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- jessie 3.16.56-1+deb8u1
LOCK_MAY_WRITE(9) | The Linux VFS | LOCK_MAY_WRITE(9) |
NAME¶
lock_may_write - checks that the region is free of locksSYNOPSIS¶
int
lock_may_write(struct inode * inode,
loff_t start,
unsigned long len);
ARGUMENTS¶
inodethe inode that is being written
start
the first byte to write
len
the number of bytes to write
DESCRIPTION¶
Emulates Windows locking requirements. Whole-file mandatory locks (share modes) can prohibit a write and byte-range POSIX locks can prohibit a write if they overlap. N.B. this function is only ever called from knfsd and ownership of locks is never checked.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |