lock held.
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64 */
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shann@25629
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65 -static void d_walk(struct dentry *parent, void *data,
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66 +void d_walk(struct dentry *parent, void *data,
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67 enum d_walk_ret (*enter)(void *, struct dentry *))
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68 {
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69 struct dentry *this_parent;
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70 diff --git a/fs/fcntl.c b/fs/fcntl.c
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71 index 4137d96534a6c..d4da10be555c9 100644
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72 --- a/fs/fcntl.c
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73 +++ b/fs/fcntl.c
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74 @@ -32,7 +32,7 @@
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75
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76 #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
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77
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shann@25629
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78 -static int setfl(int fd, struct file * filp, unsigned long arg)
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79 +int setfl(int fd, struct file *filp, unsigned long arg)
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80 {
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shann@25629
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81 struct inode * inode = file_inode(filp);
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82 int error = 0;
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83 @@ -63,6 +63,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
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84
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85 if (filp->f_op->check_flags)
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86 error = filp->f_op->check_flags(arg);
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87 + if (!error && filp->f_op->setfl)
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88 + error = filp->f_op->setfl(filp, arg);
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shann@25629
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89 if (error)
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90 return error;
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91
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92 diff --git a/fs/inode.c b/fs/inode.c
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93 index 42f6d25f32a52..fa6ae6a217fbd 100644
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94 --- a/fs/inode.c
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95 +++ b/fs/inode.c
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96 @@ -1657,7 +1657,7 @@ EXPORT_SYMBOL(generic_update_time);
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97 * This does the actual work of updating an inodes time or version. Must have
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98 * had called mnt_want_write() before calling this.
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99 */
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shann@25629
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100 -static int update_time(struct inode *inode, struct timespec64 *time, int flags)
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101 +int update_time(struct inode *inode, struct timespec64 *time, int flags)
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shann@25629
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102 {
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shann@25629
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103 int (*update_time)(struct inode *, struct timespec64 *, int);
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104
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105 diff --git a/fs/namespace.c b/fs/namespace.c
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106 index 99186556f8d34..72c93f3e86478 100644
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107 --- a/fs/namespace.c
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108 +++ b/fs/namespace.c
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109 @@ -770,6 +770,12 @@ static inline int check_mnt(struct mount *mnt)
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110 return mnt->mnt_ns == current->nsproxy->mnt_ns;
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shann@25629
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111 }
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112
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113 +/* for aufs, CONFIG_AUFS_BR_FUSE */
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114 +int is_current_mnt_ns(struct vfsmount *mnt)
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115 +{
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116 + return check_mnt(real_mount(mnt));
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117 +}
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118 +
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119 /*
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120 * vfsmount lock must be held for write
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121 */
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122 diff --git a/fs/read_write.c b/fs/read_write.c
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123 index 8a2737f0d61d3..45e3e7a0d4e64 100644
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124 --- a/fs/read_write.c
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125 +++ b/fs/read_write.c
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126 @@ -489,6 +489,28 @@ ssize_t __vfs_write(struct file *file, const char __user *p, size_t count,
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127 return -EINVAL;
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128 }
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129
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130 +vfs_readf_t vfs_readf(struct file *file)
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131 +{
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132 + const struct file_operations *fop = file->f_op;
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133 +
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134 + if (fop->read)
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135 + return fop->read;
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136 + if (fop->read_iter)
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137 + return new_sync_read;
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138 + return ERR_PTR(-ENOSYS); /* doesn't have ->read(|_iter)() op */
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139 +}
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140 +
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141 +vfs_writef_t vfs_writef(struct file *file)
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142 +{
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143 + const struct file_operations *fop = file->f_op;
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144 +
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145 + if (fop->write)
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146 + return fop->write;
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147 + if (fop->write_iter)
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148 + return new_sync_write;
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149 + return ERR_PTR(-ENOSYS); /* doesn't have ->write(|_iter)() op */
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150 +}
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151 +
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shann@25629
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152 ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos)
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shann@25629
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153 {
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shann@25629
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154 mm_segment_t old_fs;
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155 diff --git a/fs/splice.c b/fs/splice.c
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156 index b3daa971f5977..1dd7f96b22dc4 100644
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157 --- a/fs/splice.c
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158 +++ b/fs/splice.c
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159 @@ -838,8 +838,8 @@ EXPORT_SYMBOL(generic_splice_sendpage);
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160 /*
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shann@25629
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161 * Attempt to initiate a splice from pipe to file.
