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-rw-r--r--fs/autofs4/expire.c4
-rw-r--r--fs/binfmt_elf_fdpic.c4
-rw-r--r--fs/buffer.c10
-rw-r--r--fs/configfs/symlink.c2
-rw-r--r--fs/exec.c7
-rw-r--r--fs/ioctl.c75
-rw-r--r--fs/nfs/file.c6
-rw-r--r--fs/notify/inotify/inotify_user.c2
-rw-r--r--fs/ocfs2/dcache.c15
-rw-r--r--fs/ocfs2/dir.c4
-rw-r--r--fs/ocfs2/export.c9
-rw-r--r--fs/ocfs2/journal.h5
-rw-r--r--fs/ocfs2/namei.c4
-rw-r--r--fs/ocfs2/suballoc.c21
-rw-r--r--fs/proc/array.c13
-rw-r--r--fs/proc/base.c5
-rw-r--r--fs/proc/meminfo.c2
-rw-r--r--fs/proc/task_mmu.c4
-rw-r--r--fs/xfs/xfs_bmap.c192
-rw-r--r--fs/xfs/xfs_inode.c2
-rw-r--r--fs/xfs/xfs_mount.c3
21 files changed, 239 insertions, 150 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 75f7ddacf7d..3077d8f1652 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -70,8 +70,10 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
* Otherwise it's an offset mount and we need to check
* if we can umount its mount, if there is one.
*/
- if (!d_mountpoint(dentry))
+ if (!d_mountpoint(dentry)) {
+ status = 0;
goto done;
+ }
}
/* Update the expiry counter if fs is busy */
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 70cfc4b84ae..fdb66faa24f 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1388,7 +1388,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
prstatus->pr_sigpend = p->pending.signal.sig[0];
prstatus->pr_sighold = p->blocked.sig[0];
prstatus->pr_pid = task_pid_vnr(p);
- prstatus->pr_ppid = task_pid_vnr(p->parent);
+ prstatus->pr_ppid = task_pid_vnr(p->real_parent);
prstatus->pr_pgrp = task_pgrp_vnr(p);
prstatus->pr_sid = task_session_vnr(p);
if (thread_group_leader(p)) {
@@ -1433,7 +1433,7 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_psargs[len] = 0;
psinfo->pr_pid = task_pid_vnr(p);
- psinfo->pr_ppid = task_pid_vnr(p->parent);
+ psinfo->pr_ppid = task_pid_vnr(p->real_parent);
psinfo->pr_pgrp = task_pgrp_vnr(p);
psinfo->pr_sid = task_session_vnr(p);
diff --git a/fs/buffer.c b/fs/buffer.c
index b3e5be7514f..aed297739eb 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2397,7 +2397,8 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
if ((page->mapping != inode->i_mapping) ||
(page_offset(page) > size)) {
/* page got truncated out from underneath us */
- goto out_unlock;
+ unlock_page(page);
+ goto out;
}
/* page is wholly or partially inside EOF */
@@ -2411,14 +2412,15 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
ret = block_commit_write(page, 0, end);
if (unlikely(ret)) {
+ unlock_page(page);
if (ret == -ENOMEM)
ret = VM_FAULT_OOM;
else /* -ENOSPC, -EIO, etc */
ret = VM_FAULT_SIGBUS;
- }
+ } else
+ ret = VM_FAULT_LOCKED;
-out_unlock:
- unlock_page(page);
+out:
return ret;
}
diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
index 932a92b3148..c8afa6b1d91 100644
--- a/fs/configfs/symlink.c
+++ b/fs/configfs/symlink.c
@@ -135,7 +135,7 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna
struct path path;
struct configfs_dirent *sd;
struct config_item *parent_item;
- struct config_item *target_item;
+ struct config_item *target_item = NULL;
struct config_item_type *type;
ret = -EPERM; /* What lack-of-symlink returns */
