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-rw-r--r--fs/btrfs/file-item.c2
-rw-r--r--fs/ceph/caps.c2
-rw-r--r--fs/notify/fsnotify.c36
-rw-r--r--fs/notify/fsnotify.h4
-rw-r--r--fs/notify/inode_mark.c8
-rw-r--r--fs/notify/mark.c36
-rw-r--r--fs/notify/vfsmount_mark.c8
-rw-r--r--fs/ocfs2/cluster/tcp.c2
-rw-r--r--fs/overlayfs/readdir.c2
-rw-r--r--fs/xfs/xfs_bmap_util.c72
-rw-r--r--fs/xfs/xfs_itable.c250
-rw-r--r--fs/xfs/xfs_itable.h16
12 files changed, 213 insertions, 225 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 783a943..84a2d18 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -413,7 +413,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
ret = 0;
fail:
while (ret < 0 && !list_empty(&tmplist)) {
- sums = list_entry(&tmplist, struct btrfs_ordered_sum, list);
+ sums = list_entry(tmplist.next, struct btrfs_ordered_sum, list);
list_del(&sums->list);
kfree(sums);
}
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 659f2ea..cefca66 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2638,7 +2638,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
for (i = 0; i < CEPH_CAP_BITS; i++)
if ((dirty & (1 << i)) &&
- flush_tid == ci->i_cap_flush_tid[i])
+ (u16)flush_tid == ci->i_cap_flush_tid[i])
cleaned |= 1 << i;
dout("handle_cap_flush_ack inode %p mds%d seq %d on %s cleaned %s,"
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 9d3e9c5..89326ac 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -229,8 +229,16 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
&fsnotify_mark_srcu);
}
+ /*
+ * We need to merge inode & vfsmount mark lists so that inode mark
+ * ignore masks are properly reflected for mount mark notifications.
+ * That's why this traversal is so complicated...
+ */
while (inode_node || vfsmount_node) {
- inode_group = vfsmount_group = NULL;
+ inode_group = NULL;
+ inode_mark = NULL;
+ vfsmount_group = NULL;
+ vfsmount_mark = NULL;
if (inode_node) {
inode_mark = hlist_entry(srcu_dereference(inode_node, &fsnotify_mark_srcu),
@@ -244,21 +252,19 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
vfsmount_group = vfsmount_mark->group;
}
- if (inode_group > vfsmount_group) {
- /* handle inode */
- ret = send_to_group(to_tell, inode_mark, NULL, mask,
- data, data_is, cookie, file_name);
- /* we didn't use the vfsmount_mark */
- vfsmount_group = NULL;
- } else if (vfsmount_group > inode_group) {
- ret = send_to_group(to_tell, NULL, vfsmount_mark, mask,
- data, data_is, cookie, file_name);
- inode_group = NULL;
- } else {
- ret = send_to_group(to_tell, inode_mark, vfsmount_mark,
- mask, data, data_is, cookie,
- file_name);
+ if (inode_group && vfsmount_group) {
+ int cmp = fsnotify_compare_groups(inode_group,
+ vfsmount_group);
+ if (cmp > 0) {
+ inode_group = NULL;
+ inode_mark = NULL;
+ } else if (cmp < 0) {
+ vfsmount_group = NULL;
+ vfsmount_mark = NULL;
+ }
}
+ ret = send_to_group(to_tell, inode_mark, vfsmount_mark, mask,
+ data, data_is, cookie, file_name);
if (ret && (mask & ALL_FSNOTIFY_PERM_EVENTS))
goto out;
diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h
index 9c0898c..3b68b0a 100644
--- a/fs/notify/fsnotify.h
+++ b/fs/notify/fsnotify.h
@@ -12,6 +12,10 @@ extern void fsnotify_flush_notify(struct fsnotify_group *group);
/* protects reads of inode and vfsmount marks list */
extern struct srcu_struct fsnotify_mark_srcu;
+/* compare two groups for sorting of marks lists */
+extern int fsnotify_compare_groups(struct fsnotify_group *a,
+ struct fsnotify_group *b);
+
extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
__u32 mask);
/* add a mark to an inode */
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index e849714..dfbf544 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -194,6 +194,7 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
{
struct fsnotify_mark *lmark, *last = NULL;
int ret = 0;
+ int cmp;
mark->flags |= FSNOTIFY_MARK_FLAG_INODE;
@@ -219,11 +220,8 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
goto out;
}
- if (mark->group->priority < lmark->group->priority)
- continue;
-
- if ((mark->group->priority == lmark->group->priority) &&
- (mark->group < lmark->group))
+ cmp = fsnotify_compare_groups(lmark->group, mark->group);
+ if (cmp < 0)
continue;
hlist_add_before_rcu(&mark->i.i_list, &lmark->i.i_list);
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index d90deaa..34c38fa 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -210,6 +210,42 @@ void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mas
}
/*
+ * Sorting function for lists of fsnotify marks.
