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Diffstat (limited to 'fs/xfs/xfs_bmap_util.c')
-rw-r--r--fs/xfs/xfs_bmap_util.c293
1 files changed, 31 insertions, 262 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 97f952caea74..5887e41c0323 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -18,31 +18,31 @@
*/
#include "xfs.h"
#include "xfs_fs.h"
+#include "xfs_shared.h"
#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
#include "xfs_bit.h"
-#include "xfs_log.h"
-#include "xfs_inum.h"
-#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
-#include "xfs_da_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_dinode.h"
+#include "xfs_da_format.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
+#include "xfs_trans.h"
#include "xfs_extfree_item.h"
#include "xfs_alloc.h"
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
+#include "xfs_bmap_btree.h"
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_quota.h"
#include "xfs_trans_space.h"
#include "xfs_trace.h"
#include "xfs_icache.h"
+#include "xfs_log.h"
+#include "xfs_dinode.h"
/* Kernel only BMAP related definitions and functions */
@@ -965,32 +965,12 @@ xfs_free_eofblocks(
return error;
}
-/*
- * xfs_alloc_file_space()
- * This routine allocates disk space for the given file.
- *
- * If alloc_type == 0, this request is for an ALLOCSP type
- * request which will change the file size. In this case, no
- * DMAPI event will be generated by the call. A TRUNCATE event
- * will be generated later by xfs_setattr.
- *
- * If alloc_type != 0, this request is for a RESVSP type
- * request, and a DMAPI DM_EVENT_WRITE will be generated if the
- * lower block boundary byte address is less than the file's
- * length.
- *
- * RETURNS:
- * 0 on success
- * errno on error
- *
- */
-STATIC int
+int
xfs_alloc_file_space(
- xfs_inode_t *ip,
+ struct xfs_inode *ip,
xfs_off_t offset,
xfs_off_t len,
- int alloc_type,
- int attr_flags)
+ int alloc_type)
{
xfs_mount_t *mp = ip->i_mount;
xfs_off_t count;
@@ -1232,24 +1212,11 @@ xfs_zero_remaining_bytes(
return error;
}
-/*
- * xfs_free_file_space()
- * This routine frees disk space for the given file.
- *
- * This routine is only called by xfs_change_file_space
- * for an UNRESVSP type call.
- *
- * RETURNS:
- * 0 on success
- * errno on error
- *
- */
-STATIC int
+int
xfs_free_file_space(
- xfs_inode_t *ip,
+ struct xfs_inode *ip,
xfs_off_t offset,
- xfs_off_t len,
- int attr_flags)
+ xfs_off_t len)
{
int committed;
int done;
@@ -1267,7 +1234,6 @@ xfs_free_file_space(
int rt;
xfs_fileoff_t startoffset_fsb;
xfs_trans_t *tp;
- int need_iolock = 1;
mp = ip->i_mount;
@@ -1284,20 +1250,15 @@ xfs_free_file_space(
startoffset_fsb = XFS_B_TO_FSB(mp, offset);
endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len);
- if (attr_flags & XFS_ATTR_NOLOCK)
- need_iolock = 0;
- if (need_iolock) {
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
- /* wait for the completion of any pending DIOs */
- inode_dio_wait(VFS_I(ip));
- }
+ /* wait for the completion of any pending DIOs */
+ inode_dio_wait(VFS_I(ip));
rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
ioffset = offset & ~(rounding - 1);
error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
ioffset, -1);
if (error)
- goto out_unlock_iolock;
+ goto out;
truncate_pagecache_range(VFS_I(ip), ioffset, -1);
/*
@@ -1311,7 +1272,7 @@ xfs_free_file_space(
error = xfs_bmapi_read(ip, startoffset_fsb, 1,