diff --git a/fs/exec.c b/fs/exec.c
index a3a8ce83940..639177b0eea 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -69,17 +69,18 @@ int suid_dumpable = 0;
static LIST_HEAD(formats);
static DEFINE_RWLOCK(binfmt_lock);
-int register_binfmt(struct linux_binfmt * fmt)
+int __register_binfmt(struct linux_binfmt * fmt, int insert)
{
if (!fmt)
return -EINVAL;
write_lock(&binfmt_lock);
- list_add(&fmt->lh, &formats);
+ insert ? list_add(&fmt->lh, &formats) :
+ list_add_tail(&fmt->lh, &formats);
write_unlock(&binfmt_lock);
return 0;
}
-EXPORT_SYMBOL(register_binfmt);
+EXPORT_SYMBOL(__register_binfmt);
void unregister_binfmt(struct linux_binfmt * fmt)
{
diff --git a/fs/ioctl.c b/fs/ioctl.c
index ac2d47e4392..82d9c42b8ba 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -258,7 +258,7 @@ int __generic_block_fiemap(struct inode *inode,
long long length = 0, map_len = 0;
u64 logical = 0, phys = 0, size = 0;
u32 flags = FIEMAP_EXTENT_MERGED;
- int ret = 0;
+ int ret = 0, past_eof = 0, whole_file = 0;
if ((ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC)))
return ret;
@@ -266,6 +266,9 @@ int __generic_block_fiemap(struct inode *inode,
start_blk = logical_to_blk(inode, start);
length = (long long)min_t(u64, len, i_size_read(inode));
+ if (length < len)
+ whole_file = 1;
+
map_len = length;
do {
@@ -282,11 +285,26 @@ int __generic_block_fiemap(struct inode *inode,
/* HOLE */
if (!buffer_mapped(&tmp)) {
+ length -= blk_to_logical(inode, 1);
+ start_blk++;
+
+ /*
+ * we want to handle the case where there is an
+ * allocated block at the front of the file, and then
+ * nothing but holes up to the end of the file properly,
+ * to make sure that extent at the front gets properly
+ * marked with FIEMAP_EXTENT_LAST
+ */
+ if (!past_eof &&
+ blk_to_logical(inode, start_blk) >=
+ blk_to_logical(inode, 0)+i_size_read(inode))
+ past_eof = 1;
+
/*
* first hole after going past the EOF, this is our
* last extent
*/
- if (length <= 0) {
+ if (past_eof && size) {
flags = FIEMAP_EXTENT_MERGED|FIEMAP_EXTENT_LAST;
ret = fiemap_fill_next_extent(fieinfo, logical,
phys, size,
@@ -294,15 +312,37 @@ int __generic_block_fiemap(struct inode *inode,
break;
}
- length -= blk_to_logical(inode, 1);
-
/* if we have holes up to/past EOF then we're done */
- if (length <= 0)
+ if (length <= 0 || past_eof)
break;
-
- start_blk++;
} else {
- if (length <= 0 && size) {
+ /*
+ * we have gone over the length of what we wanted to
+ * map, and it wasn't the entire file, so add the extent
+ * we got last time and exit.
+ *
+ * This is for the case where say we want to map all the
+ * way up to the second to the last block in a file, but
+ * the last block is a hole, making the second to last
+ * block FIEMAP_EXTENT_LAST. In this case we want to
+ * see if there is a hole after the second to last block
+ * so we can mark it properly. If we found data after
+ * we exceeded the length we were requesting, then we
+ * are good to go, just add the extent to the fieinfo
+ * and break
+ */
+ if (length <= 0 && !whole_file) {
+ ret = fiemap_fill_next_extent(fieinfo, logical,
+ phys, size,
+ flags);
+ break;
+ }
+
+ /*
+ * if size != 0 then we know we already have an extent
+ * to add, so add it.
