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author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2015-02-16 15:59:06 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 17:56:03 -0800 |
commit | 4c0ccfef2e9f7418a6eb0bf07a2fc8f216365b18 (patch) | |
tree | ca1c0bebddf210eab5e5428bb0416d6bfc71495b /mm/filemap_xip.c | |
parent | f7ca90b160307d63aaedab8bd451c24a182db20f (diff) | |
download | op-kernel-dev-4c0ccfef2e9f7418a6eb0bf07a2fc8f216365b18.zip op-kernel-dev-4c0ccfef2e9f7418a6eb0bf07a2fc8f216365b18.tar.gz |
dax,ext2: replace xip_truncate_page with dax_truncate_page
It takes a get_block parameter just like nobh_truncate_page() and
block_truncate_page()
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap_xip.c')
-rw-r--r-- | mm/filemap_xip.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index 59fb387..8e3f99b 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -22,43 +22,3 @@ #include <asm/tlbflush.h> #include <asm/io.h> -/* - * truncate a page used for execute in place - * functionality is analog to block_truncate_page but does use get_xip_mem - * to get the page instead of page cache - */ -int -xip_truncate_page(struct address_space *mapping, loff_t from) -{ - pgoff_t index = from >> PAGE_CACHE_SHIFT; - unsigned offset = from & (PAGE_CACHE_SIZE-1); - unsigned blocksize; - unsigned length; - void *xip_mem; - unsigned long xip_pfn; - int err; - - BUG_ON(!mapping->a_ops->get_xip_mem); - - blocksize = 1 << mapping->host->i_blkbits; - length = offset & (blocksize - 1); - - /* Block boundary? Nothing to do */ - if (!length) - return 0; - - length = blocksize - length; - - err = mapping->a_ops->get_xip_mem(mapping, index, 0, - &xip_mem, &xip_pfn); - if (unlikely(err)) { - if (err == -ENODATA) - /* Hole? No need to truncate */ - return 0; - else - return err; - } - memset(xip_mem + offset, 0, length); - return 0; -} -EXPORT_SYMBOL_GPL(xip_truncate_page); |