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12 | 12 | #include "ctree.h" |
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13 | 13 | |
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14 | 14 | enum btrfs_trans_state { |
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15 | | - TRANS_STATE_RUNNING = 0, |
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16 | | - TRANS_STATE_BLOCKED = 1, |
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17 | | - TRANS_STATE_COMMIT_START = 2, |
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18 | | - TRANS_STATE_COMMIT_DOING = 3, |
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19 | | - TRANS_STATE_UNBLOCKED = 4, |
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20 | | - TRANS_STATE_COMPLETED = 5, |
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21 | | - TRANS_STATE_MAX = 6, |
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| 15 | + TRANS_STATE_RUNNING, |
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| 16 | + TRANS_STATE_COMMIT_START, |
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| 17 | + TRANS_STATE_COMMIT_DOING, |
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| 18 | + TRANS_STATE_UNBLOCKED, |
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| 19 | + TRANS_STATE_COMPLETED, |
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| 20 | + TRANS_STATE_MAX, |
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22 | 21 | }; |
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23 | 22 | |
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24 | 23 | #define BTRFS_TRANS_HAVE_FREE_BGS 0 |
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.. | .. |
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39 | 38 | */ |
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40 | 39 | atomic_t num_writers; |
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41 | 40 | refcount_t use_count; |
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42 | | - atomic_t pending_ordered; |
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43 | 41 | |
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44 | 42 | unsigned long flags; |
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45 | 43 | |
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.. | .. |
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51 | 49 | time64_t start_time; |
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52 | 50 | wait_queue_head_t writer_wait; |
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53 | 51 | wait_queue_head_t commit_wait; |
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54 | | - wait_queue_head_t pending_wait; |
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55 | 52 | struct list_head pending_snapshots; |
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56 | | - struct list_head pending_chunks; |
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| 53 | + struct list_head dev_update_list; |
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57 | 54 | struct list_head switch_commits; |
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58 | 55 | struct list_head dirty_bgs; |
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59 | 56 | |
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.. | .. |
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74 | 71 | */ |
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75 | 72 | struct list_head io_bgs; |
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76 | 73 | struct list_head dropped_roots; |
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| 74 | + struct extent_io_tree pinned_extents; |
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77 | 75 | |
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78 | 76 | /* |
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79 | 77 | * we need to make sure block group deletion doesn't race with |
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.. | .. |
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82 | 80 | */ |
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83 | 81 | struct mutex cache_write_mutex; |
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84 | 82 | spinlock_t dirty_bgs_lock; |
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85 | | - unsigned int num_dirty_bgs; |
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86 | 83 | /* Protected by spin lock fs_info->unused_bgs_lock. */ |
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87 | 84 | struct list_head deleted_bgs; |
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88 | 85 | spinlock_t dropped_roots_lock; |
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89 | 86 | struct btrfs_delayed_ref_root delayed_refs; |
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90 | 87 | struct btrfs_fs_info *fs_info; |
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| 88 | + |
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| 89 | + /* |
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| 90 | + * Number of ordered extents the transaction must wait for before |
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| 91 | + * committing. These are ordered extents started by a fast fsync. |
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| 92 | + */ |
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| 93 | + atomic_t pending_ordered; |
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| 94 | + wait_queue_head_t pending_wait; |
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91 | 95 | }; |
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92 | 96 | |
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93 | 97 | #define __TRANS_FREEZABLE (1U << 0) |
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.. | .. |
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108 | 112 | #define TRANS_EXTWRITERS (__TRANS_START | __TRANS_ATTACH) |
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109 | 113 | |
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110 | 114 | #define BTRFS_SEND_TRANS_STUB ((void *)1) |
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| 115 | +#define BTRFS_DIO_SYNC_STUB ((void *)2) |
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111 | 116 | |
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112 | 117 | struct btrfs_trans_handle { |
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113 | 118 | u64 transid; |
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.. | .. |
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119 | 124 | struct btrfs_block_rsv *orig_rsv; |
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120 | 125 | refcount_t use_count; |
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121 | 126 | unsigned int type; |
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| 127 | + /* |
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| 128 | + * Error code of transaction abort, set outside of locks and must use |
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| 129 | + * the READ_ONCE/WRITE_ONCE access |
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| 130 | + */ |
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122 | 131 | short aborted; |
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123 | 132 | bool adding_csums; |
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124 | 133 | bool allocating_chunk; |
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125 | 134 | bool can_flush_pending_bgs; |
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126 | 135 | bool reloc_reserved; |
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127 | | - bool sync; |
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128 | 136 | bool dirty; |
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129 | 137 | struct btrfs_root *root; |
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130 | 138 | struct btrfs_fs_info *fs_info; |
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131 | 139 | struct list_head new_bgs; |
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132 | 140 | }; |
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| 141 | + |
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| 142 | +/* |
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| 143 | + * The abort status can be changed between calls and is not protected by locks. |
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| 144 | + * This accepts btrfs_transaction and btrfs_trans_handle as types. Once it's |