&imap, &nimap, 0);
if (error)
- goto out_unlock_iolock;
+ goto out;
ASSERT(nimap == 0 || nimap == 1);
if (nimap && imap.br_startblock != HOLESTARTBLOCK) {
xfs_daddr_t block;
@@ -1326,7 +1287,7 @@ xfs_free_file_space(
error = xfs_bmapi_read(ip, endoffset_fsb - 1, 1,
&imap, &nimap, 0);
if (error)
- goto out_unlock_iolock;
+ goto out;
ASSERT(nimap == 0 || nimap == 1);
if (nimap && imap.br_startblock != HOLESTARTBLOCK) {
ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
@@ -1412,27 +1373,23 @@ xfs_free_file_space(
xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
- out_unlock_iolock:
- if (need_iolock)
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ out:
return error;
error0:
xfs_bmap_cancel(&free_list);
error1:
xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
- xfs_iunlock(ip, need_iolock ? (XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL) :
- XFS_ILOCK_EXCL);
- return error;
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ goto out;
}
-STATIC int
+int
xfs_zero_file_space(
struct xfs_inode *ip,
xfs_off_t offset,
- xfs_off_t len,
- int attr_flags)
+ xfs_off_t len)
{
struct xfs_mount *mp = ip->i_mount;
uint granularity;
@@ -1453,9 +1410,6 @@ xfs_zero_file_space(
ASSERT(start_boundary >= offset);
ASSERT(end_boundary <= offset + len);
- if (!(attr_flags & XFS_ATTR_NOLOCK))
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
-
if (start_boundary < end_boundary - 1) {
/* punch out the page cache over the conversion range */
truncate_pagecache_range(VFS_I(ip), start_boundary,
@@ -1463,16 +1417,16 @@ xfs_zero_file_space(
/* convert the blocks */
error = xfs_alloc_file_space(ip, start_boundary,
end_boundary - start_boundary - 1,
- XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT,
- attr_flags);
+ XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT);
if (error)
- goto out_unlock;
+ goto out;
/* We've handled the interior of the range, now for the edges */
- if (start_boundary != offset)
+ if (start_boundary != offset) {
error = xfs_iozero(ip, offset, start_boundary - offset);
- if (error)
- goto out_unlock;
+ if (error)
+ goto out;
+ }
if (end_boundary != offset + len)
error = xfs_iozero(ip, end_boundary,
@@ -1486,197 +1440,12 @@ xfs_zero_file_space(
error = xfs_iozero(ip, offset, len);
}
-out_unlock:
- if (!(attr_flags & XFS_ATTR_NOLOCK))
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+out:
return error;
}
/*
- * xfs_change_file_space()
- * This routine allocates or frees disk space for the given file.
- * The user specified parameters are checked for alignment and size
- * limitations.
- *
- * RETURNS:
- * 0 on success
- * errno on error
- *
- */
-int
-xfs_change_file_space(
- xfs_inode_t *ip,
- int cmd,
- xfs_flock64_t *bf,
- xfs_off_t offset,
- int attr_flags)
-{
- xfs_mount_t *mp = ip->i_mount;
- int clrprealloc;
- int error;
- xfs_fsize_t fsize;
- int setprealloc;
- xfs_off_t startoffset;
- xfs_trans_t *tp;
- struct iattr iattr;
-
- if (!S_ISREG(ip->i_d.di_mode))
- return XFS_ERROR(EINVAL);
-
- switch (bf->l_whence) {
- case 0: /*SEEK_SET*/
- break;
- case 1: /*SEEK_CUR*/
- bf->l_start += offset;
- break;
- case 2: /*SEEK_END*/
- bf->l_start += XFS_ISIZE(ip);
- break;
- default:
- return XFS_ERROR(EINVAL);
- }
-
- /*
- * length of <= 0 for resv/unresv/zero is invalid. length for
- * alloc/free is ignored completely and we have no idea what userspace
- * might have set it to, so set it to zero to allow range
- * checks to pass.
