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[PATCH] vfs: add lock owner argument to flush operation

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Pass the POSIX lock owner ID to the flush operation.

This is useful for filesystems which don't want to store any locking state
in inode->i_flock but want to handle locking/unlocking POSIX locks
internally.  FUSE is one such filesystem but I think it possible that some
network filesystems would need this also.

Also add a flag to indicate that a POSIX locking request was generated by
close(), so filesystems using the above feature won't send an extra locking
request in this case.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miklos Szeredi
2006-06-23 02:05:12 -07:00
committed by Linus Torvalds
parent ff7b86b820
commit 75e1fcc0b1
14 changed files with 16 additions and 16 deletions
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drivers/scsi/st.c
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@@ -1193,7 +1193,7 @@ static int st_open(struct inode *inode, struct file *filp)
/* Flush the tape buffer before close */
static int st_flush(struct file *filp)
static int st_flush(struct file *filp, fl_owner_t id)
{
int result = 0, result2;
unsigned char cmd[MAX_COMMAND_SIZE];