+ *
+ * Fanotify supports different notification classes (reflected as priority of
+ * notification group). Events shall be passed to notification groups in
+ * decreasing priority order. To achieve this marks in notification lists for
+ * inodes and vfsmounts are sorted so that priorities of corresponding groups
+ * are descending.
+ *
+ * Furthermore correct handling of the ignore mask requires processing inode
+ * and vfsmount marks of each group together. Using the group address as
+ * further sort criterion provides a unique sorting order and thus we can
+ * merge inode and vfsmount lists of marks in linear time and find groups
+ * present in both lists.
+ *
+ * A return value of 1 signifies that b has priority over a.
+ * A return value of 0 signifies that the two marks have to be handled together.
+ * A return value of -1 signifies that a has priority over b.
+ */
+int fsnotify_compare_groups(struct fsnotify_group *a, struct fsnotify_group *b)
+{
+ if (a == b)
+ return 0;
+ if (!a)
+ return 1;
+ if (!b)
+ return -1;
+ if (a->priority < b->priority)
+ return 1;
+ if (a->priority > b->priority)
+ return -1;
+ if (a < b)
+ return 1;
+ return -1;
+}
+
+/*
* Attach an initialized mark to a given group and fs object.
* These marks may be used for the fsnotify backend to determine which
* event types should be delivered to which group.
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
index ac851e8..faefa72 100644
--- a/fs/notify/vfsmount_mark.c
+++ b/fs/notify/vfsmount_mark.c
@@ -153,6 +153,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
struct mount *m = real_mount(mnt);
struct fsnotify_mark *lmark, *last = NULL;
int ret = 0;
+ int cmp;
mark->flags |= FSNOTIFY_MARK_FLAG_VFSMOUNT;
@@ -178,11 +179,8 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
goto out;
}
- if (mark->group->priority < lmark->group->priority)
- continue;
-
- if ((mark->group->priority == lmark->group->priority) &&
- (mark->group < lmark->group))
+ cmp = fsnotify_compare_groups(lmark->group, mark->group);
+ if (cmp < 0)
continue;
hlist_add_before_rcu(&mark->m.m_list, &lmark->m.m_list);
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 97de0fb..a960440 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -925,7 +925,7 @@ static int o2net_send_tcp_msg(struct socket *sock, struct kvec *vec,
size_t veclen, size_t total)
{
int ret;
- struct msghdr msg;
+ struct msghdr msg = {.msg_flags = 0,};
if (sock == NULL) {
ret = -EINVAL;
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index 4e9d7c1..2a7ef4f 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -168,7 +168,7 @@ static void ovl_cache_put(struct ovl_dir_file *od, struct dentry *dentry)
{
struct ovl_dir_cache *cache = od->cache;
- list_del(&od->cursor.l_node);
+ list_del_init(&od->cursor.l_node);
WARN_ON(cache->refcount <= 0);
cache->refcount--;
if (!cache->refcount) {
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 92e8f99..2810026 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1338,7 +1338,10 @@ xfs_free_file_space(
goto out;
}
-
+/*
+ * Preallocate and zero a range of a file. This mechanism has the allocation
+ * semantics of fallocate and in addition converts data in the range to zeroes.