+ */
+ if (size) {
ret = fiemap_fill_next_extent(fieinfo, logical,
phys, size,
flags);
@@ -319,19 +359,14 @@ int __generic_block_fiemap(struct inode *inode,
start_blk += logical_to_blk(inode, size);
/*
- * if we are past the EOF we need to loop again to see
- * if there is a hole so we can mark this extent as the
- * last one, and if not keep mapping things until we
- * find a hole, or we run out of slots in the extent
- * array
+ * If we are past the EOF, then we need to make sure as
+ * soon as we find a hole that the last extent we found
+ * is marked with FIEMAP_EXTENT_LAST
*/
- if (length <= 0)
- continue;
-
- ret = fiemap_fill_next_extent(fieinfo, logical, phys,
- size, flags);
- if (ret)
- break;
+ if (!past_eof &&
+ logical+size >=
+ blk_to_logical(inode, 0)+i_size_read(inode))
+ past_eof = 1;
}
cond_resched();
} while (1);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 5a97bcfe03e..ec7e27d00bc 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -517,10 +517,10 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
ret = nfs_updatepage(filp, page, 0, pagelen);
out_unlock:
+ if (!ret)
+ return VM_FAULT_LOCKED;
unlock_page(page);
- if (ret)
- ret = VM_FAULT_SIGBUS;
- return ret;
+ return VM_FAULT_SIGBUS;
}
static struct vm_operations_struct nfs_file_vm_ops = {
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index bed766e435b..1634319e240 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -220,7 +220,7 @@ static struct inotify_kernel_event * kernel_event(s32 wd, u32 mask, u32 cookie,
rem = 0;
}
- kevent->name = kmalloc(len + rem, GFP_KERNEL);
+ kevent->name = kmalloc(len + rem, GFP_NOFS);
if (unlikely(!kevent->name)) {
kmem_cache_free(event_cachep, kevent);
return NULL;
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 7d604480557..b574431a031 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -290,6 +290,21 @@ out_attach:
else
mlog_errno(ret);
+ /*
+ * In case of error, manually free the allocation and do the iput().
+ * We need to do this because error here means no d_instantiate(),
+ * which means iput() will not be called during dput(dentry).
+ */
+ if (ret < 0 && !alias) {
+ ocfs2_lock_res_free(&dl->dl_lockres);
+ BUG_ON(dl->dl_count != 1);
+ spin_lock(&dentry_attach_lock);
+ dentry->d_fsdata = NULL;
+ spin_unlock(&dentry_attach_lock);
+ kfree(dl);
+ iput(inode);
+ }
+
dput(alias);
return ret;
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index e71160cda11..c5752305627 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -2697,7 +2697,7 @@ static int ocfs2_dx_dir_index_block(struct inode *dir,
u32 *num_dx_entries,
struct buffer_head *dirent_bh)
{
- int ret, namelen, i;
+ int ret = 0, namelen, i;
char *de_buf, *limit;
struct ocfs2_dir_entry *de;
struct buffer_head *dx_leaf_bh;
@@ -2934,7 +2934,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
*/
BUG_ON(alloc > 2);
- ret = ocfs2_reserve_clusters(osb, alloc, &data_ac);
+ ret = ocfs2_reserve_clusters(osb, alloc + dx_alloc, &data_ac);
if (ret) {
mlog_errno(ret);
goto out;
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index de3da8eb558..15713cbb865 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -100,7 +100,8 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
/* If the inode allocator bit is clear, this inode must be stale */
if (!set) {
- mlog(0, "inode %llu suballoc bit is clear\n", blkno);
+ mlog(0, "inode %llu suballoc bit is clear\n",
+ (unsigned long long)blkno);
status = -ESTALE;
goto unlock_nfs_sync;
}
@@ -114,7 +115,7 @@ check_err:
if (status < 0) {
if (status == -ESTALE) {
mlog(0, "stale inode ino: %llu generation: %u\n",
- blkno, handle->ih_generation);
+ (unsigned long long)blkno, handle->ih_generation);
}
result = ERR_PTR(status);
goto bail;
@@ -129,8 +130,8 @@ check_err:
check_gen:
if (handle->ih_generation != inode->i_generation) {
iput(inode);
- mlog(0, "stale inode ino: %llu generation: %u\n", blkno,
- handle->ih_generation);
+ mlog(0, "stale inode ino: %llu generation: %u\n",