- */
- switch (cmd) {
- case XFS_IOC_ZERO_RANGE:
- case XFS_IOC_RESVSP:
- case XFS_IOC_RESVSP64:
- case XFS_IOC_UNRESVSP:
- case XFS_IOC_UNRESVSP64:
- if (bf->l_len <= 0)
- return XFS_ERROR(EINVAL);
- break;
- default:
- bf->l_len = 0;
- break;
- }
-
- if (bf->l_start < 0 ||
- bf->l_start > mp->m_super->s_maxbytes ||
- bf->l_start + bf->l_len < 0 ||
- bf->l_start + bf->l_len >= mp->m_super->s_maxbytes)
- return XFS_ERROR(EINVAL);
-
- bf->l_whence = 0;
-
- startoffset = bf->l_start;
- fsize = XFS_ISIZE(ip);
-
- setprealloc = clrprealloc = 0;
- switch (cmd) {
- case XFS_IOC_ZERO_RANGE:
- error = xfs_zero_file_space(ip, startoffset, bf->l_len,
- attr_flags);
- if (error)
- return error;
- setprealloc = 1;
- break;
-
- case XFS_IOC_RESVSP:
- case XFS_IOC_RESVSP64:
- error = xfs_alloc_file_space(ip, startoffset, bf->l_len,
- XFS_BMAPI_PREALLOC, attr_flags);
- if (error)
- return error;
- setprealloc = 1;
- break;
-
- case XFS_IOC_UNRESVSP:
- case XFS_IOC_UNRESVSP64:
- if ((error = xfs_free_file_space(ip, startoffset, bf->l_len,
- attr_flags)))
- return error;
- break;
-
- case XFS_IOC_ALLOCSP:
- case XFS_IOC_ALLOCSP64:
- case XFS_IOC_FREESP:
- case XFS_IOC_FREESP64:
- /*
- * These operations actually do IO when extending the file, but
- * the allocation is done seperately to the zeroing that is
- * done. This set of operations need to be serialised against
- * other IO operations, such as truncate and buffered IO. We
- * need to take the IOLOCK here to serialise the allocation and
- * zeroing IO to prevent other IOLOCK holders (e.g. getbmap,
- * truncate, direct IO) from racing against the transient
- * allocated but not written state we can have here.
- */
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
- if (startoffset > fsize) {
- error = xfs_alloc_file_space(ip, fsize,
- startoffset - fsize, 0,
- attr_flags | XFS_ATTR_NOLOCK);
- if (error) {
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
- break;
- }
- }
-
- iattr.ia_valid = ATTR_SIZE;
- iattr.ia_size = startoffset;
-
- error = xfs_setattr_size(ip, &iattr,
- attr_flags | XFS_ATTR_NOLOCK);
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
-
- if (error)
- return error;
-
- clrprealloc = 1;
- break;
-
- default:
- ASSERT(0);
- return XFS_ERROR(EINVAL);
- }
-
- /*
- * update the inode timestamp, mode, and prealloc flag bits
- */
- tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
- error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
- if (error) {
- xfs_trans_cancel(tp, 0);
- return error;
- }
-
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
-
- if ((attr_flags & XFS_ATTR_DMI) == 0) {
- ip->i_d.di_mode &= ~S_ISUID;
-
- /*
- * Note that we don't have to worry about mandatory
- * file locking being disabled here because we only
- * clear the S_ISGID bit if the Group execute bit is
- * on, but if it was on then mandatory locking wouldn't
- * have been enabled.
- */
- if (ip->i_d.di_mode & S_IXGRP)
- ip->i_d.di_mode &= ~S_ISGID;
-
- xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- }
- if (setprealloc)
- ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
- else if (clrprealloc)
- ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
-
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- if (attr_flags & XFS_ATTR_SYNC)
- xfs_trans_set_sync(tp);
- return xfs_trans_commit(tp, 0);
-}
-
-/*
* We need to check that the format of the data fork in the temporary inode is
* valid for the target inode before doing the swap. This is not a problem with
* attr1 because of the fixed fork offset, but attr2 has a dynamically sized
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 17:24:38 +0100