Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

9 files changed, 34 insertions, 31 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 3ebccf4aa7e3..897cd7477b34 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -627,8 +627,7 @@ repeat:
 }
 
 /**
- * sync_mapping_buffers - write out and wait upon a mapping's "associated"
- *                        buffers
+ * sync_mapping_buffers - write out & wait upon a mapping's "associated" buffers
  * @mapping: the mapping which wants those buffers written
  *
  * Starts I/O against the buffers at mapping->private_list, and waits upon
diff --git a/fs/exec.c b/fs/exec.c
index a44b142fb460..54a0a557b678 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -173,8 +173,15 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
                 return NULL;
 
         if (write) {
-                struct rlimit *rlim = current->signal->rlim;
                 unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
+                struct rlimit *rlim;
+
+                /*
+                 * We've historically supported up to 32 pages (ARG_MAX)
+                 * of argument strings even with small stacks
+                 */
+                if (size <= ARG_MAX)
+                        return page;
 
                 /*
                  * Limit to 1/4-th the stack size for the argv+env strings.
@@ -183,6 +190,7 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
                  *  - the program will have a reasonable amount of stack left
                  *    to work from.
                  */
+                rlim = current->signal->rlim;
                 if (size > rlim[RLIMIT_STACK].rlim_cur / 4) {
                         put_page(page);
                         return NULL;
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 038ed7436199..c6cbb6cd59b2 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -369,7 +369,7 @@ out:
 
 
 /**
- * int journal_restart() - restart a handle .
+ * int journal_restart() - restart a handle.
  * @handle:  handle to restart
  * @nblocks: nr credits requested
  *
@@ -844,8 +844,7 @@ out:
 }
 
 /**
- * int journal_get_undo_access() -  Notify intent to modify metadata with
- *     non-rewindable consequences
+ * int journal_get_undo_access() - Notify intent to modify metadata with non-rewindable consequences
  * @handle: transaction
  * @bh: buffer to undo
  * @credits: store the number of taken credits here (if not NULL)
@@ -921,12 +920,14 @@ out:
 }
 
 /**
- * int journal_dirty_data() -  mark a buffer as containing dirty data which
- *                             needs to be flushed before we can commit the
- *                             current transaction.
+ * int journal_dirty_data() - mark a buffer as containing dirty data to be flushed
  * @handle: transaction
  * @bh: bufferhead to mark
  *
+ * Description:
+ * Mark a buffer as containing dirty data which needs to be flushed before
+ * we can commit the current transaction.
+ *
  * The buffer is placed on the transaction's data list and is marked as
  * belonging to the transaction.
  *
@@ -1098,11 +1099,11 @@ no_journal:
 }
 
 /**
- * int journal_dirty_metadata() -  mark a buffer as containing dirty metadata
+ * int journal_dirty_metadata() - mark a buffer as containing dirty metadata
  * @handle: transaction to add buffer to.
  * @bh: buffer to mark
  *
- * mark dirty metadata which needs to be journaled as part of the current
+ * Mark dirty metadata which needs to be journaled as part of the current
  * transaction.
  *
  * The buffer is placed on the transaction's metadata list and is marked
diff --git a/fs/mpage.c b/fs/mpage.c
index 5df564366f36..235e4d3873a8 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -325,16 +325,12 @@ confused:
 }
 
 /**
- * mpage_readpages - populate an address space with some pages, and
- *                       start reads against them.
- *
+ * mpage_readpages - populate an address space with some pages & start reads against them
  * @mapping: the address_space
  * @pages: The address of a list_head which contains the target pages.  These
  *   pages have their ->index populated and are otherwise uninitialised.
- *
  *   The page at @pages->prev has the lowest file offset, and reads should be
  *   issued in @pages->prev to @pages->next order.
- *
  * @nr_pages: The number of pages at *@pages
  * @get_block: The filesystem's block mapper function.
  *
@@ -360,6 +356,7 @@ confused:
  * So an mpage read of the first 16 blocks of an ext2 file will cause I/O to be
  * submitted in the following order:
  *      12 0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16
+ *
  * because the indirect block has to be read to get the mappings of blocks
  * 13,14,15,16.  Obviously, this impacts performance.
  *
@@ -656,9 +653,7 @@ out:
 }
 
 /**
- * mpage_writepages - walk the list of dirty pages of the given
- * address space and writepage() all of them.
- * 
+ * mpage_writepages - walk the list of dirty pages of the given address space & writepage() all of them
  * @mapping: address space structure to write
  * @wbc: subtract the number of written pages from *@wbc->nr_to_write
  * @get_block: the filesystem's block mapper function.
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 21dfc9da235e..8831d9518790 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -171,7 +171,7 @@ xfs_parseargs(
         char                    *this_char, *value, *eov;
         int                     dsunit, dswidth, vol_dsunit, vol_dswidth;
         int                     iosize;
-        int                     ikeep = 0;
+        int                     dmapi_implies_ikeep = 1;
 
