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| author | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 07:07:56 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 07:07:56 +0100 |
| commit | bef986502fa398b1785a3979b1aa17cd902d3527 (patch) | |
| tree | b59c1afe7b1dfcc001b86e54863f550d7ddc8c34 /fs/nfs/internal.h | |
| parent | Input: handle errors from input_register_device in drivers/macintosh (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/iee... (diff) | |
| download | linux-bef986502fa398b1785a3979b1aa17cd902d3527.tar.xz linux-bef986502fa398b1785a3979b1aa17cd902d3527.zip | |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/usb/input/hid.h
Diffstat (limited to 'fs/nfs/internal.h')
| -rw-r--r-- | fs/nfs/internal.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index d205466233f6..a28f6ce2e131 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -217,3 +217,21 @@ void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize) if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0) sb->s_maxbytes = MAX_LFS_FILESIZE; } + +/* + * Determine the number of bytes of data the page contains + */ +static inline +unsigned int nfs_page_length(struct page *page) +{ + loff_t i_size = i_size_read(page->mapping->host); + + if (i_size > 0) { + pgoff_t end_index = (i_size - 1) >> PAGE_CACHE_SHIFT; + if (page->index < end_index) + return PAGE_CACHE_SIZE; + if (page->index == end_index) + return ((i_size - 1) & ~PAGE_CACHE_MASK) + 1; + } + return 0; +} |