diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-06-22 01:44:47 +0200 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-06-22 01:44:47 +0200 |
| commit | 5809d5e083a0e6c7121724635db2a1a6f9b90d52 (patch) | |
| tree | 8573712332f347b0cb53cb54f8bf8299d9959e51 /fs/xfs/xfs_log.c | |
| parent | xfs: return a void pointer from xfs_buf_offset (diff) | |
| download | linux-5809d5e083a0e6c7121724635db2a1a6f9b90d52.tar.xz linux-5809d5e083a0e6c7121724635db2a1a6f9b90d52.zip | |
xfs: use void pointers in log validation helpers
Compared to char pointers this saves us a lot of casting effort. Also
add another local variable to make the code easier to read.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_log.c')
| -rw-r--r-- | fs/xfs/xfs_log.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index eafd83b9d937..2102dfa93e33 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -109,7 +109,7 @@ xlog_ungrant_log_space( STATIC void xlog_verify_dest_ptr( struct xlog *log, - char *ptr); + void *ptr); STATIC void xlog_verify_grant_tail( struct xlog *log); @@ -1447,7 +1447,7 @@ xlog_alloc_log( iclog->ic_bp = bp; iclog->ic_data = bp->b_addr; #ifdef DEBUG - log->l_iclog_bak[i] = (xfs_caddr_t)&(iclog->ic_header); + log->l_iclog_bak[i] = &iclog->ic_header; #endif head = &iclog->ic_header; memset(head, 0, sizeof(xlog_rec_header_t)); @@ -3664,7 +3664,7 @@ xlog_ticket_alloc( void xlog_verify_dest_ptr( struct xlog *log, - char *ptr) + void *ptr) { int i; int good_ptr = 0; @@ -3767,8 +3767,7 @@ xlog_verify_iclog( xlog_op_header_t *ophead; xlog_in_core_t *icptr; xlog_in_core_2_t *xhdr; - xfs_caddr_t ptr; - xfs_caddr_t base_ptr; + void *base_ptr, *ptr, *p; ptrdiff_t field_offset; __uint8_t clientid; int len, i, j, k, op_len; @@ -3788,9 +3787,9 @@ xlog_verify_iclog( if (iclog->ic_header.h_magicno != cpu_to_be32(XLOG_HEADER_MAGIC_NUM)) xfs_emerg(log->l_mp, "%s: invalid magic num", __func__); - ptr = (xfs_caddr_t) &iclog->ic_header; - for (ptr += BBSIZE; ptr < ((xfs_caddr_t)&iclog->ic_header) + count; - ptr += BBSIZE) { + base_ptr = ptr = &iclog->ic_header; + p = &iclog->ic_header; + for (ptr += BBSIZE; ptr < base_ptr + count; ptr += BBSIZE) { if (*(__be32 *)ptr == cpu_to_be32(XLOG_HEADER_MAGIC_NUM)) xfs_emerg(log->l_mp, "%s: unexpected magic num", __func__); @@ -3798,16 +3797,15 @@ xlog_verify_iclog( /* check fields */ len = be32_to_cpu(iclog->ic_header.h_num_logops); - ptr = iclog->ic_datap; - base_ptr = ptr; - ophead = (xlog_op_header_t *)ptr; + base_ptr = ptr = iclog->ic_datap; + ophead = ptr; xhdr = iclog->ic_data; for (i = 0; i < len; i++) { - ophead = (xlog_op_header_t *)ptr; + ophead = ptr; /* clientid is only 1 byte */ - field_offset = (ptrdiff_t) - ((xfs_caddr_t)&(ophead->oh_clientid) - base_ptr); + p = &ophead->oh_clientid; + field_offset = p - base_ptr; if (!syncing || (field_offset & 0x1ff)) { clientid = ophead->oh_clientid; } else { @@ -3829,8 +3827,8 @@ xlog_verify_iclog( (unsigned long)field_offset); /* check length */ - field_offset = (ptrdiff_t) - ((xfs_caddr_t)&(ophead->oh_len) - base_ptr); + p = &ophead->oh_len; + field_offset = p - base_ptr; if (!syncing || (field_offset & 0x1ff)) { op_len = be32_to_cpu(ophead->oh_len); } else { |