+ (unsigned long long)blkno, handle->ih_generation);
result = ERR_PTR(-ESTALE);
goto bail;
}
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index 619dd7f6c05..eb7b76331eb 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -437,8 +437,9 @@ static inline int ocfs2_unlink_credits(struct super_block *sb)
}
/* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry +
- * inode alloc group descriptor + orphan dir index leaf */
-#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 3)
+ * inode alloc group descriptor + orphan dir index root +
+ * orphan dir index leaf */
+#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 4)
/* dinode update, old dir dinode update, new dir dinode update, old
* dir dir entry, new dir dir entry, dir entry update for renaming
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 2220f93f668..33464c6b60a 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1025,10 +1025,8 @@ static int ocfs2_rename(struct inode *old_dir,
struct inode *orphan_dir = NULL;
struct ocfs2_dinode *newfe = NULL;
char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
- struct buffer_head *orphan_entry_bh = NULL;
struct buffer_head *newfe_bh = NULL;
struct buffer_head *old_inode_bh = NULL;
- struct buffer_head *insert_entry_bh = NULL;
struct ocfs2_super *osb = NULL;
u64 newfe_blkno, old_de_ino;
handle_t *handle = NULL;
@@ -1455,8 +1453,6 @@ bail:
brelse(old_inode_bh);
brelse(old_dir_bh);
brelse(new_dir_bh);
- brelse(orphan_entry_bh);
- brelse(insert_entry_bh);
mlog_exit(status);
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index b4ca5911caa..8439f6b324b 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -2197,26 +2197,29 @@ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno,
struct buffer_head *inode_bh = NULL;
struct ocfs2_dinode *inode_fe;
- mlog_entry("blkno: %llu\n", blkno);
+ mlog_entry("blkno: %llu\n", (unsigned long long)blkno);
/* dirty read disk */
status = ocfs2_read_blocks_sync(osb, blkno, 1, &inode_bh);
if (status < 0) {
- mlog(ML_ERROR, "read block %llu failed %d\n", blkno, status);
+ mlog(ML_ERROR, "read block %llu failed %d\n",
+ (unsigned long long)blkno, status);
goto bail;
}
inode_fe = (struct ocfs2_dinode *) inode_bh->b_data;
if (!OCFS2_IS_VALID_DINODE(inode_fe)) {
- mlog(ML_ERROR, "invalid inode %llu requested\n", blkno);
+ mlog(ML_ERROR, "invalid inode %llu requested\n",
+ (unsigned long long)blkno);
status = -EINVAL;
goto bail;
}
- if (le16_to_cpu(inode_fe->i_suballoc_slot) != OCFS2_INVALID_SLOT &&
+ if (le16_to_cpu(inode_fe->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT &&
(u32)le16_to_cpu(inode_fe->i_suballoc_slot) > osb->max_slots - 1) {
mlog(ML_ERROR, "inode %llu has invalid suballoc slot %u\n",
- blkno, (u32)le16_to_cpu(inode_fe->i_suballoc_slot));
+ (unsigned long long)blkno,
+ (u32)le16_to_cpu(inode_fe->i_suballoc_slot));
status = -EINVAL;
goto bail;
}
@@ -2251,7 +2254,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
u64 bg_blkno;
int status;
- mlog_entry("blkno: %llu bit: %u\n", blkno, (unsigned int)bit);
+ mlog_entry("blkno: %llu bit: %u\n", (unsigned long long)blkno,
+ (unsigned int)bit);
alloc_fe = (struct ocfs2_dinode *)alloc_bh->b_data;
if ((bit + 1) > ocfs2_bits_per_group(&alloc_fe->id2.i_chain)) {
@@ -2266,7 +2270,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
status = ocfs2_read_group_descriptor(suballoc, alloc_fe, bg_blkno,
&group_bh);
if (status < 0) {
- mlog(ML_ERROR, "read group %llu failed %d\n", bg_blkno, status);
+ mlog(ML_ERROR, "read group %llu failed %d\n",
+ (unsigned long long)bg_blkno, status);
goto bail;
}
@@ -2300,7 +2305,7 @@ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res)
struct inode *inode_alloc_inode;
struct buffer_head *alloc_bh = NULL;
- mlog_entry("blkno: %llu", blkno);
+ mlog_entry("blkno: %llu", (unsigned long long)blkno);
status = ocfs2_get_suballoc_slot_bit(osb, blkno, &suballoc_slot,
&suballoc_bit);
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 7e4877d9dcb..725a650bbbb 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -80,6 +80,7 @@