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162 */
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shann@25629
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163 -static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
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164 - loff_t *ppos, size_t len, unsigned int flags)
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165 +long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
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166 + loff_t *ppos, size_t len, unsigned int flags)
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167 {
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shann@25629
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168 ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
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shann@25629
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169 loff_t *, size_t, unsigned int);
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170 @@ -855,9 +855,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
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171 /*
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shann@25629
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172 * Attempt to initiate a splice from a file to a pipe.
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173 */
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shann@25629
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174 -static long do_splice_to(struct file *in, loff_t *ppos,
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175 - struct pipe_inode_info *pipe, size_t len,
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176 - unsigned int flags)
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shann@25629
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177 +long do_splice_to(struct file *in, loff_t *ppos,
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178 + struct pipe_inode_info *pipe, size_t len,
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179 + unsigned int flags)
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180 {
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181 ssize_t (*splice_read)(struct file *, loff_t *,
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182 struct pipe_inode_info *, size_t, unsigned int);
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183 diff --git a/fs/sync.c b/fs/sync.c
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184 index b54e0541ad899..28607828e96f2 100644
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185 --- a/fs/sync.c
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186 +++ b/fs/sync.c
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187 @@ -28,7 +28,7 @@
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188 * wait == 1 case since in that case write_inode() functions do
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189 * sync_dirty_buffer() and thus effectively write one block at a time.
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190 */
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shann@25629
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191 -static int __sync_filesystem(struct super_block *sb, int wait)
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192 +int __sync_filesystem(struct super_block *sb, int wait)
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193 {
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194 if (wait)
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195 sync_inodes_sb(sb);
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196 diff --git a/include/linux/fs.h b/include/linux/fs.h
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197 index 897eae8faee1b..41da4219febfe 100644
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198 --- a/include/linux/fs.h
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199 +++ b/include/linux/fs.h
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shann@25629
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200 @@ -1286,6 +1286,7 @@ extern void fasync_free(struct fasync_struct *);
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201 /* can be called from interrupts */
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shann@25629
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202 extern void kill_fasync(struct fasync_struct **, int, int);
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203
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204 +extern int setfl(int fd, struct file *filp, unsigned long arg);
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shann@25629
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205 extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
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shann@25629
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206 extern int f_setown(struct file *filp, unsigned long arg, int force);
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shann@25629
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207 extern void f_delown(struct file *filp);
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shann@25629
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208 @@ -1747,6 +1748,7 @@ struct file_operations {
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209 ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
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shann@25629
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210 unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
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211 int (*check_flags)(int);
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212 + int (*setfl)(struct file *, unsigned long);
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213 int (*flock) (struct file *, int, struct file_lock *);
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214 ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
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shann@25629
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215 ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
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shann@25629
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216 @@ -1818,6 +1820,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
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217 struct iovec *fast_pointer,
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218 struct iovec **ret_pointer);
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219
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220 +typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *);
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221 +typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t,
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222 + loff_t *);
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shann@25629
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223 +vfs_readf_t vfs_readf(struct file *file);
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224 +vfs_writef_t vfs_writef(struct file *file);
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225 +
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shann@25629
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226 extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
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shann@25629
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227 extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
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shann@25629
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228 extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
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shann@25629
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229 @@ -2243,6 +2251,7 @@ extern int current_umask(void);
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shann@25629
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230 extern void ihold(struct inode * inode);
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shann@25629
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231 extern void iput(struct inode *);
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shann@25629
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232 extern int generic_update_time(struct inode *, struct timespec64 *, int);
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233 +extern int update_time(struct inode *, struct timespec64 *, int);
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234
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shann@25629
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235 /* /sys/fs */
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shann@25629
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236 extern struct kobject *fs_kobj;
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shann@25629