+ */
int
xfs_zero_file_space(
struct xfs_inode *ip,
@@ -1346,65 +1349,30 @@ xfs_zero_file_space(
xfs_off_t len)
{
struct xfs_mount *mp = ip->i_mount;
- uint granularity;
- xfs_off_t start_boundary;
- xfs_off_t end_boundary;
+ uint blksize;
int error;
trace_xfs_zero_file_space(ip);
- granularity = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
+ blksize = 1 << mp->m_sb.sb_blocklog;
/*
- * Round the range of extents we are going to convert inwards. If the
- * offset is aligned, then it doesn't get changed so we zero from the
- * start of the block offset points to.
+ * Punch a hole and prealloc the range. We use hole punch rather than
+ * unwritten extent conversion for two reasons:
+ *
+ * 1.) Hole punch handles partial block zeroing for us.
+ *
+ * 2.) If prealloc returns ENOSPC, the file range is still zero-valued
+ * by virtue of the hole punch.
*/
- start_boundary = round_up(offset, granularity);
- end_boundary = round_down(offset + len, granularity);
-
- ASSERT(start_boundary >= offset);
- ASSERT(end_boundary <= offset + len);
-
- if (start_boundary < end_boundary - 1) {
- /*
- * Writeback the range to ensure any inode size updates due to
- * appending writes make it to disk (otherwise we could just
- * punch out the delalloc blocks).
- */
- error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
- start_boundary, end_boundary - 1);
- if (error)
- goto out;
- truncate_pagecache_range(VFS_I(ip), start_boundary,
- end_boundary - 1);
-
- /* convert the blocks */
- error = xfs_alloc_file_space(ip, start_boundary,
- end_boundary - start_boundary - 1,
- XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT);
- if (error)
- goto out;
-
- /* We've handled the interior of the range, now for the edges */
- if (start_boundary != offset) {
- error = xfs_iozero(ip, offset, start_boundary - offset);
- if (error)
- goto out;
- }
-
- if (end_boundary != offset + len)
- error = xfs_iozero(ip, end_boundary,
- offset + len - end_boundary);
-
- } else {
- /*
- * It's either a sub-granularity range or the range spanned lies
- * partially across two adjacent blocks.
- */
- error = xfs_iozero(ip, offset, len);
- }
+ error = xfs_free_file_space(ip, offset, len);
+ if (error)
+ goto out;
+ error = xfs_alloc_file_space(ip, round_down(offset, blksize),
+ round_up(offset + len, blksize) -
+ round_down(offset, blksize),
+ XFS_BMAPI_PREALLOC);
out:
return error;
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index f1deb96..894924a 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -236,8 +236,10 @@ xfs_bulkstat_grab_ichunk(
XFS_WANT_CORRUPTED_RETURN(stat == 1);
/* Check if the record contains the inode in request */
- if (irec->ir_startino + XFS_INODES_PER_CHUNK <= agino)
- return -EINVAL;
+ if (irec->ir_startino + XFS_INODES_PER_CHUNK <= agino) {
+ *icount = 0;
+ return 0;
+ }
idx = agino - irec->ir_startino + 1;
if (idx < XFS_INODES_PER_CHUNK &&
@@ -262,75 +264,76 @@ xfs_bulkstat_grab_ichunk(
#define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
+struct xfs_bulkstat_agichunk {
+ char __user **ac_ubuffer;/* pointer into user's buffer */
+ int ac_ubleft; /* bytes left in user's buffer */
+ int ac_ubelem; /* spaces used in user's buffer */
+};
+
/*
* Process inodes in chunk with a pointer to a formatter function
* that will iget the inode and fill in the appropriate structure.