#include <linux/delayacct.h>
#include <linux/seq_file.h>
#include <linux/pid_namespace.h>
+#include <linux/ptrace.h>
#include <linux/tracehook.h>
#include <asm/pgtable.h>
@@ -352,6 +353,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
char state;
pid_t ppid = 0, pgid = -1, sid = -1;
int num_threads = 0;
+ int permitted;
struct mm_struct *mm;
unsigned long long start_time;
unsigned long cmin_flt = 0, cmaj_flt = 0;
@@ -364,11 +366,14 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
state = *get_task_state(task);
vsize = eip = esp = 0;
+ permitted = ptrace_may_access(task, PTRACE_MODE_READ);
mm = get_task_mm(task);
if (mm) {
vsize = task_vsize(mm);
- eip = KSTK_EIP(task);
- esp = KSTK_ESP(task);
+ if (permitted) {
+ eip = KSTK_EIP(task);
+ esp = KSTK_ESP(task);
+ }
}
get_task_comm(tcomm, task);
@@ -424,7 +429,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
unlock_task_sighand(task, &flags);
}
- if (!whole || num_threads < 2)
+ if (permitted && (!whole || num_threads < 2))
wchan = get_wchan(task);
if (!whole) {
min_flt = task->min_flt;
@@ -476,7 +481,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
rsslim,
mm ? mm->start_code : 0,
mm ? mm->end_code : 0,
- mm ? mm->start_stack : 0,
+ (permitted && mm) ? mm->start_stack : 0,
esp,
eip,
/* The signal information here is obsolete.
diff --git a/fs/proc/base.c b/fs/proc/base.c
index aa763ab0077..fb45615943c 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -322,7 +322,10 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer)
wchan = get_wchan(task);
if (lookup_symbol_name(wchan, symname) < 0)
- return sprintf(buffer, "%lu", wchan);
+ if (!ptrace_may_access(task, PTRACE_MODE_READ))
+ return 0;
+ else
+ return sprintf(buffer, "%lu", wchan);
else
return sprintf(buffer, "%s", symname);
}
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 74ea974f5ca..c6b0302af4c 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -35,7 +35,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#define K(x) ((x) << (PAGE_SHIFT - 10))
si_meminfo(&i);
si_swapinfo(&i);
- committed = atomic_long_read(&vm_committed_space);
+ committed = percpu_counter_read_positive(&vm_committed_as);
allowed = ((totalram_pages - hugetlb_total_pages())
* sysctl_overcommit_ratio / 100) + total_swap_pages;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 39e4ad4f59f..6f61b7cc32e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -665,6 +665,10 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
goto out_task;
ret = 0;
+
+ if (!count)
+ goto out_task;
+
mm = get_task_mm(task);
if (!mm)
goto out_task;
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 3a6ed426327..ca7c6005a48 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -5880,7 +5880,7 @@ xfs_getbmap(
void *arg) /* formatter arg */
{
__int64_t bmvend; /* last block requested */
- int error; /* return value */
+ int error = 0; /* return value */
__int64_t fixlen; /* length for -1 case */
int i; /* extent number */
int lock; /* lock state */
@@ -5890,39 +5890,18 @@ xfs_getbmap(
int nexleft; /* # of user extents left */
int subnex; /* # of bmapi's can do */
int nmap; /* number of map entries */
- struct getbmapx out; /* output structure */
+ struct getbmapx *out; /* output structure */
int whichfork; /* data or attr fork */
int prealloced; /* this is a file with
* preallocated data space */
int iflags; /* interface flags */
int bmapi_flags; /* flags for xfs_bmapi */
+ int cur_ext = 0;
mp = ip->i_mount;
iflags = bmv->bmv_iflags;
-
whichfork = iflags & BMV_IF_ATTRFORK ? XFS_ATTR_FORK : XFS_DATA_FORK;
- /* If the BMV_IF_NO_DMAPI_READ interface bit specified, do not
- * generate a DMAPI read event. Otherwise, if the DM_EVENT_READ
- * bit is set for the file, generate a read event in order
- * that the DMAPI application may do its thing before we return
- * the extents. Usually this means restoring user file data to
- * regions of the file that look like holes.
