Re: [PATCH] mm for fs: add truncate_pagecache_range

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

On Fri, 23 Mar 2012, Andrew Morton wrote:
> --- a/mm/truncate.c~mm-for-fs-add-truncate_pagecache_range-fix
> +++ a/mm/truncate.c
> @@ -639,6 +639,9 @@ int vmtruncate_range(struct inode *inode
>   * with on-disk format, and the filesystem would not have to deal with
>   * situations such as writepage being called for a page that has already
>   * had its underlying blocks deallocated.
> + *
> + * Must be called with inode->i_mapping->i_mutex held.

You catch me offguard: I forget whether that's an absolute requirement or
just commonly the case.  What do the other interfaces in truncate.c say ?-)

> + * Takes inode->i_mapping->i_mmap_mutex.

Yes, and inode->i_mapping->tree_lock.

>   */
>  void truncate_pagecache_range(struct inode *inode, loff_t lstart, loff_t lend)
>  {
> yes?



To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: .
Fight unfair telecom internet charges in Canada: sign
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>

[Site Home]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Tools]     [DDR & Rambus]     [Asterisk Internet PBX]     [Linux API]     [Monitors]

Add to Google Google PageRank Checking tool