Function report |
Source Code:fs\locks.c |
Create Date:2022-07-28 20:25:29 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:posix_lock_inode
Proto:static int posix_lock_inode(struct inode *inode, struct file_lock *request, struct file_lock *conflock)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct inode * | inode | |
struct file_lock * | request | |
struct file_lock * | conflock |
1118 | bool added = false |
1121 | ctx = locks_get_lock_context(inode, fl_type) |
1131 | If Not (fl_flags & trying to lock, just looking ) && ( fl_type != F_UNLCK || fl_start != 0 || fl_end != OFFSET_MAX ) Then |
1138 | percpu_down_read( & file_rwsem) |
1147 | If Not Determine if lock sys_fl blocks lock caller_fl. POSIX specific* checking before calling the locks_conflict(). Then Continue |
1152 | If Not (fl_flags & A blocking lock ) Then Go to out |
1171 | Go to out |
1176 | error = 0 |
1177 | If fl_flags & trying to lock, just looking Then Go to out |
1182 | If Check whether two locks have the same owner. Then Break |
1188 | If Not Check whether two locks have the same owner. Then Break |
1224 | Else |
1247 | If added Then |
1248 | locks_delete_lock_ctx(fl, & dispose) |
1249 | Continue |
1261 | locks_copy_lock(new_fl, request) |
1263 | new_fl = NULL |
1265 | locks_delete_lock_ctx(fl, & dispose) |
1266 | added = true |
1280 | error = 0 |
1281 | If Not added Then |
1283 | If fl_flags & when unlocking, test for existence Then error = -ENOENT |
1285 | Go to out |
1288 | If Not new_fl Then |
1292 | locks_copy_lock(new_fl, request) |
1293 | locks_move_blocks(new_fl, request) |
1296 | new_fl = NULL |
1298 | If right Then |
1304 | new_fl2 = NULL |
1305 | locks_copy_lock(left, right) |
1311 | If left Then |
1315 | out : |
1316 | spin_unlock( & flc_lock) |
1317 | percpu_up_read( & file_rwsem) |
1321 | If new_fl Then Free a lock which is not in use. |
1323 | If new_fl2 Then Free a lock which is not in use. |
1325 | locks_dispose_list( & dispose) |
1326 | trace_posix_lock_inode(inode, request, error) |
1328 | Return error |
Name | Describe |
---|---|
posix_lock_file | Apply a POSIX-style lock to a file |
posix_lock_inode_wait | posix_lock_inode_wait - Apply a POSIX-style lock to a file*@inode: inode of file to which lock request should be applied*@fl: The lock to be applied* Apply a POSIX style lock request to an inode. |
Source code conversion tool public plug-in interface | X |
---|---|
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |