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orangefs: readahead adjustment

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Matthew Wilcox suggested that perhaps it could be "possible for
rac->file to be NULL if the caller doesn't have a struct file"...

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Mike Marshall 2021-05-18 08:07:21 -04:00
parent 13311e7425
commit 24523e45b4
1 changed files with 3 additions and 4 deletions
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7
fs/orangefs/inode.c
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@ -249,8 +249,7 @@ static void orangefs_readahead(struct readahead_control *rac)
{
loff_t offset;
struct iov_iter iter;
struct file *file = rac->file;
struct inode *inode = file->f_mapping->host;
struct inode *inode = rac->mapping->host;
struct xarray *i_pages;
struct page *page;
loff_t new_start = readahead_pos(rac);
@ -269,14 +268,14 @@ static void orangefs_readahead(struct readahead_control *rac)
readahead_expand(rac, new_start, new_len);
offset = readahead_pos(rac);
i_pages = &file->f_mapping->i_pages;
i_pages = &rac->mapping->i_pages;
iov_iter_xarray(&iter, READ, i_pages, offset, readahead_length(rac));
/* read in the pages. */
if ((ret = wait_for_direct_io(ORANGEFS_IO_READ, inode,
&offset, &iter, readahead_length(rac),
inode->i_size, NULL, NULL, file)) < 0)
inode->i_size, NULL, NULL, rac->file)) < 0)
gossip_debug(GOSSIP_FILE_DEBUG,
"%s: wait_for_direct_io failed. \n", __func__);
else