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| 145 | + * set to a non-zero value it does not change, so the macro should be in checks |
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| 146 | + * but is not necessary for further reads of the value. |
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| 147 | + */ |
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| 148 | +#define TRANS_ABORTED(trans) (unlikely(READ_ONCE((trans)->aborted))) |
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133 | 149 | |
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134 | 150 | struct btrfs_pending_snapshot { |
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135 | 151 | struct dentry *dentry; |
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.. | .. |
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143 | 159 | struct btrfs_block_rsv block_rsv; |
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144 | 160 | /* extra metadata reservation for relocation */ |
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145 | 161 | int error; |
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| 162 | + /* Preallocated anonymous block device number */ |
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| 163 | + dev_t anon_dev; |
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146 | 164 | bool readonly; |
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147 | 165 | struct list_head list; |
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148 | 166 | }; |
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149 | 167 | |
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150 | 168 | static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, |
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151 | | - struct inode *inode) |
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| 169 | + struct btrfs_inode *inode) |
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152 | 170 | { |
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153 | | - spin_lock(&BTRFS_I(inode)->lock); |
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154 | | - BTRFS_I(inode)->last_trans = trans->transaction->transid; |
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155 | | - BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; |
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156 | | - BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit; |
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157 | | - spin_unlock(&BTRFS_I(inode)->lock); |
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| 171 | + spin_lock(&inode->lock); |
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| 172 | + inode->last_trans = trans->transaction->transid; |
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| 173 | + inode->last_sub_trans = inode->root->log_transid; |
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| 174 | + inode->last_log_commit = inode->last_sub_trans - 1; |
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| 175 | + spin_unlock(&inode->lock); |
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158 | 176 | } |
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159 | 177 | |
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160 | 178 | /* |
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.. | .. |
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185 | 203 | unsigned int num_items); |
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186 | 204 | struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv( |
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187 | 205 | struct btrfs_root *root, |
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188 | | - unsigned int num_items, |
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189 | | - int min_factor); |
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| 206 | + unsigned int num_items); |
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190 | 207 | struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root); |
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191 | | -struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root); |
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| 208 | +struct btrfs_trans_handle *btrfs_join_transaction_spacecache(struct btrfs_root *root); |
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192 | 209 | struct btrfs_trans_handle *btrfs_join_transaction_nostart(struct btrfs_root *root); |
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193 | 210 | struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root); |
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194 | 211 | struct btrfs_trans_handle *btrfs_attach_transaction_barrier( |
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.. | .. |
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201 | 218 | int btrfs_commit_transaction(struct btrfs_trans_handle *trans); |
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202 | 219 | int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, |
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203 | 220 | int wait_for_unblock); |
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204 | | - |
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205 | | -/* |
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206 | | - * Try to commit transaction asynchronously, so this is safe to call |
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207 | | - * even holding a spinlock. |
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208 | | - * |
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209 | | - * It's done by informing transaction_kthread to commit transaction without |
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210 | | - * waiting for commit interval. |
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211 | | - */ |
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212 | | -static inline void btrfs_commit_transaction_locksafe( |
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213 | | - struct btrfs_fs_info *fs_info) |
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214 | | -{ |
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215 | | - set_bit(BTRFS_FS_NEED_ASYNC_COMMIT, &fs_info->flags); |
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216 | | - wake_up_process(fs_info->transaction_kthread); |
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217 | | -} |
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218 | 221 | int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans); |
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219 | 222 | int btrfs_should_end_transaction(struct btrfs_trans_handle *trans); |
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220 | 223 | void btrfs_throttle(struct btrfs_fs_info *fs_info); |
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.. | .. |
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222 | 225 | struct btrfs_root *root); |
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223 | 226 | int btrfs_write_marked_extents(struct btrfs_fs_info *fs_info, |
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224 | 227 | struct extent_io_tree *dirty_pages, int mark); |
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225 | | -int btrfs_wait_extents(struct btrfs_fs_info *fs_info, |
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226 | | - struct extent_io_tree *dirty_pages); |
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227 | 228 | int btrfs_wait_tree_log_extents(struct btrfs_root *root, int mark); |
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228 | 229 | int btrfs_transaction_blocked(struct btrfs_fs_info *info); |
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229 | 230 | int btrfs_transaction_in_commit(struct btrfs_fs_info *info); |
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.. | .. |
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231 | 232 | void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info); |
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232 | 233 | void btrfs_add_dropped_root(struct btrfs_trans_handle *trans, |
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233 | 234 | struct btrfs_root *root); |
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| 235 | +void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
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234 | 236 | |
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235 | 237 | #endif |
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