*/
-int
+static int
xfs_bulkstat_ag_ichunk(
struct xfs_mount *mp,
xfs_agnumber_t agno,
struct xfs_inobt_rec_incore *irbp,
bulkstat_one_pf formatter,
size_t statstruct_size,
- struct xfs_bulkstat_agichunk *acp)
+ struct xfs_bulkstat_agichunk *acp,
+ xfs_agino_t *last_agino)
{
- xfs_ino_t lastino = acp->ac_lastino;
char __user **ubufp = acp->ac_ubuffer;
- int ubleft = acp->ac_ubleft;
- int ubelem = acp->ac_ubelem;
- int chunkidx, clustidx;
+ int chunkidx;
int error = 0;
- xfs_agino_t agino;
+ xfs_agino_t agino = irbp->ir_startino;
- for (agino = irbp->ir_startino, chunkidx = clustidx = 0;
- XFS_BULKSTAT_UBLEFT(ubleft) &&
- irbp->ir_freecount < XFS_INODES_PER_CHUNK;
- chunkidx++, clustidx++, agino++) {
- int fmterror; /* bulkstat formatter result */
+ for (chunkidx = 0; chunkidx < XFS_INODES_PER_CHUNK;
+ chunkidx++, agino++) {
+ int fmterror;
int ubused;
- xfs_ino_t ino = XFS_AGINO_TO_INO(mp, agno, agino);
- ASSERT(chunkidx < XFS_INODES_PER_CHUNK);
+ /* inode won't fit in buffer, we are done */
+ if (acp->ac_ubleft < statstruct_size)
+ break;
/* Skip if this inode is free */
- if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) {
- lastino = ino;
+ if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free)
continue;
- }
-
- /*
- * Count used inodes as free so we can tell when the
- * chunk is used up.
- */
- irbp->ir_freecount++;
/* Get the inode and fill in a single buffer */
ubused = statstruct_size;
- error = formatter(mp, ino, *ubufp, ubleft, &ubused, &fmterror);
- if (fmterror == BULKSTAT_RV_NOTHING) {
- if (error && error != -ENOENT && error != -EINVAL) {
- ubleft = 0;
- break;
- }
- lastino = ino;
- continue;
- }
- if (fmterror == BULKSTAT_RV_GIVEUP) {
- ubleft = 0;
+ error = formatter(mp, XFS_AGINO_TO_INO(mp, agno, agino),
+ *ubufp, acp->ac_ubleft, &ubused, &fmterror);
+
+ if (fmterror == BULKSTAT_RV_GIVEUP ||
+ (error && error != -ENOENT && error != -EINVAL)) {
+ acp->ac_ubleft = 0;
ASSERT(error);
break;
}
- if (*ubufp)
- *ubufp += ubused;
- ubleft -= ubused;
- ubelem++;
- lastino = ino;
+
+ /* be careful not to leak error if at end of chunk */
+ if (fmterror == BULKSTAT_RV_NOTHING || error) {
+ error = 0;
+ continue;
+ }
+
+ *ubufp += ubused;
+ acp->ac_ubleft -= ubused;
+ acp->ac_ubelem++;
}
- acp->ac_lastino = lastino;
- acp->ac_ubleft = ubleft;
- acp->ac_ubelem = ubelem;
+ /*
+ * Post-update *last_agino. At this point, agino will always point one
+ * inode past the last inode we processed successfully. Hence we
+ * substract that inode when setting the *last_agino cursor so that we
+ * return the correct cookie to userspace. On the next bulkstat call,
+ * the inode under the lastino cookie will be skipped as we have already
+ * processed it here.
+ */
+ *last_agino = agino - 1;
return error;
}
@@ -353,45 +356,33 @@ xfs_bulkstat(
xfs_agino_t agino; /* inode # in allocation group */
xfs_agnumber_t agno; /* allocation group number */
xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */
- int end_of_ag; /* set if we've seen the ag end */
- int error; /* error code */
- int fmterror;/* bulkstat formatter result */
- int i; /* loop index */
- int icount; /* count of inodes good in irbuf */
size_t irbsize; /* size of irec buffer in bytes */
- xfs_ino_t ino; /* inode number (filesystem) */
- xfs_inobt_rec_incore_t *irbp; /* current irec buffer pointer */
xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */
- xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */
- xfs_ino_t lastino; /* last inode number returned */
int nirbuf; /* size of irbuf */
- int rval; /* return value error code */
- int tmp; /* result value from btree calls */
int ubcount; /* size of user's buffer */
- int ubleft; /* bytes left in user's buffer */
- char __user *ubufp; /* pointer into user's buffer */
- int ubelem; /* spaces used in user's buffer */
+ struct xfs_bulkstat_agichunk ac;
+ int error = 0;
/*
* Get the last inode value, see if there's nothing to do.
