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orangefs: revamp block sizes

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Now the superblock block size is PAGE_SIZE.  The inode block size is
PAGE_SIZE for directories and symlinks, but is the server-reported
block size for regular files.

The block size in the OrangeFS private inode is now deleted.  Stat
now reports PAGE_SIZE for directories and symlinks and the
server-reported block size for regular files.

The user-space visible change is that the block size for directores
and symlinks and the superblock is now PAGE_SIZE rather than the size of
the client-core shared memory buffers, which was typically four
megabytes.

Reported-by: Becky Ligon <ligon@clemson.edu>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Cc: hubcap@omnibond.com
Cc: walt@omnibond.com
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Martin Brandenburg
2018-05-31 16:36:59 +00:00
committed by Mike Marshall
parent b04e217704
commit 9f8fd53cd0
4 changed files with 8 additions and 15 deletions
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6
fs/orangefs/inode.c
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@@ -20,8 +20,8 @@ static int read_one_page(struct page *page)
int max_block;
ssize_t bytes_read = 0;
struct inode *inode = page->mapping->host;
const __u32 blocksize = PAGE_SIZE; /* inode->i_blksize */
const __u32 blockbits = PAGE_SHIFT; /* inode->i_blkbits */
const __u32 blocksize = PAGE_SIZE;
const __u32 blockbits = PAGE_SHIFT;
struct iov_iter to;
struct bio_vec bv = {.bv_page = page, .bv_len = PAGE_SIZE};
@@ -262,7 +262,6 @@ int orangefs_getattr(const struct path *path, struct kstat *stat,
/* override block size reported to stat */
orangefs_inode = ORANGEFS_I(inode);
stat->blksize = orangefs_inode->blksize;
if (request_mask & STATX_SIZE)
stat->result_mask = STATX_BASIC_STATS;
@@ -325,7 +324,6 @@ static int orangefs_init_iops(struct inode *inode)
case S_IFREG:
inode->i_op = &orangefs_file_inode_operations;
inode->i_fop = &orangefs_file_operations;
inode->i_blkbits = PAGE_SHIFT;
break;
case S_IFLNK:
inode->i_op = &orangefs_symlink_inode_operations;