- *
- * The "old behavior" (from XFS_IOC_GETBMAP) is to not specify
- * BMV_IF_NO_DMAPI_READ so that read events are generated.
- * If this were not true, callers of ioctl( XFS_IOC_GETBMAP )
- * could misinterpret holes in a DMAPI file as true holes,
- * when in fact they may represent offline user data.
- */
- if ((iflags & BMV_IF_NO_DMAPI_READ) == 0 &&
- DM_EVENT_ENABLED(ip, DM_EVENT_READ) &&
- whichfork == XFS_DATA_FORK) {
- error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip, 0, 0, 0, NULL);
- if (error)
- return XFS_ERROR(error);
- }
-
if (whichfork == XFS_ATTR_FORK) {
if (XFS_IFORK_Q(ip)) {
if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS &&
@@ -5936,11 +5915,37 @@ xfs_getbmap(
ip->i_mount);
return XFS_ERROR(EFSCORRUPTED);
}
- } else if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS &&
- ip->i_d.di_format != XFS_DINODE_FMT_BTREE &&
- ip->i_d.di_format != XFS_DINODE_FMT_LOCAL)
- return XFS_ERROR(EINVAL);
- if (whichfork == XFS_DATA_FORK) {
+
+ prealloced = 0;
+ fixlen = 1LL << 32;
+ } else {
+ /*
+ * If the BMV_IF_NO_DMAPI_READ interface bit specified, do
+ * not generate a DMAPI read event. Otherwise, if the
+ * DM_EVENT_READ bit is set for the file, generate a read
+ * event in order that the DMAPI application may do its thing
+ * before we return the extents. Usually this means restoring
+ * user file data to regions of the file that look like holes.
+ *
+ * The "old behavior" (from XFS_IOC_GETBMAP) is to not specify
+ * BMV_IF_NO_DMAPI_READ so that read events are generated.
+ * If this were not true, callers of ioctl(XFS_IOC_GETBMAP)
+ * could misinterpret holes in a DMAPI file as true holes,
+ * when in fact they may represent offline user data.
+ */
+ if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) &&
+ !(iflags & BMV_IF_NO_DMAPI_READ)) {
+ error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip,
+ 0, 0, 0, NULL);
+ if (error)
+ return XFS_ERROR(error);
+ }
+
+ if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS &&
+ ip->i_d.di_format != XFS_DINODE_FMT_BTREE &&
+ ip->i_d.di_format != XFS_DINODE_FMT_LOCAL)
+ return XFS_ERROR(EINVAL);
+
if (xfs_get_extsz_hint(ip) ||
ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){
prealloced = 1;
@@ -5949,42 +5954,41 @@ xfs_getbmap(
prealloced = 0;
fixlen = ip->i_size;
}
- } else {
- prealloced = 0;
- fixlen = 1LL << 32;
}
if (bmv->bmv_length == -1) {
fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen));
- bmv->bmv_length = MAX( (__int64_t)(fixlen - bmv->bmv_offset),
- (__int64_t)0);
- } else if (bmv->bmv_length < 0)
- return XFS_ERROR(EINVAL);
- if (bmv->bmv_length == 0) {
+ bmv->bmv_length =
+ max_t(__int64_t, fixlen - bmv->bmv_offset, 0);
+ } else if (bmv->bmv_length == 0) {
bmv->bmv_entries = 0;
return 0;
+ } else if (bmv->bmv_length < 0) {
+ return XFS_ERROR(EINVAL);
}
+
nex = bmv->bmv_count - 1;
if (nex <= 0)
return XFS_ERROR(EINVAL);
bmvend = bmv->bmv_offset + bmv->bmv_length;
- xfs_ilock(ip, XFS_IOLOCK_SHARED);