*/
- ino = (xfs_ino_t)*lastinop;
- lastino = ino;
- agno = XFS_INO_TO_AGNO(mp, ino);
- agino = XFS_INO_TO_AGINO(mp, ino);
+ agno = XFS_INO_TO_AGNO(mp, *lastinop);
+ agino = XFS_INO_TO_AGINO(mp, *lastinop);
if (agno >= mp->m_sb.sb_agcount ||
- ino != XFS_AGINO_TO_INO(mp, agno, agino)) {
+ *lastinop != XFS_AGINO_TO_INO(mp, agno, agino)) {
*done = 1;
*ubcountp = 0;
return 0;
}
ubcount = *ubcountp; /* statstruct's */
- ubleft = ubcount * statstruct_size; /* bytes */
- *ubcountp = ubelem = 0;
+ ac.ac_ubuffer = &ubuffer;
+ ac.ac_ubleft = ubcount * statstruct_size; /* bytes */;
+ ac.ac_ubelem = 0;
+
+ *ubcountp = 0;
*done = 0;
- fmterror = 0;
- ubufp = ubuffer;
+
irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
if (!irbuf)
return -ENOMEM;
@@ -402,9 +393,13 @@ xfs_bulkstat(
* Loop over the allocation groups, starting from the last
* inode returned; 0 means start of the allocation group.
*/
- rval = 0;
- while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
- cond_resched();
+ while (agno < mp->m_sb.sb_agcount) {
+ struct xfs_inobt_rec_incore *irbp = irbuf;
+ struct xfs_inobt_rec_incore *irbufend = irbuf + nirbuf;
+ bool end_of_ag = false;
+ int icount = 0;
+ int stat;
+
error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
if (error)
break;
@@ -414,10 +409,6 @@ xfs_bulkstat(
*/
cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno,
XFS_BTNUM_INO);
- irbp = irbuf;
- irbufend = irbuf + nirbuf;
- end_of_ag = 0;
- icount = 0;
if (agino > 0) {
/*
* In the middle of an allocation group, we need to get
@@ -427,22 +418,23 @@ xfs_bulkstat(
error = xfs_bulkstat_grab_ichunk(cur, agino, &icount, &r);
if (error)
- break;
+ goto del_cursor;
if (icount) {
irbp->ir_startino = r.ir_startino;
irbp->ir_freecount = r.ir_freecount;
irbp->ir_free = r.ir_free;
irbp++;
- agino = r.ir_startino + XFS_INODES_PER_CHUNK;
}
/* Increment to the next record */
- error = xfs_btree_increment(cur, 0, &tmp);
+ error = xfs_btree_increment(cur, 0, &stat);
} else {
/* Start of ag. Lookup the first inode chunk */
- error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp);
+ error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &stat);
+ }
+ if (error || stat == 0) {
+ end_of_ag = true;
+ goto del_cursor;
}
- if (error)
- break;
/*
* Loop through inode btree records in this ag,
@@ -451,10 +443,10 @@ xfs_bulkstat(
while (irbp < irbufend && icount < ubcount) {
struct xfs_inobt_rec_incore r;
- error = xfs_inobt_get_rec(cur, &r, &i);
- if (error || i == 0) {
- end_of_ag = 1;
- break;
+ error = xfs_inobt_get_rec(cur, &r, &stat);
+ if (error || stat == 0) {
+ end_of_ag = true;
+ goto del_cursor;
}
/*
@@ -469,77 +461,79 @@ xfs_bulkstat(
irbp++;
icount += XFS_INODES_PER_CHUNK - r.ir_freecount;
}
- /*
- * Set agino to after this chunk and bump the cursor.
- */
- agino = r.ir_startino + XFS_INODES_PER_CHUNK;
- error = xfs_btree_increment(cur, 0, &tmp);
+ error = xfs_btree_increment(cur, 0, &stat);
+ if (error || stat == 0) {
+ end_of_ag = true;
+ goto del_cursor;
+ }
cond_resched();
}
+
/*
- * Drop the btree buffers and the agi buffer.
