lock_may_read
Section: Kernel Hacker's Manual (9)
Updated: lock_may_read
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NAME
lock_may_read - checks that the region is free of locks
SYNOPSIS
int lock_may_read
(struct inode *inode,
loff_t start,
unsigned long len);
ARGUMENTS
- inode
-
the inode that is being read
- start
-
the first byte to read
- len
-
the number of bytes to read
DESCRIPTION
Emulates Windows locking requirements. Whole-file
mandatory locks (share modes) can prohibit a read and
byte-range POSIX locks can prohibit a read if they overlap.
N.B. this function is only ever called
from knfsd and ownership of locks is never checked.
Index
- NAME
-
- SYNOPSIS
-
- ARGUMENTS
-
- DESCRIPTION
-
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