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hg: acquire wlock while updating the working directory via updatetotally...

hg: acquire wlock while updating the working directory via updatetotally updatetotally() might be invoked outside wlock scope (e.g. invocation via postincoming() at "hg unbundle" or "hg pull"). In such case, acquisition of wlock is needed for consistent view, because parallel "hg update" and/or "hg bookmarks" might change working directory status while executing updatetotally(). Strictly speaking, truly consistent updating should acquire also store lock, because active bookmark might be moved to another one outside wlock scope (e.g. pulling from other repository causes updating current active one). Acquisition of wlock in this patch ensures consistency in as same level as past "hg update".

Matt Mackall - - Load All Authors

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      https://bz.mercurial-scm.org/660 and:

      https://bz.mercurial-scm.org/322

        $ hg init

        $ echo a > a

        $ mkdir b

        $ echo b > b/b

        $ hg commit -A -m "a is file, b is dir"

        adding a

        adding b/b

      File replaced with directory:

        $ rm a

        $ mkdir a

        $ echo a > a/a

      Should fail - would corrupt dirstate:

        $ hg add a/a

        abort: file 'a' in dirstate clashes with 'a/a'

        [255]

      Removing shadow:

        $ hg rm --after a

      Should succeed - shadow removed:

        $ hg add a/a

      Directory replaced with file:

        $ rm -r b

        $ echo b > b

      Should fail - would corrupt dirstate:

        $ hg add b

        abort: directory 'b' already in dirstate

        [255]

      Removing shadow:

        $ hg rm --after b/b

      Should succeed - shadow removed:

        $ hg add b

      Look what we got:

        $ hg st

        A a/a

        A b

        R a

        R b/b

      Revert reintroducing shadow - should fail:

        $ rm -r a b

        $ hg revert b/b

        abort: file 'b' in dirstate clashes with 'b/b'

        [255]

      Revert all - should succeed:

        $ hg revert --all

        undeleting a

        forgetting a/a (glob)

        forgetting b

        undeleting b/b (glob)

        $ hg st

      Issue3423:

        $ hg forget a

        $ echo zed > a

        $ hg revert a

        $ hg st

        ? a.orig

        $ rm a.orig

      addremove:

        $ rm -r a b

        $ mkdir a

        $ echo a > a/a

        $ echo b > b

        $ hg addremove -s 0

        removing a

        adding a/a

        adding b

        removing b/b

        $ hg st

        A a/a

        A b

        R a

        R b/b

      commit:

        $ hg ci -A -m "a is dir, b is file"

        $ hg st --all

        C a/a

        C b

      Long directory replaced with file:

        $ mkdir d

        $ mkdir d/d

        $ echo d > d/d/d

        $ hg commit -A -m "d is long directory"

        adding d/d/d

        $ rm -r d

        $ echo d > d

      Should fail - would corrupt dirstate:

        $ hg add d

        abort: directory 'd' already in dirstate

        [255]

      Removing shadow:

        $ hg rm --after d/d/d

      Should succeed - shadow removed:

        $ hg add d

        $ hg ci -md

      Update should work at least with clean working directory:

        $ rm -r a b d

        $ hg up -r 0

        2 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg st --all

        C a

        C b/b

        $ rm -r a b

        $ hg up -r 1

        2 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg st --all

        C a/a

        C b

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				https://bz.mercurial-scm.org/660 and:
				https://bz.mercurial-scm.org/322

				$ hg init
				$ echo a > a
				$ mkdir b
				$ echo b > b/b
				$ hg commit -A -m "a is file, b is dir"
				adding a
				adding b/b

				File replaced with directory:

				$ rm a
				$ mkdir a
				$ echo a > a/a

				Should fail - would corrupt dirstate:

				$ hg add a/a
				abort: file 'a' in dirstate clashes with 'a/a'
				[255]

				Removing shadow:

				$ hg rm --after a

				Should succeed - shadow removed:

				$ hg add a/a

				Directory replaced with file:

				$ rm -r b
				$ echo b > b

				Should fail - would corrupt dirstate:

				$ hg add b
				abort: directory 'b' already in dirstate
				[255]

				Removing shadow:

				$ hg rm --after b/b

				Should succeed - shadow removed:

				$ hg add b

				Look what we got:

				$ hg st
				A a/a
				A b
				R a
				R b/b

				Revert reintroducing shadow - should fail:

				$ rm -r a b
				$ hg revert b/b
				abort: file 'b' in dirstate clashes with 'b/b'
				[255]

				Revert all - should succeed:

				$ hg revert --all
				undeleting a
				forgetting a/a (glob)
				forgetting b
				undeleting b/b (glob)

				$ hg st

				Issue3423:

				$ hg forget a
				$ echo zed > a
				$ hg revert a
				$ hg st
				? a.orig
				$ rm a.orig

				addremove:

				$ rm -r a b
				$ mkdir a
				$ echo a > a/a
				$ echo b > b

				$ hg addremove -s 0
				removing a
				adding a/a
				adding b
				removing b/b

				$ hg st
				A a/a
				A b
				R a
				R b/b

				commit:

				$ hg ci -A -m "a is dir, b is file"
				$ hg st --all
				C a/a
				C b

				Long directory replaced with file:

				$ mkdir d
				$ mkdir d/d
				$ echo d > d/d/d
				$ hg commit -A -m "d is long directory"
				adding d/d/d

				$ rm -r d
				$ echo d > d

				Should fail - would corrupt dirstate:

				$ hg add d
				abort: directory 'd' already in dirstate
				[255]

				Removing shadow:

				$ hg rm --after d/d/d

				Should succeed - shadow removed:

				$ hg add d
				$ hg ci -md

				Update should work at least with clean working directory:

				$ rm -r a b d
				$ hg up -r 0
				2 files updated, 0 files merged, 0 files removed, 0 files unresolved

				$ hg st --all
				C a
				C b/b

				$ rm -r a b
				$ hg up -r 1
				2 files updated, 0 files merged, 0 files removed, 0 files unresolved

				$ hg st --all
				C a/a
				C b