- if (((iflags & BMV_IF_DELALLOC) == 0) &&
- (whichfork == XFS_DATA_FORK) &&
- (ip->i_delayed_blks || ip->i_size > ip->i_d.di_size)) {
- /* xfs_fsize_t last_byte = xfs_file_last_byte(ip); */
- error = xfs_flush_pages(ip, (xfs_off_t)0,
- -1, 0, FI_REMAPF);
- if (error) {
- xfs_iunlock(ip, XFS_IOLOCK_SHARED);
- return error;
+ if (bmv->bmv_count > ULONG_MAX / sizeof(struct getbmapx))
+ return XFS_ERROR(ENOMEM);
+ out = kmem_zalloc(bmv->bmv_count * sizeof(struct getbmapx), KM_MAYFAIL);
+ if (!out)
+ return XFS_ERROR(ENOMEM);
+
+ xfs_ilock(ip, XFS_IOLOCK_SHARED);
+ if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) {
+ if (ip->i_delayed_blks || ip->i_size > ip->i_d.di_size) {
+ error = xfs_flush_pages(ip, 0, -1, 0, FI_REMAPF);
+ if (error)
+ goto out_unlock_iolock;
}
- }
- ASSERT(whichfork == XFS_ATTR_FORK || (iflags & BMV_IF_DELALLOC) ||
- ip->i_delayed_blks == 0);
+ ASSERT(ip->i_delayed_blks == 0);
+ }
lock = xfs_ilock_map_shared(ip);
@@ -5995,23 +5999,25 @@ xfs_getbmap(
if (nex > XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1)
nex = XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1;
- bmapi_flags = xfs_bmapi_aflag(whichfork) |
- ((iflags & BMV_IF_PREALLOC) ? 0 : XFS_BMAPI_IGSTATE);
+ bmapi_flags = xfs_bmapi_aflag(whichfork);
+ if (!(iflags & BMV_IF_PREALLOC))
+ bmapi_flags |= XFS_BMAPI_IGSTATE;
/*
* Allocate enough space to handle "subnex" maps at a time.
*/
+ error = ENOMEM;
subnex = 16;
- map = kmem_alloc(subnex * sizeof(*map), KM_SLEEP);
+ map = kmem_alloc(subnex * sizeof(*map), KM_MAYFAIL);
+ if (!map)
+ goto out_unlock_ilock;
bmv->bmv_entries = 0;
- if ((XFS_IFORK_NEXTENTS(ip, whichfork) == 0)) {
- if (((iflags & BMV_IF_DELALLOC) == 0) ||
- whichfork == XFS_ATTR_FORK) {
- error = 0;
- goto unlock_and_return;
- }
+ if (XFS_IFORK_NEXTENTS(ip, whichfork) == 0 &&
+ (whichfork == XFS_ATTR_FORK || !(iflags & BMV_IF_DELALLOC))) {
+ error = 0;
+ goto out_free_map;
}
nexleft = nex;
@@ -6023,53 +6029,61 @@ xfs_getbmap(
bmapi_flags, NULL, 0, map, &nmap,
NULL, NULL);
if (error)
- goto unlock_and_return;
+ goto out_free_map;
ASSERT(nmap <= subnex);
for (i = 0; i < nmap && nexleft && bmv->bmv_length; i++) {
- out.bmv_oflags = 0;
+ out[cur_ext].bmv_oflags = 0;
if (map[i].br_state == XFS_EXT_UNWRITTEN)
- out.bmv_oflags |= BMV_OF_PREALLOC;
+ out[cur_ext].bmv_oflags |= BMV_OF_PREALLOC;
else if (map[i].br_startblock == DELAYSTARTBLOCK)
- out.bmv_oflags |= BMV_OF_DELALLOC;
- out.bmv_offset = XFS_FSB_TO_BB(mp, map[i].br_startoff);
- out.bmv_length = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
- out.bmv_unused1 = out.bmv_unused2 = 0;
+ out[cur_ext].bmv_oflags |= BMV_OF_DELALLOC;
+ out[cur_ext].bmv_offset =
+ XFS_FSB_TO_BB(mp, map[i].br_startoff);
+ out[cur_ext].bmv_length =
+ XFS_FSB_TO_BB(mp, map[i].br_blockcount);
+ out[cur_ext].bmv_unused1 = 0;
+ out[cur_ext].bmv_unused2 = 0;
ASSERT(((iflags & BMV_IF_DELALLOC) != 0) ||
(map[i].br_startblock != DELAYSTARTBLOCK));
if (map[i].br_startblock == HOLESTARTBLOCK &&