         args->flags |= XFSMNT_BARRIER;
         args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
@@ -302,10 +302,10 @@ xfs_parseargs(
                 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
                         args->flags &= ~XFSMNT_BARRIER;
                 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
-                        ikeep = 1;
-                        args->flags &= ~XFSMNT_IDELETE;
+                        args->flags |= XFSMNT_IKEEP;
                 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
-                        args->flags |= XFSMNT_IDELETE;
+                        dmapi_implies_ikeep = 0;
+                        args->flags &= ~XFSMNT_IKEEP;
                 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
                         args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
                 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
@@ -410,8 +410,8 @@ xfs_parseargs(
          * Note that if "ikeep" or "noikeep" mount options are
          * supplied, then they are honored.
          */
-        if (!(args->flags & XFSMNT_DMAPI) && !ikeep)
-                args->flags |= XFSMNT_IDELETE;
+        if ((args->flags & XFSMNT_DMAPI) && dmapi_implies_ikeep)
+                args->flags |= XFSMNT_IKEEP;
 
         if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
                 if (dsunit) {
@@ -446,6 +446,7 @@ xfs_showargs(
 {
         static struct proc_xfs_info xfs_info_set[] = {
                 /* the few simple ones we can get from the mount struct */
+                { XFS_MOUNT_IKEEP,              "," MNTOPT_IKEEP },
                 { XFS_MOUNT_WSYNC,              "," MNTOPT_WSYNC },
                 { XFS_MOUNT_INO64,              "," MNTOPT_INO64 },
                 { XFS_MOUNT_NOALIGN,            "," MNTOPT_NOALIGN },
@@ -461,7 +462,6 @@ xfs_showargs(
         };
         static struct proc_xfs_info xfs_info_unset[] = {
                 /* the few simple ones we can get from the mount struct */
-                { XFS_MOUNT_IDELETE,            "," MNTOPT_IKEEP },
                 { XFS_MOUNT_COMPAT_IOSIZE,      "," MNTOPT_LARGEIO },
                 { XFS_MOUNT_BARRIER,            "," MNTOPT_NOBARRIER },
                 { XFS_MOUNT_SMALL_INUMS,        "," MNTOPT_64BITINODE },
diff --git a/fs/xfs/xfs_clnt.h b/fs/xfs/xfs_clnt.h
index d16c1b971074..d5d1e60ee224 100644
--- a/fs/xfs/xfs_clnt.h
+++ b/fs/xfs/xfs_clnt.h
@@ -86,7 +86,7 @@ struct xfs_mount_args {
 #define XFSMNT_NOUUID           0x01000000      /* Ignore fs uuid */
 #define XFSMNT_DMAPI            0x02000000      /* enable dmapi/xdsm */
 #define XFSMNT_BARRIER          0x04000000      /* use write barriers */
-#define XFSMNT_IDELETE          0x08000000      /* inode cluster delete */
+#define XFSMNT_IKEEP            0x08000000      /* inode cluster delete */
 #define XFSMNT_SWALLOC          0x10000000      /* turn on stripe width
                                                  * allocation */
 #define XFSMNT_DIRSYNC          0x40000000      /* sync creat,link,unlink,rename
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index c5836b951d0c..db9d5fa600af 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -1053,7 +1053,7 @@ xfs_difree(
         /*
          * When an inode cluster is free, it becomes eligible for removal
          */
-        if ((mp->m_flags & XFS_MOUNT_IDELETE) &&
+        if (!(mp->m_flags & XFS_MOUNT_IKEEP) &&
             (rec.ir_freecount == XFS_IALLOC_INODES(mp))) {
 
                 *delete = 1;
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index f7c620ec6e69..1d8a4728d847 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -366,7 +366,7 @@ typedef struct xfs_mount {
 #define XFS_MOUNT_SMALL_INUMS   (1ULL << 15)    /* users wants 32bit inodes */
 #define XFS_MOUNT_NOUUID        (1ULL << 16)    /* ignore uuid during mount */
 #define XFS_MOUNT_BARRIER       (1ULL << 17)
-#define XFS_MOUNT_IDELETE       (1ULL << 18)    /* delete empty inode clusters*/
+#define XFS_MOUNT_IKEEP         (1ULL << 18)    /* keep empty inode clusters*/
 #define XFS_MOUNT_SWALLOC       (1ULL << 19)    /* turn on stripe width
                                                  * allocation */
 #define XFS_MOUNT_RDONLY        (1ULL << 20)    /* read-only fs */
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 413587f02155..7321304a69cc 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -281,8 +281,8 @@ xfs_start_flags(
                 mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
         }
 
-        if (ap->flags & XFSMNT_IDELETE)
-                mp->m_flags |= XFS_MOUNT_IDELETE;
+        if (ap->flags & XFSMNT_IKEEP)
+                mp->m_flags |= XFS_MOUNT_IKEEP;
         if (ap->flags & XFSMNT_DIRSYNC)
                 mp->m_flags |= XFS_MOUNT_DIRSYNC;
         if (ap->flags & XFSMNT_ATTR2)