- * We can't hold any of the locks these represent
- * when calling iget.
+ * Drop the btree buffers and the agi buffer as we can't hold any
+ * of the locks these represent when calling iget. If there is a
+ * pending error, then we are done.
*/
+del_cursor:
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
xfs_buf_relse(agbp);
+ if (error)
+ break;
/*
- * Now format all the good inodes into the user's buffer.
+ * Now format all the good inodes into the user's buffer. The
+ * call to xfs_bulkstat_ag_ichunk() sets up the agino pointer
+ * for the next loop iteration.
*/
irbufend = irbp;
for (irbp = irbuf;
- irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) {
- struct xfs_bulkstat_agichunk ac;
-
- ac.ac_lastino = lastino;
- ac.ac_ubuffer = &ubuffer;
- ac.ac_ubleft = ubleft;
- ac.ac_ubelem = ubelem;
+ irbp < irbufend && ac.ac_ubleft >= statstruct_size;
+ irbp++) {
error = xfs_bulkstat_ag_ichunk(mp, agno, irbp,
- formatter, statstruct_size, &ac);
+ formatter, statstruct_size, &ac,
+ &agino);
if (error)
- rval = error;
-
- lastino = ac.ac_lastino;
- ubleft = ac.ac_ubleft;
- ubelem = ac.ac_ubelem;
+ break;
cond_resched();
}
+
/*
- * Set up for the next loop iteration.
+ * If we've run out of space or had a formatting error, we
+ * are now done
*/
- if (XFS_BULKSTAT_UBLEFT(ubleft)) {
- if (end_of_ag) {
- agno++;
- agino = 0;
- } else
- agino = XFS_INO_TO_AGINO(mp, lastino);
- } else
+ if (ac.ac_ubleft < statstruct_size || error)
break;
+
+ if (end_of_ag) {
+ agno++;
+ agino = 0;
+ }
}
/*
* Done, we're either out of filesystem or space to put the data.
*/
kmem_free(irbuf);
- *ubcountp = ubelem;
+ *ubcountp = ac.ac_ubelem;
+
/*
- * Found some inodes, return them now and return the error next time.
+ * We found some inodes, so clear the error status and return them.
+ * The lastino pointer will point directly at the inode that triggered
+ * any error that occurred, so on the next call the error will be
+ * triggered again and propagated to userspace as there will be no
+ * formatted inodes in the buffer.
*/
- if (ubelem)
- rval = 0;
- if (agno >= mp->m_sb.sb_agcount) {
- /*
- * If we ran out of filesystem, mark lastino as off
- * the end of the filesystem, so the next call
- * will return immediately.
- */
- *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0);
+ if (ac.ac_ubelem)
+ error = 0;
+
+ /*
+ * If we ran out of filesystem, lastino will point off the end of
+ * the filesystem so the next call will return immediately.
+ */
+ *lastinop = XFS_AGINO_TO_INO(mp, agno, agino);
+ if (agno >= mp->m_sb.sb_agcount)
*done = 1;
- } else
- *lastinop = (xfs_ino_t)lastino;
- return rval;
+ return error;
}
int
diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h
index aaed080..6ea8b39 100644
--- a/fs/xfs/xfs_itable.h
+++ b/fs/xfs/xfs_itable.h
@@ -30,22 +30,6 @@ typedef int (*bulkstat_one_pf)(struct xfs_mount *mp,
int *ubused,
int *stat);
-struct xfs_bulkstat_agichunk {
- xfs_ino_t ac_lastino; /* last inode returned */
- char __user **ac_ubuffer;/* pointer into user's buffer */
- int ac_ubleft; /* bytes left in user's buffer */
- int ac_ubelem; /* spaces used in user's buffer */
-};
-
-int
-xfs_bulkstat_ag_ichunk(
- struct xfs_mount *mp,
- xfs_agnumber_t agno,
- struct xfs_inobt_rec_incore *irbp,
- bulkstat_one_pf formatter,
- size_t statstruct_size,
- struct xfs_bulkstat_agichunk *acp);
-
/*
* Values for stat return value.
*/
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