whichfork == XFS_ATTR_FORK) {
/* came to the end of attribute fork */
- out.bmv_oflags |= BMV_OF_LAST;
- goto unlock_and_return;
- } else {
- int full = 0; /* user array is full */
-
- if (!xfs_getbmapx_fix_eof_hole(ip, &out,
- prealloced, bmvend,
- map[i].br_startblock)) {
- goto unlock_and_return;
- }
-
- /* format results & advance arg */
- error = formatter(&arg, &out, &full);
- if (error || full)
- goto unlock_and_return;
- nexleft--;
- bmv->bmv_offset =
- out.bmv_offset + out.bmv_length;
- bmv->bmv_length = MAX((__int64_t)0,
- (__int64_t)(bmvend - bmv->bmv_offset));
- bmv->bmv_entries++;
+ out[cur_ext].bmv_oflags |= BMV_OF_LAST;
+ goto out_free_map;
}
+
+ if (!xfs_getbmapx_fix_eof_hole(ip, &out[cur_ext],
+ prealloced, bmvend,
+ map[i].br_startblock))
+ goto out_free_map;
+
+ nexleft--;
+ bmv->bmv_offset =
+ out[cur_ext].bmv_offset +
+ out[cur_ext].bmv_length;
+ bmv->bmv_length =
+ max_t(__int64_t, 0, bmvend - bmv->bmv_offset);
+ bmv->bmv_entries++;
+ cur_ext++;
}
} while (nmap && nexleft && bmv->bmv_length);
-unlock_and_return:
+ out_free_map:
+ kmem_free(map);
+ out_unlock_ilock:
xfs_iunlock_map_shared(ip, lock);
+ out_unlock_iolock:
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
- kmem_free(map);
+ for (i = 0; i < cur_ext; i++) {
+ int full = 0; /* user array is full */
+
+ /* format results & advance arg */
+ error = formatter(&arg, &out[i], &full);
+ if (error || full)
+ break;
+ }
return error;
}
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index e7ae08d1df4..123b20c8cbf 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1258,8 +1258,10 @@ xfs_file_last_byte(
* necessary.
*/
if (ip->i_df.if_flags & XFS_IFEXTENTS) {
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
error = xfs_bmap_last_offset(NULL, ip, &last_block,
XFS_DATA_FORK);
+ xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (error) {
last_block = 0;
}
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index b101990df02..65a99725d0c 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -291,14 +291,17 @@ xfs_mount_validate_sb(
sbp->sb_sectsize > XFS_MAX_SECTORSIZE ||
sbp->sb_sectlog < XFS_MIN_SECTORSIZE_LOG ||
sbp->sb_sectlog > XFS_MAX_SECTORSIZE_LOG ||
+ sbp->sb_sectsize != (1 << sbp->sb_sectlog) ||
sbp->sb_blocksize < XFS_MIN_BLOCKSIZE ||
sbp->sb_blocksize > XFS_MAX_BLOCKSIZE ||
sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG ||
sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG ||
+ sbp->sb_blocksize != (1 << sbp->sb_blocklog) ||
sbp->sb_inodesize < XFS_DINODE_MIN_SIZE ||
sbp->sb_inodesize > XFS_DINODE_MAX_SIZE ||
sbp->sb_inodelog < XFS_DINODE_MIN_LOG ||
sbp->sb_inodelog > XFS_DINODE_MAX_LOG ||
+ sbp->sb_inodesize != (1 << sbp->sb_inodelog) ||
(sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) ||
(sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) ||
(sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) ||
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-12 11:23:42 +0000