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237 @@ -2530,6 +2539,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb)
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238 return false;
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239 }
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shann@25629
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240 #endif
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shann@25629
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241 +extern int __sync_filesystem(struct super_block *, int);
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shann@25629
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242 extern int sync_filesystem(struct super_block *);
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shann@25629
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243 extern const struct file_operations def_blk_fops;
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shann@25629
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244 extern const struct file_operations def_chr_fops;
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shann@25629
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245 diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
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shann@25629
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246 index b0d0b51c4d850..f73ffaa0199ee 100644
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shann@25629
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247 --- a/include/linux/lockdep.h
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248 +++ b/include/linux/lockdep.h
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shann@25629
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249 @@ -313,6 +313,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock,
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shann@25629
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250 return lock->key == key;
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shann@25629
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251 }
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252
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shann@25629
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253 +struct lock_class *lockdep_hlock_class(struct held_lock *hlock);
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254 +
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shann@25629
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255 /*
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shann@25629
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256 * Acquire a lock.
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shann@25629
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257 *
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shann@25629
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258 @@ -439,6 +441,7 @@ struct lockdep_map { };
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259
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shann@25629
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260 #define lockdep_depth(tsk) (0)
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261
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shann@25629
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262 +#define lockdep_is_held(lock) (1)
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shann@25629
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263 #define lockdep_is_held_type(l, r) (1)
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264
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265 #define lockdep_assert_held(l) do { (void)(l); } while (0)
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266 diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
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267 index 35942084cd40d..24f5fd1a789de 100644
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268 --- a/include/linux/mnt_namespace.h
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269 +++ b/include/linux/mnt_namespace.h
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270 @@ -6,11 +6,14 @@
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271 struct mnt_namespace;
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272 struct fs_struct;
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273 struct user_namespace;
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274 +struct vfsmount;
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275
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276 extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
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277 struct user_namespace *, struct fs_struct *);
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278 extern void put_mnt_ns(struct mnt_namespace *ns);
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279
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280 +extern int is_current_mnt_ns(struct vfsmount *mnt);
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281 +
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282 extern const struct file_operations proc_mounts_operations;
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283 extern const struct file_operations proc_mountinfo_operations;
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284 extern const struct file_operations proc_mountstats_operations;
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285 diff --git a/include/linux/splice.h b/include/linux/splice.h
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286 index 74b4911ac16dd..19789fbea5675 100644
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287 --- a/include/linux/splice.h
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288 +++ b/include/linux/splice.h
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289 @@ -87,4 +87,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *);
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290
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291 extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
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292 extern const struct pipe_buf_operations default_pipe_buf_ops;
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293 +
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294 +extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
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295 + loff_t *ppos, size_t len, unsigned int flags);
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296 +extern long do_splice_to(struct file *in, loff_t *ppos,
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297 + struct pipe_inode_info *pipe, size_t len,
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298 + unsigned int flags);
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299 #endif
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300 diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
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301 index dd13f865ad40e..fa6f5599a2a5e 100644
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302 --- a/kernel/locking/lockdep.c
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303 +++ b/kernel/locking/lockdep.c
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304 @@ -140,7 +140,7 @@ static struct lock_list list_entries[MAX_LOCKDEP_ENTRIES];
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305 unsigned long nr_lock_classes;
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306 static struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
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307
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308 -static inline struct lock_class *hlock_class(struct held_lock *hlock)
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309 +inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
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310 {
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311 if (!hlock->class_idx) {
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312 /*
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313 @@ -151,6 +151,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock)
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314 }
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315 return lock_classes + hlock->class_idx - 1;
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316 }
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317 +#define hlock_class(hlock) lockdep_hlock_class(hlock)
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318
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319 #ifdef CONFIG_LOCK_STAT
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320 static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats);
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